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Interrupt List, part 2 of 12
This compilation is Copyright (c) 1989,1990,1991,1992,1993,1994,1995 Ralf Brown
--------c-1340-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET "sticky_max"
AH = 40h
AL = new value for "sticky_max"
Return: AX = status (0000h successful)
SeeAlso: AH=41h"QUICKCACHE"
--------d-1341--BX55AA-----------------------
INT 13 - IBM/MS INT 13 Extensions - INSTALLATION CHECK
AH = 41h
BX = 55AAh
DL = drive (80h-FFh)
Return: CF set on error (not supported)
AH = 01h (invalid function)
CF clear if successful
BX = AA55h if installed
AH = major version of extensions (01h = 1.x, 20h = 2.0)
AL = internal use
CX = API subset support bitmap (see #0177)
DH = extension version (v2.0+ ??? -- not present in 1.x)
Note: the Phoenix Enhanced Disk Drive Specification v1.0 uses version 2.0 of
the INT 13 Extensions API
SeeAlso: AH=42h"INT 13 Ext",AH=48h"INT 13 Ext"

Bitfields for IBM/MS INT 13 Extensions API support bitmap:
Bit(s) Description (Table 0177)
0 extended disk access functions (AH=42h-44h,47h,48h) supported
1 removable drive controller functions (AH=45h,46h,48h,49h,INT 15/AH=52h)
supported
2 extended drive parameter table is valid (see #0179,#0182)
3-15 reserved (0)
--------c-1341-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SAVE/RESTORE ???
AH = 41h
AL = direction
01h save to file
else restore from file
ES:DI -> 1024-byte buffer for ???
Return: AX = status (0000h successful, 8000h failed)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
Associates, Inc.
SeeAlso: AH=40h"QUICKCACHE"
--------d-1342-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED READ
AH = 42h
DL = drive number
DS:SI -> disk address packet (see #0178)
Return: CF clear if successful
AH = 00h
CF set on error
AH = error code (see #0140)
disk address packet's block count field set to number of blocks
successfully transferred
SeeAlso: AH=41h"INT 13 Ext",AH=43h"INT 13 Ext"

Format of disk address packet:
Offset Size Description (Table 0178)
00h BYTE 10h (size of packet)
01h BYTE reserved (0)
02h WORD number of blocks to transfer
04h DWORD -> transfer buffer
08h QWORD starting absolute block number
--------N-134257DX1234-----------------------
INT 13 U - Beame&Whiteside BWLPD - INSTALLATION CHECK
AX = 4257h ("BW")
DX = 1234h
Return: BX = 414Ch if installed
Program: BWLPD is the printer daemon from the BW-NFS package
SeeAlso: INT 62/AH=00h"ETHDEV"
--------d-1343-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED WRITE
AH = 43h
AL = write flags
bit 0: verify write
bits 7-1 reserved (0)
DL = drive number
DS:SI -> disk address packet (see #0178)
Return: CF clear if successful
AH = 00h
CF set on error
AH = error code (see #0140)
disk address packet's block count field set to number of blocks
successfully transferred
Note: the BIOS returns CF set/AH=01h (invalid function) if verify is
requested but not supported
SeeAlso: AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=44h
--------d-1344-------------------------------
INT 13 - IBM/MS INT 13 Extensions - VERIFY SECTORS
AH = 44h
DL = drive number
DS:SI -> disk address packet (see #0178)
Return: CF clear if successful
AH = 00h
CF set on error
AH = error code (see #0140)
disk address packet's block count field set to number of blocks
successfully verified
SeeAlso: AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=47h
--------d-1345-------------------------------
INT 13 - IBM/MS INT 13 Extensions - LOCK/UNLOCK DRIVE
AH = 45h
AL = operation
00h lock media in drive
01h unlock media
02h check lock status
DL = drive number
Return: CF clear if successful
AH = 00h
AL = lock state (00h = unlocked)
CF set on error
AH = error code (see #0140)
Notes: this function is required to be supported for any removable drives
numbered 80h or higher
up to 255 locks may be placed on a drive, and the media will not
be physically unlocked until all locks have been removed
SeeAlso: AH=41h"INT 13 Ext",AH=46h,AH=49h,INT 15/AH=52h"Phoenix"
----------1346-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EJECT MEDIA
AH = 46h
AL = 00h (reserved)
DL = drive number
Return: CF clear if successful
AH = 00h
CF set on error
AH = error code (see #0140)
SeeAlso: AH=49h,INT 15/AH=52h"Phoenix"
----------1347-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED SEEK
AH = 47h
DL = drive number
DS:SI -> disk address packet (see #0178)
Return: CF clear if successful
AH = 00h
CF set on error
AH = error code (see #0140)
SeeAlso: AH=0Ch,AH=42h"INT 13 Ext"
--------d-1348-------------------------------
INT 13 - IBM/MS INT 13 Extensions - GET DRIVE PARAMETERS
AH = 48h
DL = drive (80h-FFh)
DS:SI -> buffer for drive parameters (see #0179)
Return: CF clear if successful
DS:SI buffer filled
CF set on error
AH = error code (see #0140)
SeeAlso: AH=08h,AH=41h,AH=49h

Format of IBM/MS INT 13 Extensions drive parameters:
Offset Size Description (Table 0179)
00h WORD (call) size of buffer (001Ah for v1.x, 001Eh for v2.0)
(ret) size of returned data
02h WORD information flags (see #0180)
04h DWORD number of cylinders on drive
08h DWORD number of heads on drive
0Ch DWORD number of sectors per track
10h QWORD total number of sectors on drive
18h WORD bytes per sector
---v2.0---
1Ah DWORD -> configuration parameters (see #0182)
FFFFh:FFFFh if not available
SeeAlso: #0181,#1855

Bitfields for IBM/MS INT 13 Extensions information flags:
Bit(s) Description (Table 0180)
0 DMA boundary errors handled transparently
1 cylinder/head/sectors-per-track information is valid
2 removable drive
3 write with verify supported
4 drive has change-line support (required if drive >= 80h is removable)
5 drive can be locked (required if drive >= 80h is removable)
6 CHS information set to maximum supported values, not current media

Format of Phoenix Enhanced Disk Drive Spec translated drive parameter table:
Offset Size Description (Table 0181)
00h WORD number of cylinders
02h BYTE number of heads
03h BYTE A0h (signature indicating translated table)
04h BYTE number of physical sectors per track
05h WORD starting write precompensation cylinder number
07h BYTE reserved
08h BYTE control byte (see #1857 at INT 41)
09h WORD number of physical cylinders
0Bh BYTE number of physical heads
0Ch WORD cylinder number of landing zone
0Eh BYTE number of logical sectors per track
0Fh BYTE checksum
Program: the Phoenix Enhanced Disk Drive Specification is an addition to the
IBM/MS INT 13 extensions
SeeAlso: #0182,#1855

Format of Phoenix Enhanced Disk Drive Spec fixed disk param table extension:
Offset Size Description (Table 0182)
00h WORD physical I/O port base address
02h WORD disk-drive control port address
04h BYTE drive flags (see #0183)
05h BYTE proprietary information
bits 7-4 reserved (0)
bits 3-0: Phoenix proprietary (used by BIOS)
06h BYTE IRQ (bits 3-0; bits 7-4 reserved and must be 0)
07h BYTE sector count for multi-sector transfers
08h BYTE DMA control
bits 7-4: DMA type
bits 3-0: DMA channel
09h BYTE programmed I/O control
bits 7-4: reserved (0)
bits 3-0: PIO type (1,2, or 3)
0Ah WORD drive options (see #0184)
0Ch 2 BYTEs reserved (0)
0Eh BYTE extension revision level (high nybble=major, low nybble=minor)
(currently 10h)
0Fh BYTE 2's complement checksum of bytes 00h-0Eh
SeeAlso: #0181

Bitfields for Phoenix Enhanced Disk Drive Spec drive flags:
Bit(s) Description (Table 0183)
7 reserved (1)
6 LBA enabled
5 reserved (1)
4 drive is slave
3-0 reserved (0)
SeeAlso: #0182,#0184

Bitfields for Phoenix Enhanced Disk Drive Spec drive options:
Bit(s) Description (Table 0184)
0 fast PIO enabled
1 fast DMA access enabled
2 block PIO (multi-sector transfers) enabled
3 CHS translation enabled
4 LBA translation enabled
5 removable media
6 CD-ROM
7 32-bit transfer mode
15-8 reserved
SeeAlso: #0182,#0183
--------d-1349-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED MEDIA CHANGE
AH = 49h
DL = drive number
Return: CF clear if media has not changed
AH = 00h
CF set if media may have changed
AH = 06h (see #0140)
Note: unlike AH=16h, any drive number may be specified
SeeAlso: AH=16h,AH=41h"INT 13 Ext",AH=46h
--------v-135342CX0001-----------------------
INT 13 - ScanBoot - INSTALLATION CHECK
AX = 5342h ("SB")
CX = 0001h
DX = 0000h
Return: CF clear if ScanBoot installed
AX = 0000h
CX = serial number ("SW" if shareware release)
DX = version
BX,SI,ES destroyed
Program: ScanBoot is a virus-detection TSR by PanSoft
--------d-135501-----------------------------
INT 13 - Seagate ST01/ST02 - Inquiry
AX = 5501h
DH = number of bytes to transfer
DL = drive ID (80h, 81h, ...)
ES:BX -> buffer for results
Return: ES:BX buffer filled with the Inquiry results
Notes: the ST01/ST02 BIOS does not return any success/failure indication,
so all commands must be assumed to have been successful
the ST01/ST02 BIOS always maps its drives after the previous BIOS
drives without changing the BIOS drive count at 0040h:0075h
this command is identical to the SCSI Inquiry command
--------d-135502-----------------------------
INT 13 - Seagate ST01/ST02 - RESERVED
AX = 5502h
--------d-135503-----------------------------
INT 13 - Seagate ST01/ST01 - Set Device Type Qualifier (DTQ)
AX = 5503h
DH = DTQ byte (see #0185)
DL = drive ID (80h, 81h, ...)
Return: nothing

Bitfields for DTQ byte:
Bit(s) Description (Table 0185)
7 reserved
6 SCSI drive attached
5 reserved
4 selected drive is ST225N/NP (Paired)
3 selected drive is ST225N
2 Host Adapter checks parity on the selected drive
1 selected drive has been installed
0 Seagate installation software present
--------d-135504-----------------------------
INT 13 U - Seagate - ??? - RETURN IDENTIFICATION
AX = 5504h
DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
AX = 4321h if ST01/ST02h
AX = 4322h if ??? Seagate controller
CF set on error
SeeAlso: AX=5505h,AX=5514h
--------d-135504-----------------------------
INT 13 - Seagate ST01/ST02 - RETURN IDENTIFICATION
AX = 5504h
DL = drive ID (80h, 81h, ...)
Return: AX = 4321h
BL = selected drive number (00h, 01h)
BH = number of drives attached to Host Adapter (max. 2)
--------d-135505-----------------------------
INT 13 - Seagate - ??? - PARK HEADS
AX = 5505h
DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
CF set on error
SeeAlso: AX=5504h,AX=5515h
--------d-135505-----------------------------
INT 13 - Seagate ST01/ST02 - PARK HEADS
AX = 5505h
DL = drive ID (80h, 81h, ...)
DH = subfunction
00h park heads (SCSI Stop command)
01h un-park heads (SCSI Start command)
Return: nothing
--------d-135506-----------------------------
INT 13 - Seagate ST01/ST02 - SCSI Bus Parity
AX = 5506h
DL = drive ID (80h, 81h, ...)
DH = subfunction
00h disable parity check
01h enable parity check
02h return current parity setting
Return: AL = status
00h parity checking disabled
01h parity checking enabled
--------d-135507-----------------------------
INT 13 - Seagate ST01/ST02 - RESERVED FUNCTIONS
AX = 5507h to 550Dh
Note: officially listed as "reserved"
--------d-135514-----------------------------
INT 13 U - Seagate - ???
AX = 5514h
DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
CF set on error
AX = return value (FEBEh,FEBFh,FEDAh,FEDBh)
SeeAlso: AX=5504h,AX=5515h
--------d-135515-----------------------------
INT 13 U - Seagate - PARK HEADS???
AX = 5515h
DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
CF set on error
Note: appears to be identical to AX=5505h
SeeAlso: AX=5504h,AX=5505h
--------d-1359-------------------------------
INT 13 - SyQuest - Generic SCSI pass through
AH = 59h
CX = HOST_ID, 0-based
DX = 80h
ES:BX pointer to SCSI structure (see #0186)
Return: CF clear
AH = 95h
SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=1Fh"SyQuest"

Format of SyQuest SCSI structure:
Offset Size Description (Table 0186)
00h WORD opcode (see #0187)
02h BYTE target's SCSI ID
03h BYTE target's logical unit number
04h BYTE data direction (00h no data xfer, 01h data in, FFh data out)
05h BYTE host status
00h successful
01h selection time out
02h data over-run or under-run
06h BYTE target status at command completion
00h successful
02h check status
08h busy
07h BYTE command data block length
08h DWORD request data length
0Ch DWORD result data length (actual length of data transferred)
10h DWORD -> CDB
14h DWORD -> data buffer
Note: The handler does not perform a 'Request Sense' command if there was an error

(Table 0187)
Values for SCSI opcode:
00h verify interface
clears carry flag and returns if function is available
01h returns the ID of the INT 13h Handler in a NULL terminated string of
length less than 40 byte including the terminator.
The string is stored in the buffer pointed by p_buf.
02h device mapping info. The caller provides a one byte buffer.
The handler stores the Int 13h Device ID (80h or above) in the buffer.
It stores 0 if that target does not exists.
03h execute SCSI command
04h device reset
05h SCSI bus reset
--------d-1370-------------------------------
INT 13 - Priam EDVR.SYS DISK PARTITIONING SOFTWARE???
AH = 70h
???
Return: ???
Note: Priam's EDISK.EXE (FDISK replacement) and EFMT.EXE (low-level
formatting program) make this call, presumably to EDVR.SYS (the
partitioning driver)
SeeAlso: AH=ADh
----------1375-------------------------------
INT 13 - ???
AH = 75h
???
Return: AH = ???
???
Note: intercepted by PC-Cache (v5.1 only)
----------1376-------------------------------
INT 13 - ???
AH = 76h
???
Return: AH = ???
???
Note: intercepted by PC-Cache (v5.1 only)
--------c-137B00-----------------------------
INT 13 - NOW! v3.05 - GET INFORMATION
AX = 7B00h
CX:DX -> 1F8h-byte buffer for information record (see #0188)
Return: AX = 0000h
BX = segment of main resident code
ES = ???
Program: NOW! is a disk cache by Vertisoft Systems, Inc.
SeeAlso: AX=7B02h,AH=EFh

Format of NOW! information record:
Offset Size Description (Table 0188)
00h 80 BYTEs name of directory from which NOW! was started
50h 424 BYTEs ???
81h ? BYTEs array of bytes for ???
F7h 250 BYTEs array of 25 entries, one per drive???
Offset Size Description
00h 2 BYTEs ???
02h WORD ???
04h WORD ???
06h 4 BYTEs ???
1F1h 7 BYTEs ???
--------c-137B01-----------------------------
INT 13 - NOW! v3.05 - ???
AX = 7B01h
Return: DX = segment of ???
SeeAlso: AX=7B00h
--------c-137B02-----------------------------
INT 13 - NOW! v3.05 - SET INFORMATION
AX = 7B02h
BX = segment of ??? (10h above a PSP)
CX:DX -> 1F8h-byte information record (see #0188)
Return: ???
Program: NOW! is a disk cache by Vertisoft Systems, Inc.
Note: NOW! grabs the INT 24h value from the PSP reached via the segment in
BX
SeeAlso: AX=7B00h
--------c-137B03-----------------------------
INT 13 - NOW! v3.05 - ???
AX = 7B03h
???
Return: ???
SeeAlso: AX=7B00h,AX=7B04h
--------c-137B04-----------------------------
INT 13 - NOW! v3.05 - ???
AX = 7B04h
???
Return: ???
SeeAlso: AX=7B03h
--------c-137B05-----------------------------
INT 13 - NOW! v3.05 - GET DISK ACCESSES???
AX = 7B05h
Return: BX:AX = number of physical accesses???
DX:CX = total disk accesses???
SeeAlso: AX=7B00h,AX=7B06h
--------c-137B06-----------------------------
INT 13 - NOW! v3.05 - GET ???
AX = 7B06h
BX = ???
Return: AX = 0000h
BX = ???
SeeAlso: AX=7B05h,AX=7B07h
--------c-137B07-----------------------------
INT 13 - NOW! v3.05 - GET ???
AX = 7B07h
Return: AX = ???
BX = ???
CX = ???
DX = ???
SeeAlso: AX=7B06h
--------c-137B08-----------------------------
INT 13 - NOW! v3.05 - ???
AX = 7B08h
CX = ??? (default 00h)
Return: ???
SeeAlso: AX=7B00h
--------c-1380--CX6572-----------------------
INT 13 - FAST! v4.02+ - API
AH = 80h
CX = 6572h
DX = 1970h
ES:BX -> request packet (see #0190)
AL = function number (see #0189)
Return: AH = status (except function 06h)
00h if successful
01h invalid function
05h not supported by the installed variant
CF clear if successful
CF set on error
AL may be destroyed
Program: FAST! is a disk cache by Future Computing Systems and marketed by BLOC
Publishing Corp.
SeeAlso: AX=8001h,AX=8006h,AX=8007h
Index: hotkeys;FAST!

(Table 0189)
Values for FAST! function:
01h get cache information (see separate entry)
04h disable cache
05h enable cache and reset statistics
06h installation check (see separate entry)
07h unhook interrupts (see separate entry)
09h flush cache
0Ah (v4.02+) enable staged writes
0Bh (v4.02+) disable staged writes
0Ch (v4.02+) enable beep on flush
0Dh (v4.02+) disable beep on flush
0Eh ???
0Fh ???
10h (v4.12+) enable hotkeys
11h (v4.12+) disable hotkeys
12h (v4.13+) set idle delay
13h (v4.13+) set flush dirty percentage
14h (v5.00+) enable mouse checks
15h (v5.00+) disable mouse checks
16h (v5.00d+) reduce cache size to minimum
17h (v5.00d+) increase cache size to maximum

Format of FAST! request packet:
Offset Size Description (Table 0190)
00h DWORD pointer to 19-byte signature string (see #0191)
04h DWORD pointer to buffer for data (if needed by function)

(Table 0191)
Values for FAST! v4.04-v5.03 signature string:
13h 07h 06h 08h 11h 18h 0Fh 0Eh 02h 18h 13h 08h 0Bh 08h 01h 00h 04h 08h 15h
--------c-138001CX6572-----------------------
INT 13 - FAST! v4.02+ - GET CACHE INFORMATION
AX = 8001h
CX = 6572h
DX = 1970h
ES:BX -> request packet (see #0192)
Return: AH = 00h if successful
SeeAlso: AH=80h,AX=8006h

Format of FAST! request packet:
Offset Size Description (Table 0192)
00h DWORD -> 19-byte signature string (see #0191)
04h DWORD -> buffer for cache information (see #0193)

Format of FAST! cache information (v5.00-5.03):
Offset Size Description (Table 0193)
00h WORD binary version number of FAST! (v5.00 = 01F4h)
02h BYTE revision letter (61h = X.XXa, 62h = X.XXb, etc.)
03h BYTE FAST! variant
(01h = FASTE, 02h = FASTX BIOS, 04h = FASTC, 20h = FASTX XMS)
04h DWORD total number of read requests
08h DWORD number of physical disk reads
0Ch DWORD grabbed hash buckets
10h DWORD "st_386mem"
14h DWORD total number of writes (only counted when staging enabled)
18h DWORD number of physical disk writes (only when staging enabled)
1Ch DWORD number of write errors while flushing cache
20h WORD flags1 (see #0194)
22h WORD flags
bit 0: ???
bit 1: staged writes enabled
24h WORD ???
26h WORD maximum cache size in KB
28h WORD minimum cache size in KB
2Ah WORD segment of first cache buffer (FASTC)
segment of EMS page frame (FASTE)
XMS handle (FASTX XMS)
2Ch WORD number of hash buckets containing no entries
2Eh WORD number of hash buckets containing one entry
30h WORD number of hash buckets containing two entries
32h WORD number of hash buckets containing three entries
34h WORD number of hash buckets containing four entries
36h WORD number of hash buckets containing five entries
38h WORD maximum contiguous sectors
3Ah WORD hash factor
3Ch WORD number of paragraphs of memory used below 1M
3Eh WORD entries per hash bucket
40h WORD idle delay in seconds
42h 2 BYTEs ???
44h WORD staged write threshold percentage
46h 2 BYTEs ???
48h WORD number of dirty sectors
4Ah WORD number of staged write buffers
4Ch WORD current cache size in KB
4Eh WORD beep frequency in Hz
50h WORD ???
52h WORD ???

Bitfields for FAST! flags1:
Bit(s) Description (Table 0194)
0 beep on flush
3 hotkeys enabled
4 mouse idle check enabled
8 caching enabled
13 ???
--------c-138006CX6572-----------------------
INT 13 - FAST! v4.02+ - INSTALLATION CHECK
AX = 8006h
CX = 6572h
DX = 1970h
ES:BX -> request packet (see #0195)
Return: AX = 1965h if installed
SeeAlso: AH=80h,AX=8001h,AX=8007h

Format of FAST! request packet:
Offset Size Description (Table 0195)
00h DWORD -> 19-byte signature string (see #0191)
--------c-138007CX6572-----------------------
INT 13 - FAST! v4.02+ - UNHOOK INTERRUPTS
AX = 8007h
CX = 6572h
DX = 1970h
ES:BX -> request packet (see #0196)
Return: AX = 1965h if installed
SeeAlso: AH=80h,AX=8006h
Index: uninstall;FAST!

Format of FAST! request packet:
Offset Size Description (Table 0196)
00h DWORD -> 19-byte signature string (see #0191)
--------c-1381--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = 81h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
to PC-Kwik v3.20 and PC-Cache v5.5 to PC-Kwik v3.27)
returns immediately in PC-Cache v5.x
Index: PC-Cache|Qualitas Qcache
--------c-1382--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = 82h
SI = 4358h
???
Return: AL = ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call
SeeAlso: AH=84h
Index: PC-Cache|Qualitas Qcache
--------c-1383--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = 83h
SI = 4358h
AL = ???
ES:BX -> ???
???
Return: ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call
SeeAlso: AH=85h
Index: PC-Cache|Qualitas Qcache
--------c-1384--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = 84h
SI = 4358h
AL = ???
???
Return: AL = ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call
SeeAlso: AH=82h
Index: PC-Cache|Qualitas Qcache
--------c-1385--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = 85h
SI = 4358h
AL = ???
DL = ???
???
Return: ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
to PC-Kwik v3.20)
SeeAlso: AH=83h
Index: PC-Cache|Qualitas Qcache
--------c-1386--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
AH = 86h
SI = 4358h
???
Return: ???
Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
thus supports this call
Index: Qualitas Qcache
--------c-1387--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
AH = 87h
SI = 4358h
???
Return: AH = status??? (00h)
CX = ???
DX = ??? (0000h)
Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
thus supports this call
Index: Qualitas Qcache
--------c-1388--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
AH = 88h
SI = 4358h
???
Return: AH = status??? (00h)
CX = ???
DX = ??? (0000h)
Note: Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
thus supports this call
Index: Qualitas Qcache
--------c-1389--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 89h
SI = 4358h
???
Return: ???
--------c-138A--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 8Ah
SI = 4358h
???
Return: ???
--------c-138EED-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEDh
???
Return: ???
Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross)
SeeAlso: AX=8EEEh,AX=8EEFh,AH=EEh,INT 2F/AH=DFh
--------c-138EEE-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEEh
Return: CF set
AX = CS of HyperDisk resident code
???
Note: identical to AX=8EEFh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEFh,AH=EEh
--------c-138EEF-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEFh
Return: CF set
AX = CS of HyperDisk resident code
???
Note: identical to AX=8EEEh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEEh,AH=EEh
--------c-1392--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 92h
SI = 4358h
???
Return: AH = status??? (00h)
DL = ???
SeeAlso: AH=93h
--------c-1393--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 93h
SI = 4358h
???
Return: AH = status??? (00h)
AL = ???
SeeAlso: AH=92h
--------c-1394--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 94h
SI = 4358h
???
Return: ???
--------c-1395--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 95h
SI = 4358h
???
Return: AH = status??? (00h)
DX = ???
--------c-1396--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 96h
SI = 4358h
AL = ??? (01h)
BX = ??? (0790h)
DL = ???
Return: AH = status??? (00h)
DX = ???
--------c-1397--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 97h
SI = 4358h
???
Return: ???
--------c-1398--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 98h
SI = 4358h
???
Return: ???
--------c-1399--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 99h
SI = 4358h
???
Return: ???
--------c-139A--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 9Ah
SI = 4358h
???
Return: ???
--------c-139B--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 9Bh
SI = 4358h
???
Return: ???
--------c-139C--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 9Ch
SI = 4358h
???
Return: ???
Note: functions 9Ch and 9Dh are the only ones which are fully reentrant; all
other PC-Kwik API calls (INT 13/81h-B0h) return AX=0200h and CF clear
if a previous call is still in progress
--------c-139D--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = 9Dh
SI = 4358h
???
Return: ???
--------c-13A0--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - GET RESIDENT CODE SEGMENT
AH = A0h
SI = 4358h
Return: AX = segment of resident code
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call (note that PC-Cache v5.5
corresponds to PC-Kwik v3.27)
SeeAlso: INT 16/AX=FFA5h/CX=1111h
Index: PC-Cache|Qualitas Qcache
--------c-13A1--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - FLUSH CACHE
AH = A1h
SI = 4358h
Return: CF clear
AH = 00h (v5.10)
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
corresponds to PC-Kwik v3.20)
SeeAlso: INT 16/AX=FFA5h/CX=FFFFh
Index: PC-Cache|Qualitas Qcache
--------c-13A2--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = A2h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
corresponds to PC-Kwik v3.20)
Index: PC-Cache|Qualitas Qcache
--------c-13A3--SI4358-----------------------
INT 13 U - Super PC-Kwik v5.10+ - DISABLE CACHE
AH = A3h
SI = 4358h
Return: CF clear
SeeAlso: AH=A4h
--------c-13A4--SI4358-----------------------
INT 13 U - Super PC-Kwik v5.10+ - ENABLE CACHE
AH = A4h
SI = 4358h
Return: CF clear
SeeAlso: AH=A3h
--------c-13A5--SI4358-----------------------
INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM TERMINATION NOTIFICATION
AH = A5h
SI = 4358h
Return: AX = ???
SI = ???
Notes: called and used internally by Super PC-Kwik when a program terminates
via INT 21/AH=00h, INT 21/AH=31h, or INT 21/AH=4Ch
this call is not supported by Qualitas Qcache 4.00
Index: PC-Cache
SeeAlso: AH=A6h,AH=A9h,INT 21/AH=00h,INT 21/AH=31h,INT 21/AH=4Ch
--------c-13A6--SI4358-----------------------
INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM LOAD NOTIFICATION
AH = A6h
SI = 4358h
DS:DX -> ASCIZ program name
ES:BX -> EXEC data block (see #0803 at INT 21/AH=4Bh)
Return: ???
Note: called and used internally by Super PC-Kwik when a program is loaded
with INT 21/AX=4B00h
SeeAlso: AH=A5h,AH=A9h,INT 21/AH=4Bh
--------c-13A7--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - ???
AH = A7h
SI = 4358h
Return: ???
Note: called and used internally by Super PC-Kwik on some INT 21 calls
SeeAlso: AH=A5h,AH=A6h,AH=A8h
--------v-13A759-----------------------------
INT 13 U - Novell DOS 7 - SDRes v27.03 - ???
AX = A759h
Return: AX = 59A7h if installed
DX:BX -> ??? data
Program: SDRes is the resident portion of the Search&Destroy antiviral by
Fifth Generation Systems, as bundled with Novell DOS 7
SeeAlso: INT 21/AH=0Eh/DL=ADh
--------c-13A8--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - ???
AH = A8h
SI = 4358h
Return: ???
Note: called and used internally by Super PC-Kwik on some INT 21 calls
SeeAlso: AH=A5h,AH=A6h,AH=A7h
--------c-13A9--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - EXITCODE RETRIEVAL NOTIFICATION
AH = A9h
SI = 4358h
Return: ???
Note: called and used internally by Super PC-Kwik when an application issues
INT 21/AH=4Dh
SeeAlso: AH=A5h,AH=A6h,INT 21/AH=4Dh
--------c-13AA--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
AH = AAh
SI = 4358h
???
Return: ???
Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
this call
--------c-13AB--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
AH = ABh
SI = 4358h
???
Return: ???
Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
this call
--------c-13AC--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
AH = ACh
SI = 4358h
???
Return: ???
Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
this call
--------d-13AD-------------------------------
INT 13 - Priam HARD DISK CONTROLLER???
AH = ADh
???
Return: ???
Note: this call is made from Priam's EFMT.EXE (low-level formatter), probably
to check the ROM type on the controller for their hard disk kits
SeeAlso: AH=70h
--------c-13AD--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
AH = ADh
SI = 4358h
???
Return: ???
Note: Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
this call
--------c-13AE--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
AH = AEh
SI = 4358h
???
Return: ???
--------c-13B0--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
AH = B0h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC-Kwik, and thus
supports this call; Qualitas Qcache does not support it
Index: PC-Cache
--------v-13EC00-----------------------------
INT 13 - VIRUS - "Tiso" - INSTALLATION CHECK
AX = EC00h
Return: CF clear if installed
SeeAlso: AH=F2h,INT 12/AX=4350h/BX=4920h
--------d-13EE-------------------------------
INT 13 - SWBIOS - SET 1024-CYLINDER FLAG
AH = EEh
DL = drive number (80h, 81h)
Return: CF clear
AH = 00h
Program: SWBIOS is a TSR by Ontrack Computer Systems
Desc: the following INT 13 call will add 1024 to the specified cylinder
number to get the actual cylinder number desired
Notes: the flag is cleared by all INT 13 calls except AH=EEh and AH=EFh
Disk Manager also supports these calls
this function is also supported by HyperDisk v4.01+ and PC-Cache v5.5+,
in order to allow caching of drives using SWBIOS to access more than
1024 cylinders
for software which supports that call, this function is equivalent to
calling AH=EFh with CX=0400h
SeeAlso: AH=F9h,AH=FEh,INT 16/AX=FFA5h/CX=1111h,INT 2F/AH=DFh
Index: PC-Cache;huge disks|Disk Manager
--------c-13EF-------------------------------
INT 13 - Ontrack Drive Rocket - SET CYLINDER OFFSET
AH = EFh
CX = cylinder offset for next INT 13 call
DL = drive number (80h, 81h)
Return: CF clear
AH = 00h
Program: Drive Rocket is a drive accelerator by Ontrack Computer Systems for
IDE drives supporting the read multiple and write multiple commands
Desc: the following INT 13 call will add the number given by this call to
the specified cylinder to get the actual cylinder number, then reset
the offset to zero
Note: this function is also supported by the NOW! disk cache, and presumably
newer versions of SWBIOS and Disk Manager
for software which supports this call, AH=EEh is equivalent to calling
this function with CX=0400h
the cylinder offset is reset to 0 by all INT 13 called except AH=EEh
and AH=EFh
SeeAlso: AX=7B00h
--------V-13F2-------------------------------
INT 13 - VIRUS - "Neuroquila" - INSTALLATION CHECK
AH = F2h
Return: CF ??? if installed
SeeAlso: AX=EC00h,INT 12/AX=4350h/BX=4920h,INT 21/AX=0B56h
--------d-13F9-------------------------------
INT 13 - SWBIOS - INSTALLATION CHECK
AH = F9h
DL = drive number (80h,81h)
Return: CF clear
DX = configuration word
bit 15 set if other SWBIOS extensions available
CF set on error
Program: SWBIOS is a TSR by Ontrack Computer Systems
Note: Disk Manager also supports these calls
SeeAlso: AH=EEh
Index: Disk Manager
--------v-13FA--DX5945-----------------------
INT 13 - PC Tools v8+ VSAFE, VWATCH - API
AH = FAh
DX = 5945h
AL = function (00h-07h)
Return: varies by function
if not installed:
CF set
AH = 01h
Note: this API is identical to the ones on INT 16/AH=FAh and INT 21/AH=FAh,
so it is listed in its entirety under INT 16/AX=FA00h and following
SeeAlso: INT 16/AX=FA00h
--------d-13FE-------------------------------
INT 13 - SWBIOS - GET EXTENDED CYLINDER COUNT
AH = FEh
DL = drive number (80h, 81h)
Return: CF clear
DX = number of cylinders beyond 1024 on drive
Program: SWBIOS is a TSR by Ontrack Computer Systems
Notes: standard INT 13/AH=08h will return a cylinder count truncated to 1024
BIOS without this extension would return count modulo 1024
Disk Manager also supports these calls
SeeAlso: AH=EEh
--------U-13FFFFBHAA-------------------------
INT 13 - UNIQUE UX Turbo Utility - SET TURBO MODE
AX = FFFFh
BH = AAh
BL = subfunction
00h installation check
Return: AX = 1234h if installed
01h turn on Turbo mode
02h turn off Turbo mode
03h set Turbo mode according to hardware switch
04h set disk access to Turbo mode
05h set disk access to Normal mode
SeeAlso: INT 15/AH=DFh
Index: installation check;UNIQUE UX Turbo Utility
--------S-14---------------------------------
INT 14 - SERIAL - Digiboard DigiCHANNEL PC/X* Extender INT 14 (XAPCM232.SYS)
Note: the installation check for this driver is to determine whether the
"~DOSXAM~" character device exists
Index: installation check;Digiboard DigiCHANNEL
--------S-1400-------------------------------
INT 14 - SERIAL - INITIALIZE PORT
AH = 00h
AL = port parameters (see #0197)
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #0201)
FFh if error on Digiboard XAPCM232.SYS
AL = modem status (see #0202)
Notes: default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
since the PCjr supports a maximum of 4800 bps, attempting to set 9600
bps will result in 4800 bps
various network and serial-port drivers support the standard BIOS
functions with interrupt-driven I/O instead of the BIOS's polled I/O
the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=57h
SeeAlso: AX=8000h"ARTICOM",AH=81h"COMM-DRV",AH=82h"COURIERS",AH=8Ch

Bitfields for serial port parameters:
Bit(s) Description (Table 0197)
7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
2 stop bits (set = 2, clear = 1)
1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
SeeAlso: #0199,#0204,#0205,#0206
--------S-1400-------------------------------
INT 14 - FOSSIL (Fido/Opus/Seadog Standard Interface Level) - INITIALIZE
AH = 00h
AL = initializing parameters
7 - 6 - 5 4 - 3 2 1 - 0
-BAUD RATE- PARITY STOP WORD
BITS LENGTH
000 19200 bd 00 none 0: 1 00: 5
001 38400 bd 01 odd 1: 2 01: 6
010 300 bd 11 even 10: 7
011 600 bd 11: 8
100 1200 bd
101 2400 bd
110 4800 bd
111 9600 bd (4800 on PCjr)
DX = port number (0-3 or FFh if only performing non-I/O setup)
Return: AH = RS-232 status code bits (see #0198)
AL = modem status bits
bit 3: always 1
bit 7: DCD - carrier detect
SeeAlso: #0197,AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"

Bitfields for FOSSIL RS-232 status:
Bit(s) Description (Table 0198)
0 RDA - input data is available in buffer
1 OVRN - data has been lost
5 THRE - room is available in output buffer
6 TSRE - output buffer empty
--------S-1400-------------------------------
INT 14 - MBBIOS - INITIALIZE PORT
AH = 00h
AL = port parameters (see #0199)
DX = port number
Return: AH = line status (see #0201)
AL = modem status (see #0202)
Note: MBBIOS was written by H. Roy Engehausen
SeeAlso: AH=04h"MBBIOS",AH=05h"MBBIOS",AH=09h"MBBIOS"

Bitfields for MBBIOS port parameters:
Bit(s) Description (Table 0199)
7-5 data rate
(normally 110,150,300,600,1200,2400,4800,9600 bps;
9600,14400,19200,28800,38400,57600,115200,330400 bps
if the high-speed option is set)
4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
2 stop bits (set = 2, clear = 1)
1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
SeeAlso: #0197
--------N-1400--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY DEFAULT CONNECTION PARAMETERS
AH = 00h
DX = FFFFh
ES:DI -> vector string specifying new parameters
Return: AH = return code (00h,03h) (see #0200)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Note: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh

(Table 0200)
Values for Connection Manager return code:
00h successful
01h no such connection
02h invalid connection ID
03h invalid subvector found
04h communication error (check BH)
06h insufficient resources, retry later
FFh no data available
--------S-1401-------------------------------
INT 14 - SERIAL - WRITE CHARACTER TO PORT
AH = 01h
AL = character to write
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH bit 7 clear if successful
AH bit 7 set on error
AH bits 6-0 = port status (see #0201)
Notes: various network and serial-port drivers support the standard BIOS
functions with interrupt-driven I/O instead of the BIOS's polled I/O
the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=02h,AH=0Bh"FOSSIL",AX=8000h"ARTICOM",AH=89h
--------N-1401--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER
AH = 01h
DX = FFFFh
BH = character to send
Return: AH = return code (00h-02h,06h) (see #0200)
Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
this function is provided primarily for compatibility; AH=06h/DX=FFFFh
is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AH=06h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1402-------------------------------
INT 14 - SERIAL - READ CHARACTER FROM PORT
AH = 02h
AL = 00h (ArtiCom)
DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see #0201)
AL = received character if AH bit 7 clear
Notes: will timeout if DSR is not asserted, even if function 03h returns
data ready
various network and serial-port drivers support the standard BIOS
functions with interrupt-driven I/O instead of the BIOS's polled I/O
the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
--------S-1402-------------------------------
INT 14 - FOSSIL - RECEIVE CHARACTER WITH WAIT
AH = 02h
DX = port number (0-3)
Return: AL = character received
AH = 00h
SeeAlso: AH=01h,AH=02h"SERIAL"
--------N-1402--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER
AH = 02h
DX = FFFFh
BH = character to send
Return: AH = return code (00h-02h,04h,FFh) (see #0200)
BH = line status (see #0201)
AL = received character (if any)
Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
this function is provided primarily for compatibility; AH=07h/DX=FFFFh
is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1403-------------------------------
INT 14 - SERIAL - GET PORT STATUS
AH = 03h
AL = 00h (ArtiCom)
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #0201)
AL = modem status (see #0202)
AX = 9E00h if disconnected (ArtiCom)
Note: the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=00h,AH=07h"MultiDOS",AX=8000h"ARTICOM",AH=81h"COURIERS",AX=FD02h

Bitfields for serial line status:
Bit(s) Description (Table 0201)
7 timeout
6 transmit shift register empty
5 transmit holding register empty
4 break detected
3 framing error
2 parity error
1 overrun error
0 receive data ready
Note: for COMM-DRV, if bit 7 is set, an error occurred, and may be retrieved
through a separate call (see AX=8000h"COMM-DRV")

Bitfields for modem status:
Bit(s) Description (Table 0202)
7 carrier detect
6 ring indicator
5 data set ready
4 clear to send
3 delta carrier detect
2 trailing edge of ring indicator
1 delta data set ready
0 delta clear to send
--------N-1403--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN COMMUNICATION PORT STATUS
AH = 03h
DX = FFFFh
AL = connection ID
Return: AH = return code (00h-02h) (see #0200)
BH = line status (see #0203)
BL = modem status (see #0202) (only bits 4,5,7; all others zero)
Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
SeeAlso: AH=00h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Ah/DX=FFFFh

Bitfields for Connection Manager line status:
Bit(s) Description (Table 0203)
7 CTS changed
6 current CTS state
5 timeout
4 break
3 framing error
2 parity error
1 overrun
0 current carrier state (0 active, 1 no carrier)
--------S-1404-------------------------------
INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PS)
AH = 04h
AL = break status
00h if break
01h if no break
BH = parity (see #0204)
BL = number of stop bits
00h one stop bit
01h two stop bits (1.5 if 5 bit word length)
CH = word length (see #0205)
CL = bps rate (see #0206)
DX = port number
Return: AX = port status code (see #0201,#0202)
SeeAlso: AH=00h,AH=1Eh,AX=8000h"ARTICOM"

(Table 0204)
Values for serial port parity:
00h no parity
01h odd parity
02h even parity
03h stick parity odd
04h stick parity even
SeeAlso: #0197,#0205,#0206,#0207

(Table 0205)
Values for serial port word length:
00h 5 bits
01h 6 bits
02h 7 bits
03h 8 bits
SeeAlso: #0197,#0204,#0206,#0242

(Table 0206)
Values for serial port bps rate:
00h 110 (19200 if ComShare installed)
01h 150 (38400 if ComShare installed)
02h 300
03h 600 (14400 if ComShare installed)
04h 1200
05h 2400
06h 4800 (28800 if ComShare installed)
07h 9600
08h 19200
---ComShare---
09h 38400
0Ah 57600
0Bh 115200
SeeAlso: #0197,#0204,#0206,#0243,#0250,AH=36h,#0259,#0464,#1616
--------S-1404-------------------------------
INT 14 - FOSSIL - INITIALIZE DRIVER
AH = 04h
DX = port number
optionally BX=4F50h
ES:CX -> byte to be set upon ^C
Return: AX = 1954h (if successful)
BL = maximum function number supported (excluding 7Eh and above)
BH = revision of FOSSIL specification supported
DTR is raised
Note: the word at offset 6 in the interrupt handler contains 1954h, and the
following byte contains the maximum function number supported; this
can serve as an installation check
SeeAlso: AH=05h"FOSSIL",AH=1Ch,INT 11/AH=BCh
Index: installation check;FOSSIL
--------S-1404-------------------------------
INT 14 - MultiDOS Plus IODRV - INITIALIZE PORT
AH = 04h
Return: port initialized; if Hayes-compatible modem, a connection has been
established
Note: the port number is stored at offset BEh in the Task Control Block
(see #0345 at INT 15/AH=13h"MultiDOS")
SeeAlso: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1404-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE BAUD RATE
AH = 04h
AL = initializing parameters (see #0207)
BX = baud rate
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=05h"Digiboard"

Bitfields for Digiboard initializing parameters:
Bit(s) Description (Table 0207)
7-5 unused
4-3 parity (00 none, 01 odd, 11 even)
2 stop bits (0 = one, 1 = two)
1-0 data bits (00 = five, 01 = six, 10 = seven, 11 = eight)
SeeAlso: #0204,#0205
--------S-1404-------------------------------
INT 14 - MBBIOS - INSTALLATION CHECK
AH = 04h
DX = port number
Return: AX = AA55h if installed on specified port
SeeAlso: AH=00h"MBBIOS",AH=09h"MBBIOS"
--------N-1404--DXFFFF-----------------------
INT 14 - Connection Manager - OPEN COMMUNICATION
AH = 04h
DX = FFFFh
ES:DI -> Connection Request protocol vector (see #0208)
Return: AH = return code
00h successful
AL = connection ID
BH = connection type
00h direct connection or no dialing
01h Connection Server dialed phone
01h no response from Connection Server
03h invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Desc: initiate a connection to the Connection Server listed in the current
Client parameter set
Notes: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
all subvectors of the Connection Request vector are optional; if
missing, default values are provided by the default connection
parameter set
SeeAlso: AH=00h/DX=FFFFh,AH=05h/DX=FFFFh,AH=06h/DX=FFFFh,AH=07h/DX=FFFFh
SeeAlso: AH=0Ah/DX=FFFFh,AH=0Ch/DX=FFFFh

Format of Connection Manager protocol command vector:
Offset Size Description (Table 0208)
00h WORD (big-endian) total length of command (including this word)
02h WORD (big-endian) command code
EF01h Connection Request
EF06h Modify Connection Parameters
04h N BYTEs list of subvectors (see #0210)
allowable subvector types are 01h-04h,17h,18h for command code
EF01h; 03h,04h for command code EF06h (see #0209)

(Table 0209)
Values for Connection Manager subvector type code:
01h Connection ID
02h Destination ID
03h Asynchronous line parameters
04h Data transfer parameters
09h Line speed
0Ah Serial coding
0Bh Packet size
0Ch Timers
0Dh Special characters
0Eh Target ID
0Fh Telephone number
10h ASCII destination ID
11h Parity
12h Bits per character
13h Number of stop bits
14h Packet timer
15h Intercharacter timer
17h Flags
18h Parameter ranges
19h Flow control

Format of Connection Manager subvector:
Offset Size Description (Table 0210)
00h BYTE length of subvector
01h BYTE type code (see #0209)
02h N-2 BYTEs data, which may include subvectors
SeeAlso: #0211,#0212,#0213,#0214,#0215,#0216,#0217,#0218,#0219,#0220,#0221
SeeAlso: #0222,#0223,#0225,#0226,#0227,#0228,#0229,#0230

Format of Connection ID subvector:
Offset Size Description (Table 0211)
00h BYTE 03h (length)
01h BYTE 01h (subvector "Connection ID")
02h BYTE connection ID

Format of Destination ID subvector:
Offset Size Description (Table 0212)
00h BYTE length
01h BYTE 02h (subvector "Destination ID")
02h N BYTEs subvector(s) of type 0Eh, 0Fh, or 10h

Format of Asynchronous line parameters subvector:
Offset Size Description (Table 0213)
00h BYTE length
01h BYTE 03h (subvector "Asynchronous line parameters")
02h N BYTEs subvector(s) of type 09h, 0Ah, or 19h

Format of Data transfer parameters subvector:
Offset Size Description (Table 0214)
00h BYTE length
01h BYTE 04h (subvector "Data transfer parameters")
02h N BYTEs subvector(s) of type 0Bh, 0Ch, or 0Dh

Format of Line speed subvector:
Offset Size Description (Table 0215)
00h BYTE 04h (length)
01h BYTE 09h (subvector "Line speed")
02h WORD bit map, highest set bit selects speed
bit 0: 2400
bits 1-7: 1800, 1200, 600, 300, 115200, 150, 110 bps
bits 8-15: 57600, 38400, 19200, 14400, 9600, 7200, 4800, 3600

Format of Serial coding subvector:
Offset Size Description (Table 0216)
00h BYTE length
01h BYTE 0Ah (subvector "Serial coding")
02h N BYTEs subvector(s) of type 11h, 12h, or 13h

Format of Packet size subvector:
Offset Size Description (Table 0217)
00h BYTE 04h (length)
01h BYTE 0Bh (subvector "Packet size")
02h WORD (big-endian) packet size, 1 to 1024

Format of Timers subvector:
Offset Size Description (Table 0218)
00h BYTE length
01h BYTE 0Ch (subvector "Timers")
02h 8 BYTEs subvector of type 14h or 15h

Format of Special characters subvector:
Offset Size Description (Table 0219)
00h BYTE length
01h BYTE 0Dh (subvector "Special characters")
02h N BYTEs list of ASCII characters to be used as EOM or EOB

Format of Target ID:
Offset Size Description (Table 0220)
00h BYTE length
01h BYTE 0Eh (subvector "Target ID")
02h N BYTEs target ID, 1-16 bytes

Format of Telephone number subvector:
Offset Size Description (Table 0221)
00h BYTE length
01h BYTE 0Fh (subvector "Telephone number")
02h N BYTEs telephone number

Format of ASCII destination ID subvector:
Offset Size Description (Table 0222)
00h BYTE length
01h BYTE 10h (subvector "ASCII destination ID")
02h N BYTEs destination ID

Format of Parity subvector:
Offset Size Description (Table 0223)
00h BYTE 03h (length)
01h BYTE 11h (subvector "Parity")
02h BYTE parity type (see #0224)

Bitfields for Connection Manager parity type:
Bit(s) Description (Table 0224)
7 odd
6 even
5 mark
4 space
3 none

Format of Bits per character subvector:
Offset Size Description (Table 0225)
00h BYTE 03h (length)
01h BYTE 12h (subvector "Bits per character")
02h BYTE bits per character
bit 7: seven
bit 6: eight

Format of Number of stop bits subvector:
Offset Size Description (Table 0226)
00h BYTE 03h (length)
01h BYTE 13h (subvector "Number of stop bits")
02h BYTE stop bits
bit 7: one
bit 6: 1.5
bit 5: two

Format of Packet timer and Intercharacter timer subvectors:
Offset Size Description (Table 0227)
00h BYTE 04h (length)
01h BYTE subvector type
14h Packet timer
15h Intercharacter timer
02h WORD (big-endian) unit of value representing 20ms

Format of Flags subvector:
Offset Size Description (Table 0228)
00h BYTE 03h (length)
01h BYTE 17h (subvector "Flags")
02h BYTE flags
bit 7: queueing requested

Format of Parameter ranges subvector:
Offset Size Description (Table 0229)
00h BYTE length
01h BYTE 18h (subvector "Parameter ranges")
02h N BYTEs subvector(s) of type 09h, 11h, 12h, or 13h

Format of Flow control subvector:
Offset Size Description (Table 0230)
00h BYTE length (02h-04h)
01h BYTE 19h (subvector "Flow control")
02h BYTE XOFF character
03h BYTE XON character
Note: if length is 02h, flow control is disabled; if length is 03h, any
character will be accepted as XON after an XOFF
--------S-140400-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INSTALLATION CHECK
AX = 0400h
Return: AX = 0FF0h
SeeAlso: AX=0401h,AX=0408h

--------S-140401-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INITIALIZE MODE
AX = 0401h
CX = mode
SeeAlso: AX=0400h,AX=0402h
--------S-140402-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - EXTENDED INITIALIZE
AX = 0402h
CL = parameters
SeeAlso: AX=0400h,AX=0401h
--------S-140403-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - SET TIMEOUT
AX = 0403h
CX = timeout
SeeAlso: AX=0400h
--------S-140404-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE RECEIVE BUFFER
AX = 0404h
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140405-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET RECEIVE BUFFER COUNT
AX = 0405h
Return: AX = number of characters in buffer
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140406-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE TRANSMIT BUFFER
AX = 0406h
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140407-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET TRANSMIT BUFFER COUNT
AX = 0407h
Return: AX = number of characters in the buffer
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140408-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - UNINSTALL
AX = 0408h
SeeAlso: AX=0400h
--------S-1405-------------------------------
INT 14 - SERIAL - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
AH = 05h
AL = function
00h read modem control register
Return: BL = modem control register (see #0231)
AH = status
01h write modem control register
BL = modem control register (see #0231)
Return: AX = status
DX = port number
Note: also supported by ArtiCom
SeeAlso: AH=00h,AH=1Fh,AX=8000h"ARTICOM",AH=FBh

Bitfields for modem control register:
Bit(s) Description (Table 0231)
0 data terminal ready
1 request to send
2 OUT1
3 OUT2
4 LOOP
5-7 reserved
--------S-1405-------------------------------
INT 14 - FOSSIL - DEINITIALIZE DRIVER
AH = 05h
DX = port number
Return: none
DTR is not affected
SeeAlso: AH=00h,AH=04h"FOSSIL",AH=1Dh,AH=8Dh
--------S-1405-------------------------------
INT 14 - MultiDOS Plus IODRV - READ CHARACTER FROM PORT
AH = 05h
AL = timeout in seconds (00h = never)
Return: AL = status
00h successful
AH = character read
01h read error
02h timed out
other modem status (CTS, DSR) changed
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=02h,AH=04h"MultiDOS",AH=06h"MultiDOS",AH=22h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1405-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE PROTOCOL
AH = 05h
AL = protocol (see #0232)
BH = new XOFF character (00h = current)
BL = new XON character (00h = current)
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=04h"Digiboard"

Bitfields for Digiboard protocol:
Bit(s) Description (Table 0232)
7-4 unused
3 RTS/CTS
2 DSR
1,0 XON/XOFF
--------S-1405-------------------------------
INT 14 - MBBIOS - DROP DTR AND RTS
AH = 05h
DX = port number
Return: none
SeeAlso: AH=00h"MBBIOS",AH=06h"MBBIOS",AH=06h"FOSSIL"
--------S-1405-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHANGE PORT PROTOCOL
AH = 05h
AL = new port protocol (see #0233)
BH = new XOFF character
BL = new XON character
DX = port number
Return: AH = FFh if invalid protocol
SeeAlso: AH=00h,AH=04h"SERIAL",AH=06h"PC-MOS"

Bitfields for PC-MOS/386 serial port protocol:
Bit(s) Description (Table 0233)
7 set to enable/disable CD monitoring, clear to set protocol
---bit 7 set---
4 CD monitoring enabled
5 automatic restart enabled
---bit 7 clear---
0 receive XON/XOFF
1 transmit XON/XOFF
2 DTR/DSR
3 RTS/CTS
--------N-1405--DXFFFF-----------------------
INT 14 - Connection Manager - CLOSE COMMUNICATION
AH = 05h
DX = FFFFh
AL = connection ID
Return: AH = return code
00h successful
01h no such connection
02h invalid connection ID
AL = correct connection ID
Desc: terminate existing connection to allow another one to be established
Note: if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
function, but redirects the port over the network; if DX is any other
value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=0Dh/DX=FFFFh
--------S-1406-------------------------------
INT 14 - FOSSIL - RAISE/LOWER DTR
AH = 06h
DX = port
AL = DTR state to be set
00h = lower
01h = raise
SeeAlso: AH=05h"MBBIOS",AH=1Ah
--------S-1406-------------------------------
INT 14 - MultiDOS Plus IODRV - WRITE CHARACTER TO PORT
AH = 06h
AL = character
Return: AL = status
00h successful
Notes: the port number is stored at offset BEh in the Task Control Block
if output queue is full, the calling task is blocked until the
character can be stored
SeeAlso: AH=01h,AH=04h"MultiDOS",AH=05h"MultiDOS",AH=21h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1406-------------------------------
INT 14 - MBBIOS - RAISE DTR AND RTS
AH = 06h
DX = port number
Return: none
SeeAlso: AH=05h"MBBIOS",AH=07h"MBBIOS"
--------S-1406-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DRIVER 'ID' FUNCTION
AH = 06h
DX = port number
Return: AH bit 7 set
AL = number of highest function supported by driver
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
operating system by The Software Link, Inc.
SeeAlso: AH=18h"PC-MOS"
--------N-1406-------------------------------
INT 14 - TelAPI - WRITE???
AH = 06h
CX = number of characters to write???
DX = port number
ES:DI -> buffer containing data???
Return: AX = number of characters actually sent??? (negative on error)
CX = ???
Note: under Novell TELAPI.EXE v4.01, this function and AH=07h are implemented
with identical code
SeeAlso: AH=07h"TelAPI",AH=E0h"TelAPI"
--------N-1406--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER BLOCK
AH = 06h
DX = FFFFh
AL = connection ID
CX = number of characters to send
ES:DI -> buffer containing data to be sent
Return: AH = return code (see #0200)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=07h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1407-------------------------------
INT 14 - FOSSIL - RETURN TIMER TICK PARAMETERS
AH = 07h
Return: AL = timer tick interrupt number
AH = ticks per second on interrupt number in AL
DX = approximate number of milliseconds per tick
SeeAlso: AH=16h
--------S-1407-------------------------------
INT 14 - MultiDOS Plus IODRV - GET PORT STATUS
AH = 07h
Return: CL = modem status (see #0202)
CH = character at head of input queue (if any)
DX = number of characters in input queue
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS"
SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1407-------------------------------
INT 14 - MBBIOS - SEND BREAK
AH = 07h
DX = port number
Return: none
SeeAlso: AH=06h"MBBIOS",AH=FAh"EBIOS"
--------S-1407-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SEND RS-232 BREAK
AH = 07h
BX = duration of break in clock ticks
DX = port number
Return: nothing
--------N-1407-------------------------------
INT 14 - TelAPI - WRITE???
AH = 07h
CX = number of characters to write???
DX = port number
ES:DI -> buffer containing data???
Return: AX = number of characters actually sent??? (negative on error)
CX = ???
Note: under Novell TELAPI.EXE v4.01, this function and AH=06h are implemented
with identical code
SeeAlso: AH=06h"TelAPI",AH=E0h"TelAPI"
--------N-1407--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER BLOCK
AH = 07h
DX = FFFFh
AL = connection ID
BL = flag
00h wait for data
nonzero do not wait if no data avaiable
CX = size of receive buffer
ES:DI -> buffer for received characters
Return: AH = return code (00h-02h,04h,FFh) (see #0200)
BH = line status (see #0203)
CX = number of characters received
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=01h/DX=FFFFh,AH=04h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1408-------------------------------
INT 14 - FOSSIL - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE
AH = 08h
DX = port number
SeeAlso: AH=09h"FOSSIL"
--------S-1408-------------------------------
INT 14 - MultiDOS Plus 4.0 IODRV - GET AND RESET PORT LINE STATUS
AH = 08h
Return: AL = line status (see #0201)
AH destroyed
Notes: the port number is stored at offset BEh in the Task Control Block
on every line status change, the line status is ORed with the line
status accumulator; this function returns the accumulator and clears
it
SeeAlso: AH=03h,AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1408-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - ALTERNATE STATUS CHECK
AH = 08h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = RS232 status bits (see #0201 at AH=03h)
ZF set if no characters queued
ZF clear if character available
AL = next character
SeeAlso: AH=03h,AH=08h"PC-MOS",AH=09h"Digiboard",AH=14h"Digiboard"
--------S-1408-------------------------------
INT 14 - MBBIOS - NON-DESTRUCTIVE READ
AH = 08h
DX = port number
Return: AL = character (if AH bit 0 set)
AH = status (see #0201)
SeeAlso: AH=0Bh"MBBIOS",AH=0Ch"FOSSIL"
--------S-1408-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STATUS CHECK
AH = 08h
DX = port number
Return: CF set if carrier loss detected
ZF set if input buffer empty
ZF clear if characters available
AL = next character dequeued
--------N-1408--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN DEFAULT CONNECTION PARAMETERS
AH = 08h
DX = FFFFh
CX = size of buffer for parameters or 0000h to get length
ES:DI -> buffer for parameter vector (see #0208)
Return: AH = return code
00h successful
CX = number of bytes required (if CX=0000h on entry)
CX = number of bytes omitted for lack of space (if CX nonzero)
nonzero invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-1409-------------------------------
INT 14 - FOSSIL - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT
AH = 09h
DX = port number
SeeAlso: AH=08h"FOSSIL",AH=0Ah"FOSSIL",AH=88h
--------S-1409-------------------------------
INT 14 - MultiDOS Plus IODRV - RESET PORT STATUS
AH = 09h
Return: modem status byte cleared
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1409-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR BUFFERS
AH = 09h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=08h"Digiboard",AH=0Ah"Digiboard",AH=10h"Digiboard"
--------S-1409-------------------------------
INT 14 - MBBIOS - GET/SET OPTIONS
AH = 09h
AL = option byte (see #0234)
DX = port number???
Return: AL = old option byte
SeeAlso: AH=00h"MBBIOS",AH=04h"MBBIOS",AH=10h"FOSSIL"

Bitfields for MBBIOS option byte:
Bit(s) Description (Table 0234)
0 transmit buffering enabled
2 hardware handshaking enabled
5 high-speed option enabled (see AH=00h"MBBIOS",#0199)
other reserved
--------S-1409-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RESET I/O BUFFER POINTERS
AH = 09h
DX = port number
Return: nothing
SeeAlso: AH=13h"PC-MOS"
--------N-1409--DXFFFF-----------------------
INT 14 - Connection Manager - SEND BREAK
AH = 09h
DX = FFFFh
AL = connection ID
Return: AH = return code (00h-02h) (see #0200 at AH=00h/DX=FFFFh)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh
--------S-140A-------------------------------
INT 14 - FOSSIL - PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT
AH = 0Ah
DX = port number
SeeAlso: AH=09h"FOSSIL",AH=85h
--------S-140A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - INPUT QUEUE CHECK
AH = 0Ah
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters available in buffer
Note: this function is also supported by the PC-MOS/386 v5.01 $serial.sys
SeeAlso: AH=09h"Digiboard",AH=0Dh"Digiboard"
--------S-140A-------------------------------
INT 14 - MBBIOS - WRITE BUFFER
AH = 0Ah
CX = count
ES:DI -> buffer (see #0235)
Return: AX = status (see #0201,#0202)
CX = unsent character count
DI updated
Note: the PACCOM version of MBBIOS does not use CX or ES:DI; instead, ES
contains the segment of a buffer containing the packet to be sent,
which by default will be freed once the packet has been sent. Use
AH=0Ch"MBBIOS" to allocate the buffer.
SeeAlso: AH=01h,AH=0Bh"MBBIOS",AH=0Ch"MBBIOS",AH=19h"FOSSIL"

Format of MBBIOS PACCOM buffer:
Offset Size Description (Table 0235)
00h 504 BYTEs data area
1F8h WORD length of data in data area
1FAh BYTE flags/status
bit 7: don't discard buffer after transmitting data
bit 6: buffer has been transmitted
1FBh BYTE reserved (0) for additional flags/status
1FCh WORD user data
1FEh WORD MBBIOS-internal pointer to next buffer
--------N-140A--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY ACTIVE CONNECTION PARAMETERS
AH = 0Ah
DX = FFFFh
ES:DI -> vector string containing new parameters (see #0208)
Return: AH = return code (00h-03h,06h) (see #0200)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Note: any subvectors valid for the Change Parameters command replace the
existing values in the current set
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-140B-------------------------------
INT 14 - FOSSIL - TRANSMIT NO WAIT
AH = 0Bh
AL = character
DX = port number
Return: AX = result
0000h character not accepted
0001h character accepted
SeeAlso: AH=01h
--------S-140B-------------------------------
INT 14 - MBBIOS - READ BUFFER
AH = 0Bh
CX = size of buffer
ES:DI -> buffer
Return: AH = composite line status (see #0201) formed by ORing all statuses
on receive interrupts; bit 0 set if additional characters
available
AL = composite modem status (see #0202) formed by ORing all statuses
CX = number of characters actually read
DI updated
Note: the PACCOM version of MBBIOS does not use CX or ES:DI on call,
instead returning ES set to the segment of the buffer containing a
received packet, or 0000h if no packets available; the buffer may
be freed with AH=0Ch"MBBIOS"
SeeAlso: AH=02h,AH=08h"MBBIOS",AH=0Ah"MBBIOS",AH=0Ch"MBBIOS",AH=18h"FOSSIL"
--------N-140B--DXFFFF-----------------------
INT 14 - Connection Manager - PREPARE FOR INBOUND CONNECTION
AH = 0Bh
DX = FFFFh
AL = service name
00h use parameter file or default
01h use specified name
ES:DI -> 16-byte blank-padded name
BH = connection notification
00h program awaiting connection, don't notify user
01h notify user on connecting
BL = connection type
00h connection will use Connection Manager API
Return: AH = return code (00h-02h) (see #0200 at AH=00h/DX=FFFFh)
AL = connection ID if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=0Ch/DX=FFFFh,AH=10h/DX=FFFFh
--------S-140C-------------------------------
INT 14 - FOSSIL - NON-DESTRUCTIVE READ AHEAD
AH = 0Ch
DX = port number
Return: AX = FFFFh character not available
AX = 00xxh character xx available
SeeAlso: AH=08h"MBBIOS",AH=20h"FOSSIL"
--------S-140C-------------------------------
INT 14 - MBBIOS PACCOM support - BUFFER MANAGEMENT
AH = 0Ch
ES = segment of buffer to free, or 0000h to allocate new buffer
Return: ES = segment of allocated buffer (if ES=0000h on entry)
Note: the PACCOM version of MBBIOS uses only ES as buffer address for
AH=0Ah and AH=0Bh
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------N-140C--DXFFFF-----------------------
INT 14 - Connection Manager - TEST FOR INBOUND CONNECTION REQUEST
AH = 0Ch
DX = FFFFh
AL = connection ID from AH=0Bh/DX=FFFFh
Return: AH = return code (00h-03h) (see also #0200 at AH=00h/DX=FFFFh)
03h not prepared for inbound connection
AL = connection ID (if AH=00h) or correct connection ID (if AH=02h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh
--------S-140D-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITHOUT WAIT
AH = 0Dh
Return: AX = result
FFFFh character not available
xxyyh standard IBM-style scan code
SeeAlso: AH=0Eh
--------S-140D-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET POINTER TO CH_KEY_RDY FLAG
AH = 0Dh
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> CH_KEY_RDY flag (see #0236)
SeeAlso: AH=0Ah"Digiboard"

(Table 0236)
Values for Digiboard CH_KEY_RDY flag:
00h receive buffer empty
FFh characters available
--------S-140D-------------------------------
INT 14 - MBBIOS PACCOM support - SET TXD
AH = 0Dh
AL = new setting (FFh = 1.0)
Desc: specify the time from RTS to start or packet
SeeAlso: AX=0D00h,AH=0Eh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140D--DXFFFF-----------------------
INT 14 - Connection Manager - TERMINATE CONNECTION CLIENT ACTIVITY
AH = 0Dh
DX = FFFFh
Return: AH = return code
00h successful
nonzero operation not terminated
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Desc: end all Connection Client TSR activity to allow it to be removed from
memory
SeeAlso: AH=05h/DX=FFFFh,AH=6Fh/BX=FFFFh
--------S-140D00-----------------------------
INT 14 - MBBIOS - GET AVAILABLE BYTES
AX = 0D00h
Return: AX = bytes in transmit buffer
CX = bytes in receive buffer
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------S-140D01-----------------------------
INT 14 - MBBIOS - LOWER ALL MODEM CONTROL SIGNALS
AX = 0D01h
Note: this function lowers DTR, RTS, etc.
SeeAlso: AX=0D02h
--------S-140D02-----------------------------
INT 14 - MBBIOS - RAISE ALL MODEM CONTROL SIGNALS
AX = 0D02h
Note: this function raises DTR, RTS, etc.
SeeAlso: AX=0D01h
--------S-140D03-----------------------------
INT 14 - MBBIOS - SET HANDSHAKE BYTE
AX = 0D03h
CL = new handshake byte
Return: CL = previous handshake byte
Note: this function lowers DTR, RTS, etc.
--------S-140E-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITH WAIT
AH = 0Eh
Return: AX = xxyyh standard IBM-style scan code
SeeAlso: AH=0Dh"FOSSIL"
--------S-140E-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - WRITE STRING
AH = 0Eh
CX = number of characters to write
ES:BX -> string
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters actually written
ZF clear if successful
ZF set on error
SeeAlso: AH=0Fh"Digiboard"
--------S-140E-------------------------------
INT 14 - MBBIOS PACCOM support - SET PERSISTENCE
AH = 0Eh
AL = new setting (FFh = 1.0)
Desc: specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140E--DXFFFF-----------------------
INT 14 - Connection Manager - SET HARDWARE FLOW STATE
AH = 0Eh
DX = FFFFh
AL = connection ID from AH=04h/DX=FFFFh
BL = RTS state (00h off, 01h on)
Return: AH = return code (00h-03h) (see also #0200 at AH=00h/DX=FFFFh)
03h invalid request (BL not 00h or 01h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-140F-------------------------------
INT 14 - FOSSIL - ENABLE/DISABLE FLOW CONTROL
AH = 0Fh
AL = bit mask describing requested flow control (see #0237)
DX = port number
SeeAlso: AH=09h"MBBIOS",AH=10h"FOSSIL"

Bitfields for FOSSIL requested flow control:
Bit(s) Description (Table 0237)
0 XON/XOFF on transmit (watch for XOFF while sending)
1 CTS/RTS (CTS on transmit/RTS on receive)
2 reserved
3 XON/XOFF on receive (send XOFF when buffer near full)
4-7 all 1
--------S-140F-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - READ STRING
AH = 0Fh
CX = number of characters to read
ES:BX -> buffer
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters read
ZF clear if successful
ZF set on error (line status or wrong number of characters)
SeeAlso: AH=0Eh"Digiboard"
--------S-140F-------------------------------
INT 14 - MBBIOS PACCOM support - SET SLOT TIME
AH = 0Fh
AL = new setting in clock ticks
Desc: specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Eh"MBBIOS",AH=10h"MBBIOS"
--------N-140F--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN ACTIVE CONNECTION PARAMETERS
AH = 0Fh
DX = FFFFh
AL = connection ID
CX = size of buffer or 0000h to get length of returned vector
ES:DI -> buffer for connection parameter vector (see #0208)
Return: AH = return code (00h-02h,06h) (see #0200 at AH=00h/DX=FFFFh)
CX = number of bytes which could not be returned because the given
buffer was too small
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-1410-------------------------------
INT 14 - FOSSIL - EXTENDED ^C/^K CHECKING AND TRANSMIT ON/OFF
AH = 10h
AL = bit mask
bit 0: enable/disable ^C/^K checking
bit 1: enable/disable the transmitter
DX = port number
SeeAlso: AH=0Fh"FOSSIL"
--------S-1410-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR RECEIVE BUFFER
AH = 10h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=09h"Digiboard",AH=11h"Digiboard"
--------S-1410-------------------------------
INT 14 - MBBIOS PACCOM support - SET CRC WAIT
AH = 10h
AL = new setting in clock ticks (should be at least 5 character times)
Desc: specify the time from start of last character to dropping RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-1410--DXFFFF-----------------------
INT 14 - Connection Manager - QUERY SERVICE NAMES
AH = 10h
DX = FFFFh
CL = subfunction
00h search first
01h search next
ES:DI -> pattern buffer (see #0238)
Return: AH = return code (00h,01h,03h,06h) (see also #0200 at AH=00h/DX=FFFFh)
01h no (more) matching names
03h invalid request
ES:DI buffer filled with reply buffer (see #0238) containing matched
name if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
Desc: obtain the names of groups and lines available for connection requests,
and the names of active Connection Servers
SeeAlso: AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh

Format of Connection Manager pattern/reply buffer:
Offset Size Description (Table 0238)
00h WORD length of pattern (30h or 32h)
02h 16 BYTEs server pattern or name
12h 16 BYTEs group pattern or name
22h 16 BYTEs line pattern or name
23h BYTE (optional) ???
24h BYTE (optional, returned) current line status
00h available
01h out of service
02h currently allocated to a connection
Note: pattern may include '?' wildcard to match any character
--------S-1411-------------------------------
INT 14 - FOSSIL - SET CURRENT CURSOR LOCATION
AH = 11h
DH = row
DL = column
Note: this is the same as INT 10/AH=02h
SeeAlso: AH=12h"FOSSIL"
--------S-1411-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR TRANSMIT BUFFER
AH = 11h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=09h"Digiboard",AH=10h"Digiboard"
--------S-1411-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DISABLE PORT
AH = 11h
DX = port number
Return: AL = status
00h successful
01h IRQ for port is shared
02h IRQ was reserved
SeeAlso: AH=04h,AH=05h,AH=12h"PC-MOS"
--------S-1412-------------------------------
INT 14 - FOSSIL - READ CURRENT CURSOR LOCATION
AH = 12h
Return: DH = row
DL = column
Note: this is the same as INT 10/AH=03h
SeeAlso: AH=11h"FOSSIL"
--------S-1412-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET TRANSMIT BUFFER FREE SPACE
AH = 12h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of bytes free
SeeAlso: AH=0Ah"Digiboard",AH=14h"Digiboard"
--------S-1412-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET CURRENT PORT PARAMETERS
AH = 12h
DX = port number
Return: AH = status
FFh port number invalid
AL = line parameters (see #0201)
AH = flow control configuration (see #0233 at AH=05h"PC-MOS")
CX:BX = bps rate
DL = XOFF character or 00h for none
DH = XON character or 00h for none
--------S-1413-------------------------------
INT 14 - FOSSIL - SINGLE CHARACTER ANSI WRITE TO SCREEN
AH = 13h
AL = character
Note: should not be called if it is unsafe to call DOS
SeeAlso: AH=15h
--------S-1413-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - REGISTER A PORT WITH A TERMINAL
AH = 13h
DX = port number
Return: AH = status
FFh port number invalid
else
ES:BX -> BYTE flag (00h buffer empty, FFh buffer contains data)
SeeAlso: AH=17h"PC-MOS"
--------S-1414-------------------------------
INT 14 - FOSSIL - ENABLE OR DISABLE WATCHDOG PROCESSING
AH = 14h
AL = 01h enable watchdog
00h disable watchdog
DX = port number
SeeAlso: INT 21/AH=2Bh/CX=6269h/DX=742Dh
--------S-1414-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT STRING
AH = 14h
CX = number of characters in string
DX = port number
ES:BX -> string to be sent
SI = timeout in timer ticks or 0000h for default
Return: AX = number of bytes actually sent
ZF clear if successful
ZF set on timeout
SeeAlso: AH=01h,AH=15h"PC-MOS"
--------S-1414-------------------------------
INT 14 - Digiboard - GET NUMBER OF BOARDS INSTALLED
AH = 14h
Return: AX = number of boards installed
SeeAlso: AH=08h"Digiboard",AH=15h"Digiboard"
--------S-1415-------------------------------
INT 14 - FOSSIL - WRITE CHARACTER TO SCREEN USING BIOS SUPPORT ROUTINES
AH = 15h
AL = character
SeeAlso: AH=13h"FOSSIL"
--------S-1415-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STRING
AH = 15h
CX = size of buffer
DX = port number
ES:BX -> buffer for received characters
SI = timeout in clock ticks or 0000h for default
Return: AX = number of characters actually read
ZF set on timeout (no data available)
SeeAlso: AH=02h,AH=14h"PC-MOS",AH=16h"PC-MOS"
--------S-1415-------------------------------
INT 14 - Digiboard - ENABLE/DISABLE MEMORY
AH = 15h
AL = new state (00h disabled, 01h enabled)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=14h"Digiboard",AH=16h"Digiboard"
--------S-1416-------------------------------
INT 14 - FOSSIL - INSERT/DELETE FUNCTION FROM TIMER TICK CHAIN
AH = 16h
AL = function
00h = delete
01h = add
ES:DX -> routine to call
Return: AX = status
0000h successful
0001h unsuccessful
SeeAlso: AH=07h"FOSSIL"
--------S-1416-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - LINK TO ANOTHER SERIAL DRIVER
AH = 16h
ES:BX -> calling driver's INT 14 entry point
Return: nothing
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
operating system by The Software Link, Inc.
--------S-1416-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CCB COMMAND
AH = 16h
AL = CCB command number (see #0239) (see also following entries)
BL = byte 2
BH = byte 3
CL = byte 1 (for all channel functions except 4Eh and 4Fh)
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AX=1646h,AH=18h"Digiboard"

(Table 0239)
Values for Digiboard CCB command number:
40h Set Receive Mid Water Mark
41h Set Receive High Water Mark
42h Flush Receive Buffer
43h Flush Transmit Buffer
44h Transmit Pause
45h Transmit Resume
46h Set Interrupt to Host Mask
47h Set Baud, Data, Stop and Parity
48h Send Break
49h Set Modem Lines
4Ah Set Break Count
4Bh Set Handshake
4Ch Set Xon/Xoff Characters
4Dh Set Transmit Mid Water Mark
4Eh IRQ Polling Timer to Host
4Fh Buffer Set All
50h Port On
51h Port Off
52h Receive Pause
53h Special Character Interrupt
54h RS-422 Enable
--------S-141646-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET INTERRUPT TO HOST MASK
AX = 1646h
BL = bits to set
BH = bits to clear
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-141647-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BAUD/DATABITS/STOPBITS/PARITY
AX = 1647h
BL = baud
BH = datatype
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h,AX=1649h
--------S-141649-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET MODEM LINES
AX = 1649h
BL = bits to set
BH = bits to clear
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-14164A-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BREAK COUNT
AX = 164Ah
BL = break count
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Bh
--------S-14164B-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET HANDSHAKE
AX = 164Bh
BL = bits to set
BH = bits to clear
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Ch
--------S-14164C-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET XON/XOFF CHARACTERS
AX = 164Ch
BL = XON character
BH = XOFF character
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=164Bh,AX=164Dh
--------S-14164D-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET TRANSMIT MID-WATER MARK
AX = 164Dh
BX = new mid-water mark
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=164Ch,AX=164Eh,AX=164Fh
--------S-14164E-----------------------------
INT 14 - Digiboard - CCB COMMAND - IRQ POLLING TIMER TO HOST
AX = 164Eh
BL = ticks
BH = ???
CL = mode
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-14164F-----------------------------
INT 14 - Digiboard - CCB COMMAND - BUFFER SET ALL
AX = 164Fh
BL = size
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-141653-----------------------------
INT 14 - Digiboard - CCB COMMAND - SPECIAL CHARACTER INTERRUPT
AX = 1653h
BL = enable/disable
BH = special character
CL = byte 1
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h error
FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h
--------S-1417-------------------------------
INT 14 - FOSSIL - REBOOT SYSTEM
AH = 17h
AL = method
00h = cold boot
01h = warm boot
SeeAlso: INT 19,INT 60/DI=0606h
--------S-1417-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - WRITE MODEM CONTROL REGISTER
AH = 17h
AL = new value for UART's modem control register
DX = port number
Return: nothing
--------S-1418-------------------------------
INT 14 - FOSSIL - READ BLOCK
AH = 18h
CX = maximum number of characters to transfer
DX = port number
ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=19h"FOSSIL",AH=83h"COURIERS",AX=FF02h,INT 6B/AX=0100h
--------S-1418-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND
AH = 18h
ES:BX -> 16-byte command string
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h timeout
AL = mailbox status
00h no errors
8Xh BIOS error
ES:BX buffer filled in with mailbox string
ZF clear if no errors
ZF set if either status byte contains an error code
SeeAlso: AH=16h"Digiboard"
--------S-1418-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET DRIVER DESCRIPTION
AH = 18h
DX = port number
Return: DS:BX -> 40-byte buffer containing a string identifying the serial
driver
SeeAlso: AH=06h"PC-MOS"
--------S-1419-------------------------------
INT 14 - FOSSIL - WRITE BLOCK
AH = 19h
CX = maximum number of characters to transfer
DX = port number
ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=18h"FOSSIL",AH=86h,INT 6B/AX=0000h
--------S-1419-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT
AH = 19h
BL = flag
00h disable special character interrupt
FFh enable interrupt
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh failed
SeeAlso: AH=1Ah"Digiboard"
--------S-1419-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SELECTIVE BUFFER FLUSH
AH = 19h
AL = what to flush
bit 0: input buffer
bit 1: output buffer
DX = port number
Return: nothing
SeeAlso: AH=09h"PC-MOS"
--------S-141A-------------------------------
INT 14 - FOSSIL - BREAK BEGIN OR END
AH = 1Ah
AL = 00h stop sending 'break'
01h start sending 'break'
DX = port number
SeeAlso: AH=06h"FOSSIL",AH=8Ah,AH=FAh
--------S-141A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X - SPECIAL CHARACTER FLAG/COUNTER
AH = 1Ah
BX = subfunction
00h return pointer to special character flag byte
01h return pointer to special character counter word
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> special character flag or counter
Notes: flag is FFh if one or more special characters are in the receive
buffer; it is 00h and the counter is invalid if no special characters
are in the receive buffer
counter (if valid) contains the number of characters in the receive
buffer up to and including the last-received special character
--------S-141B-------------------------------
INT 14 - FOSSIL - RETURN INFORMATION ABOUT THE DRIVER
AH = 1Bh
DX = port number
CX = size of user buffer
ES:DI -> user buffer for driver info (see #0240)
Return: AX = number of characters transferred
CX = 3058h ("0X") (X00 FOSSIL only)
DX = 2030h (" 0") (X00 FOSSIL only)

Format of FOSSIL driver info:
Offset Size Description (Table 0240)
00h WORD size of structure in bytes
02h BYTE FOSSIL spec driver conforms to
03h BYTE revision level of this specific driver
04h DWORD pointer to ASCIZ identification string
08h WORD size of the input buffer
0Ah WORD number of bytes left in buffer
0Ch WORD size of the output buffer
0Eh WORD number of bytes left in buffer
10h BYTE width of screen
11h BYTE length of screen
12h BYTE actual baud rate, computer to modem
--------S-141C-------------------------------
INT 14 - X00 FOSSIL - ACTIVATE PORT
AH = 1Ch
DX = port number
Return: AX = 1954h if successful
BL = maximum function number supported (not including 7Eh and above)
BH = revision of FOSSIL specification supported
Note: this is a duplicate of AH=04h, so that AH=04h may be made compatible
with the PS/2 BIOS in a future release
SeeAlso: AH=04h"FOSSIL",AH=1Dh
--------S-141D-------------------------------
INT 14 - X00 FOSSIL - DEACTIVATE PORT
AH = 1Dh
DX = port number
Return: none
Notes: this is a duplicate of AH=05h, so that AH=05h may be made compatible
with the PS/2 BIOS in a future release
ignored if the port was never activated with AH=04h or AH=1Ch
SeeAlso: AH=05h"FOSSIL",AH=1Ch
--------S-141E-------------------------------
INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
AH = 1Eh
AL = break status
00h if break
01h if no break
BH = parity (see #0241)
BL = number of stop bits
00h one stop bit
01h two stop bits (1.5 if 5 bit word length)
CH = word length (see #0242)
CL = bps rate (see #0243)
DX = port number
Return: AX = port status code (see #0201,#0202)
Notes: this function is intended to exactly emulate the PS/2 BIOS AH=04h call
if the port was locked at X00 load time, the appropriate parameters are
ignored
SeeAlso: AH=00h,AH=04h"SERIAL I/O"

(Table 0241)
Values for X00 FOSSIL parity:
00h no parity
01h odd parity
02h even parity
03h stick parity odd
04h stick parity even
SeeAlso: #0204,#0242,#0243

(Table 0242)
Values for X00 FOSSIL word length:
00h 5 bits
01h 6 bits
02h 7 bits
03h 8 bits
SeeAlso: #0205,#0241,#0243

(Table 0243)
Values for X00 FOSSIL bps rate:
00h 110
01h 150
02h 300
03h 600
04h 1200
05h 2400
06h 4800
07h 9600
08h 19200
SeeAlso: #0206,#0241,#0242
--------S-141E------------------------------------
INT 14 - HUNTER 16 - READ COMMS PARAMETERS
AH = 1Eh
CX = channel number (00h COM1, 01h COM2, ...)
DS:BX -> buffer for communications parameters (see #0244)
Return: DS:BX buffer filled
Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family
members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=20h"HUNTER"

Format of HUNTER 16 communications parameters:
Offset Size Description (Table 0244)
00h BYTE communications type (00h IBM, nonzero Husky)
01h BYTE port number (00h COM1, 01h COM2)
02h BYTE baud rate (00h 110 bps, 01h 150, 02h 300, 03h 600, 04h 1200,
05h 2400, 06h 4800, 07h 9600, 08h 19200, 09h 38400)
03h BYTE data bits (01h seven, 02h eight)
04h BYTE parity (00h none, 01h odd, 02h even)
05h BYTE stop bits (00h one, 01h two)
06h BYTE handshake (see #0245)
07h BYTE handshake protocol (00h none, 01h Xon/Xoff, 02h HWK3780)
08h BYTE Nulls after CR (0-20)
09h BYTE LF (00h off, 01h on)
0Ah BYTE Serig. 0..7Fh: Ignore this character
80h: Serig off
0Bh BYTE echo (00h off, 01h on)
0Ch BYTE transmit timeout in seconds (1-60) or 00h to disable
0Dh BYTE receive timeout in seconds (1-60) or 00h to disable
0Eh 5 BYTEs reserved

Bitfields for HUNTER 16 handshake:
Bit(s) Description (Table 0245)
0-1 0: RTS off, 1: RTS hold, 2: RTS true
2 DTR enabled
4 CTS enabled
5 DSR enabled
6 DCD enabled
--------S-141F-------------------------------
INT 14 - X00 FOSSIL - EXTENDED SERIAL PORT STATUS/CONTROL
AH = 1Fh
AL = 00h read modem control register
Return: BL = modem control register (see #0246)
AH = status
AL = 01h write modem control register
BL = modem control register (see #0246)
Return: AX = status
DX = port number
Notes: this function is intended to exactly emulate the PS/2 BIOS AH=05h call
X00 forces BL bit 3 set (interrupts cannot be disabled)
SeeAlso: AH=00h,AH=05h"SERIAL I/O"

Bitfields for X00 FOSSIL modem control register:
Bit(s) Description (Table 0246)
0 data terminal ready
1 request to send
2 OUT1
3 OUT2 (interrupts) enabled
4 LOOP
5-7 reserved
--------S-1420-------------------------------
INT 14 - X00 FOSSIL - DESTRUCTIVE READ WITH NO WAIT
AH = 20h
DX = port number
Return: AH = 00h if character was available
AL = next character (removed from receive buffer)
AX = FFFFh if no character available
SeeAlso: AH=0Ch,AH=21h"X00"
--------S-1420-------------------------------
INT 14 - Alloy MW386 - ATTACH LOGICAL COMMUNICATIONS PORT TO PHYSICAL PORT
AH = 20h
AL = logical port (01h COM1, 02h COM2)
DX = physical port number
Return: AX = status
0000h successful
FFFFh failed
SeeAlso: AH=21h"Alloy",AH=22h"Alloy",AH=23h"Alloy",INT 17/AH=8Bh"Alloy"
--------S-1420-------------------------------
INT 14 - MultiDOS Plus - INITIALIZE PORT
AH = 20h
AL = port parameters (see #0197 at AH=00h"SERIAL")
DX = port number (0-3)
Return: AH = status
00h successful
41h no such port
64h monitor mode already active
SeeAlso: AH=00h"SERIAL",AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"
--------S-1420-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHECK OUTPUT QUEUE
AH = 20h
DX = port number
Return: AX = number of bytes in output buffer
SeeAlso: AH=0Ah"PC-MOS"
--------S-1420------------------------------------
INT 14 - HUNTER 16 - SELECT COMMS PARAMETERS
AH = 20h
CX = channel number (00h COM1, 01h COM2, ...)
DS:BX -> buffer with communications parameter (see #0244)
Return: AX = status
0000h successful
0001h invalid parameter
SeeAlso: AH=1Eh"HUNTER",AH=21h"HUNTER"
--------S-1421-------------------------------
INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
AH = 21h
AL = character
DX = port number
Notes: the given character is inserted at the end of the receive buffer as if
it had just arrived from the serial port; all normal receive
processing (XON/XOFF, ^C/^K) is performed on the character
fully re-entrant
SeeAlso: AH=20h"X00"
--------S-1421-------------------------------
INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
AH = 21h
DX = physical port number
Return: AX = status
0000h successful
FFFFh failed
SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
--------S-1421-------------------------------
INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
AH = 21h
AL = character to send
DX = port number
Return: AH = status (see #0247)
Note: monitor mode must have been turned on with AH=24h before calling
SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"

(Table 0247)
Values for MultiDOS Plus status:
00h successful
39h no DSR or CTS
3Ch no DSR
3Bh no CTS
41h no such port
42h monitor mode not active
97h timed out
--------S-1421-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT
AH = 21h
AL = char to send
DX = port number
SI = timeout in timer ticks (0000h = default)
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
operating system by The Software Link, Inc.
SeeAlso: AH=01h,AH=0Eh"PC/MOS",AH=22h"PC-MOS"
--------S-1421------------------------------------
INT 14 - HUNTER 16 - EXTENDED CONTROL
AH = 21h
AL = command
01h force transmission of buffer
02h clear transmit buffer
03h clear receive buffer
DX = port (00h COM1, 01h COM2)
Return: AH = extended status
Desc: executes the command on the selected port
SeeAlso: AH=1Eh"HUNTER",AH=20h"HUNTER",AH=22h"HUNTER",AH=24h"HUNTER"
--------S-1422-------------------------------
INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORT
AH = 22h
AL = logical port (01h COM1, 02h COM2)
Return: AX = status (0000h successful)
SeeAlso: AH=20h"Alloy",AH=21h"Alloy"
--------S-1422-------------------------------
INT 14 - MultiDOS Plus - RECEIVE CHARACTER
AH = 22h
DX = port number
Return: AH = status (see also AH=21h"MultiDOS")
00h successful
AL = character
3Dh framing and parity error
3Eh overrun error
3Fh framing error
40h parity error
96h ring buffer overflow
Note: if no character is available, this function waits until a character
arrives or an implementation-dependent timeout elapses
SeeAlso: AH=20h"MultiDOS",AH=21h"MultiDOS",AH=27h
--------S-1422-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RECEIVE CHARACTER, WITH TIMEOUT
AH = 22h
DX = port number
SI = timeout in timer ticks (0000h = default)
Return: AH = port status (see also #0201 at AH=03h)
bit 7 = 1 indicates time-out
AL = character received
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
operating system by The Software Link, Inc.
SeeAlso: AH=02h,AH=0Fh"PC-MOS",AH=21h"PC-MOS"
--------S-1422------------------------------------
INT 14 - HUNTER 16 - EXTENDED STATUS
AH = 22h
DX = port (00h COM1, 01h COM2)
Return: AH = extended status
BX = number of characters in input buffer
CX = number of characters in output buffer
Desc: returns the most recent Extended Status code for the port
SeeAlso: AH=21h"HUNTER"
--------S-1423-------------------------------
INT 14 - Alloy MW386 v2+ - GET PORT NUMBER FROM LOGICAL PORT ID
AH = 23h
AL = logical port (01h COM1, 02h COM2)
DH = user ID
DL = process ID (DH,DL both FFh for current task)
Return: AL = MW386 port mode (see #0248)
CX = MW386 port number
DH = owner's user ID
DL = owner's task ID
SeeAlso: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"

Bitfields for MW386 port mode:
Bit(s) Description (Table 0248)
0 port is shared (spooler only)
1 port is spooled instead of direct (spooler only)
2 port is assigned as logical COM device, not in spooler
3 port is free
--------S-1423-------------------------------
INT 14 - MultiDOS Plus - GET PORT STATUS
AH = 23h
DX = port number
Return: AH = line status (see #0201 at AH=03h)
AL = modem status (see #0202 at AH=03h)
SeeAlso: AH=03h,AH=07h"MultiDOS",AH=20h"MultiDOS"
--------S-1423-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DECLARE PORT OWNERSHIP
AH = 23h
DX = port number
BX = TCB segment/selector address of owner task
Return: nothing
SeeAlso: AH=0Dh"PC-MOS"
--------S-1423------------------------------------
INT 14 - HUNTER 16 - CONTROL HANDSHAKE LINES
AH = 23h
BH = handshake line to set (00h RTS, 01h DTR)
BL = new level (00h low, 01h high)
Desc: sets the handshake lines of COM1 to the desired level
SeeAlso: AH=21h"HUNTER",AH=24h"HUNTER"
--------S-1424-------------------------------
INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORT PARAMETERS
AH = 24h
CX = physical I/O port number
DS:DX -> configuration table (see #0249)
Return: AH = 00h
Note: invalid port numbers are merely ignored
SeeAlso: INT 17/AH=96h

Format of Alloy MW386 configuration table:
Offset Size Description (Table 0249)
00h BYTE baud rate (see #0250)
01h BYTE data bits (00h=5, 01h=6, 02h=7, 03h=8)
02h BYTE parity (00h none, 01h odd, 02h even)
03h BYTE stop bits (00h=1, 01h=2)
04h BYTE receive flow control
00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
05h BYTE transmit flow control (as for receive)

(Table 0250)
Values for Alloy MW386 baud rate:
00h 38400
01h 19200
02h 9600
03h 7200
04h 4800
05h 3600
06h 2400
07h 2000
08h 1200
09h 600
0Ah 300
0Bh 150
0Ch 134.5
SeeAlso: #0206
--------S-1424-------------------------------
INT 14 - MultiDOS Plus - SET MONITOR MODE
AH = 24h
AL = port status storage
00h single status for entire receive buffer
01h separate status kept for each byte in receive buffer
DX = port number
Return: AH = status
00h successful
3Ah invalid status storage specified
41h no such port
64h monitor mode already active
Note: in monitor mode, MultiDOS redirects all BIOS video output to a serial
port
SeeAlso: AH=20h"MultiDOS",AH=25h
--------S-1424-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - ???
AH = 24h
Return: ???
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
operating system by The Software Link, Inc.
--------S-1424------------------------------------
INT 14 - HUNTER 16 - CONTROL CTS HANDSHAKING
AH = 24h
AL = new CTS handshake state for COM1 (00h disabled, 01h enabled)
SeeAlso: AH=23h"HUNTER",AH=25h"HUNTER",AH=26h"HUNTER"
--------S-1425-------------------------------
INT 14 - MultiDOS Plus - CLEAR BUFFERS
AH = 25h
AL = function
00h only clear buffers
01h clear buffers and deactivate
DX = port number
Return: AH = status
00h successful
3Ah invalid function
41h no such port
42h monitor mode not active
SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
--------S-1425------------------------------------
INT 14 - HUNTER 16 - CONTROL RS232 DRIVERS
AH = 25h
AL = new state of RS232 drivers (00h off, 01h on)
Note: this function can be used to save power by turning off the RS232
drivers. It can also be used to turn on the RS232 drivers before
connecting to a remote system to avoid "garbage" while the drivers
turn on.
SeeAlso: AH=23h"HUNTER",AH=24h"HUNTER",AH=26h"HUNTER"
--------S-1426------------------------------------
INT 14 - HUNTER 16 - CONTROL RI POWER UP
AH = 26h
AL = 00h enable RI power up
else disable RI power up
Desc: control whether the Ring Indicator handshake can power up the Hunter
--------S-1427-------------------------------
INT 14 - MultiDOS Plus - GET BUFFER CHARACTER COUNT
AH = 27h
DX = port number
Return: AH = status
00h successful
41h no such port
42h monitor mode not active
AL = number of characters in receive buffer
--------S-1427------------------------------------
INT 14 - HUNTER 16 - GET INSTALLED PROTOCOLS COUNT
AH = 27h
AL = number of extended protocols installed (since last call)
Return: AL = total number installed, including new ones
Desc: Returns the number of extended communication protocols installed
SeeAlso: AH=25h"HUNTER",AH=28h"HUNTER"
--------S-1428------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL NAME
AH = 28h
AL = protocol handle
DS:BX -> 8 character buffer for protocol name
Return: AH = status
00h successful
DS:BX buffer filled with the protocol name
FFh failed
SeeAlso: AH=27h"HUNTER",AH=29h"HUNTER"
--------S-1429------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL HANDLE
AH = 29h
DS:BX -> buffer containing the protocol name
Return: AH = status
00h successful
AL = handle
FFh failed
SeeAlso: AH=28h"HUNTER",AH=2Ah"HUNTER"
--------S-142A------------------------------------
INT 14 - HUNTER 16 - EXTENDED PROTOCOL MENU
AH = 2Ah
AL = protocol handle
Return: AH = status
00h successful
FFh failed
AL = menu handle
SeeAlso: AH=29h"HUNTER",AH=2Bh"HUNTER"
--------S-142B------------------------------------
INT 14 - HUNTER 16 - GET EXTENDED PROTOCOL PARAMETERS
AH = 2Bh
AL = protocol handle
DS:BX -> buffer for extended protocol parameters
Return: AH = status
00h successful
DS:BX buffer filled with extended parameters
FFh failed
SeeAlso: AH=2Ah"HUNTER"
--------S-142C00----------------------------------
INT 14 - HUNTER 16 - GET DTR
AX = 2C00h
Return: AH = 00h
BL = current state
00h normal DTR operation
else DTR is forced high
Desc: Indicates whether the DTR signal on COM1 is forced high
Note: the Husky Hunter 16 is an 8088-based ruggedized laptop. Other family
members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=2Ch"SET DTR"
--------S-142C------------------------------------
INT 14 - HUNTER 16 - SET DTR
AH = 2Ch
AL nonzero
BL = new state
00h normal operation
else force DTR high
Return: AH = 00h
Desc: determine whether the DTR signal on COM1 should be forced high
SeeAlso: AX=2C00h
----------1436-------------------------------
INT 14 - ComShare - INSTALLATION CHECK
AH = 36h
Return: AX = 4353h ('CS') if installed
BX = bitmap of installed ports (bit 0: COM1 is gateway, etc.)
CX reserved for future use
WORD DX:[0100h] = ComShare version number
Program: The ComShare System is a modem-sharing program for NetBIOS and
NetWare-based networks by NashaKala Corporation
Note: ComShare supports the standard BIOS INT 14h calls with a slight
change in the interpretation of speed values (see #0206 at AH=04h)
SeeAlso: AH=00h,AH=04h,AX=F4FFh
--------S-1456-------------------------------
INT 14 U - BWCOM14 - INSTALLATION CHECK
AH = 56h
Return: CX = 0001h if installed
Program: BWCOM14 is a network serial port emulator (simulating a Hayes modem
connected to the serial port) distributed as part of the
Beame&Whiteside BW-NFS package
SeeAlso: AH=57h,AH=58h,INT 2F/AX=DF00h/BX=5445h
--------S-1457-------------------------------
INT 14 U - BWCOM14 - INITIALIZE
AH = 57h
DL = port number
Return: AL = initialization status (00h successful, 01h already initialized)
CX = port status (0001h port redirected, 0002h and FFFFh failed)
Note: after this call, all invocations of INT 14/AH=00h-03h for the specified
port will be handled by BWCOM14 until AH=58h is called
SeeAlso: AH=00h"SERIAL",AH=56h,AH=58h
--------S-1458-------------------------------
INT 14 U - BWCOM14 - SHUTDOWN
AH = 58h
Return: CX = status (0001h successful, 0002h not initialized)
Note: after this call, BWCOM14 will no longer redirect the COM port
SeeAlso: AH=56h,AH=57h
--------N-146F--BXFFFE-----------------------
INT 14 U - Connection Manager - ???
AH = 6Fh
BX = FFFEh
???
Return: ???
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
serial ports over an IPX or NetBIOS-based network
--------N-146F--BXFFFF-----------------------
INT 14 - Connection Manager - INSTALLATION CHECK
AH = 6Fh
BX = FFFFh
Return: DX:BX -> Connection Manager Communication Table if installed
BX = FFFFh if not installed
SeeAlso: AH=0Dh/DX=FFFFh
--------S-146F00-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_INQUIRE" - INSTALLATION CHECK
AX = 6F00h
BX <> 4850h (usually set to 0000h for simplicity)
Return: BX = 4850h ("HP") if HP Extended BIOS serial port extensions available
AX destroyed
Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,INT 10/AX=6F00h,INT 14/AX=6F00h
SeeAlso: INT 17/AX=6F00h,INT 33/AX=6F00h
--------S-146F01-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_EXINIT" - INITIALIZE SERIAL PORT
AX = 6F01h
BX = port attributes (see #0251)
DX = port number (0-3)
Return: AH = line status (see #0201)
AL = modem status (see #0202)
Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F00h

Bitfields for HP Vectra Extended BIOS serial port attributes:
Bit(s) Description (Table 0251)
8-5 data rate (110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200)
4-3 parity
00 none
01 odd
10 none
11 even
2 stop bits (0 = one, 1 = two)
1-0 bits per character
10 seven-bit characters
11 eight-bit characters
0x undefined
--------S-146F02-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_PUT_BUFFER" - TRANSMIT BUFFER
AX = 6F02h
CX = number of characters in buffer
DX = port number (0-3)
ES:DI -> buffer containing characters
Return: AH = line status (see #0201)
AL = modem status (see #0202)
CX = number of bytes actually sent
ES:DI -> next byte to be transferred (unchanged if all bytes sent)
Desc: send characters from the specified buffer until all characters have
been sent or an error/timeout is encountered
Note: supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F00h,AX=6F03h,AX=6F04h,INT 17/AX=6F02h
--------S-146F03-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_GET_BUFFER" - READ DATA INTO BUFFER
AX = 6F03h
CX = size of buffer
DX = port number (0-3)
ES:DI -> buffer for received characters
Return: AH = line status (see #0201)
---on error (AH bit 7 set)---
AL = 00h
ES:DI -> next byte to be transferred
---if successful---
AL = last byte read
ES:DI unchanged
CX = number of bytes read
Desc: read characters into the specified buffer until the buffer is filled
or a timeout occurs
Notes: supported by original HP Vectra AT and by ES/QS/RS series Vectras
polls the Data Set Ready modem status and Data Ready line status bits
to determine when characters are available
SeeAlso: AX=6F00h,AX=6F02h,AX=6F04h
--------S-146F04-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_TRM_BUFFER" - READ UNTIL TERMINATOR
AX = 6F04h
BL = lowest termination character
BH = highest termination character
CX = size of buffer
DX = port number (0-3)
ES:DI -> buffer for received characters
Return: AH = line status (see #0201)
---on error (AH bit 7 set)---
AL = 00h
ES:DI -> next byte to be transferred
---if successful---
AL = last byte read
ES:DI unchanged
CX = number of bytes read
Desc: read characters into the specified buffer until the buffer is filled,
a character in the specified range is received, or a timeout occurs
Notes: supported by original HP Vectra AT and by ES/QS/RS series Vectras
polls the Data Set Ready modem status and Data Ready line status bits
to determine when characters are available
SeeAlso: AX=6F00h,AX=6F02h,AX=6F03h
--------S-147E-------------------------------
INT 14 - FOSSIL - INSTALL AN EXTERNAL APPLICATION FUNCTION
AH = 7Eh
AL = code assigned to external application (80h-BFh)
80h reserved for communications FOSSIL
81h video FOSSIL
82h reserved for keyboard FOSSIL
83h reserved for system FOSSIL
ES:DX -> entry point
Return: AX = 1954h
BL = code assigned to application (same as input AL)
DH = 00h failed
01h successful
SeeAlso: AH=7Fh,AH=80h"FOSSIL",AX=8100h,AH=82h"FOSSIL",AH=83h"FOSSIL"
--------S-147F-------------------------------
INT 14 - FOSSIL - REMOVE AN EXTERNAL APPLICATION FUNCTION
AH = 7Fh
AL = code assigned to external application
ES:DX -> entry point
Return: AX = 1954h
BL = code assigned to application (same as input AL)
DH = 00h failed
01h successful
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COMMUNICATIONS FOSSIL
AH = 80h
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COURIERS.COM - INSTALLATION CHECK
AH = 80h
Return: AH = E8h if loaded
Program: COURIERS is a TSR utility by PC Magazine
--------S-148000-----------------------------
INT 14 - ARTICOM - INSTALLATION CHECK
AX = 8000h
Return: AL = FFh if installed
BH = major version
BL = minor version
Program: ArtiCom is an asynchronous communications driver by Artisoft which
works on top of NetBIOS and allows modem/serial-port sharing by
programs using INT 14 for serial I/O.
Note: ArtiCom supports 32 simultaneous COM ports using multiport cards and
drivers
SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=05h,AX=8001h,AX=8002h
--------S-148000-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET ERROR CODE AND BUFFER STATUS
AX = 8000h
DX = port number
Return: AX = code for last error (see #0252)
BX = number of characters in output buffer
CX = nubmer of characters in input buffer
DX = state flag (see #0253)
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
SeeAlso: AX=8001h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"

(Table 0252)
Values for COMM-DRV error code:
00h no error
01h buffer not set or attempted to change buffer for active port
02h port not active
03h transmit buffer full
04h receive buffer full
05h syntax error
06h invalid buffer size
07h invalid port
08h handler changed
09h invalid baud rate
0Ah invalid parity setting
0Bh invalid data length
0Ch invalid number of stop bits
0Dh invalid protocol number
0Eh IRQ changed
0Fh port changged
10h invalid threshold setting
11h invalid IRQ number
12h interrupts not enabled
13h invalid break syntax
14h fatal error
15h CTS error
16h invalid RS232 I/O port address
17h environment variable not set
18h error on IOCTL call
19h error during atexit cleanup
1Ah error mapping for direct calls
1Bh error opening device
1Ch unable to allocate memory
1Dh error on external micro card
1Eh card changed error
1Fh card type error
20h not supported
21h parent port error
22h card command buffer full
23h no subdevice for this port
24h unknown error
25h external card busy
26h no more timers available
27h INT 14 vector changed

28h INT 08 vector changed
29h DPMI error
2Ah TSR buffer too small (or nonexistent)
2Bh out of asynchronous resources
2Ch out of timer resources
2Dh out of "other" timer resources
2Eh file I/O error
2Fh hardware memory > 64K

Bitfields for state flag :
Bit(s) Description (Table 0253)
0 port is active
1 output throttled (XOFF received, or DSR or CTS reset)
2 input throttled (XOFF sent, or DTR or RTS reset)
--------S-148001-----------------------------
INT 14 - ARTICOM - UNLOAD ASYNCHRONOUS REDIRECTOR FROM MEMORY
AX = 8001h
Return: AX = error code, if error (see #0255)
SeeAlso: AX=8000h"ARTICOM",AX=8002h"ARTICOM",AX=8003h"ARTICOM"
Index: uninstall;ARTICOM
--------S-148001-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
AX = 8001h
DX = port number
Return: BX:DI -> Port Control Block (see #0262)
SeeAlso: AX=8000h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148002-----------------------------
INT 14 - ARTICOM - GET ASYNCHRONOUS REDIRECTOR STATUS
AX = 8002h
ES:DI -> buffer for redirector status structure (see #0254)
Return: AX = error code, if error (see #0255)
SeeAlso: AX=8000h"ARTICOM",AX=8003h"ARTICOM"

Format of ARTICOM redirector status:
Offset Size Description (Table 0254)
00h WORD redirector major and minor version numbers
02h WORD redirectable ports found
04h WORD redirectable ports + local ports found
06h WORD redirector internal buffer size
08h WORD maximum servers maintained
0Ah WORD number of adapters found
--------S-148002-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
AX = 8002h
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
BX:DI -> Port Control Block (see #0262) (modifyable portion only)
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148003-----------------------------
INT 14 - ARTICOM - TRANSLATE ERROR CODE TO ERROR STRING
AX = 8003h
CX = error number to translate (see #0255)
Return: ES:DI -> ASCIZ error text or 0000h:0000h if unable to translate
SeeAlso: AX=8000h

(Table 0255)
Values for ARTICOM error codes:
00h "No error"
01h "An invalid port number was specified"
02h "Port is already redirected"
03h "Too many ports redirected"
04h "Cannot locate the server"
05h "Server is busy"
06h "Access denied"
07h "Resource in use"
08h "Resource in use - request queued"
09h "No such resource"
0Ah "Invalid username/password pair"
0Bh "Noncompatible version number"
0Ch "Can't remove from memory"
0Dh "Bad NETBIOS adapter number"
0Eh "No more entries in list"
0Fh "Resource is not available at this time"
10h "Invalid value to INT 14 call"
--------S-148003-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET I/O BUFFER SIZES
AX = 8003h
DX = port number
Return: AX = number of characters in input buffer
BX = input buffer size
CX = number of characters in output buffer
DX = output buffer size
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"
--------S-148004-----------------------------
INT 14 - ARTICOM - ATTACH ASYNCHRONOUS RESOURCE
AX = 8004h
DX = port to redirect (COM1=0, COM2=1, ...)
CH = attach type
CL = adapter to use for attach, 0FFh to search all
ES:DI -> attachment structure (see #0256)
Return: AX = error code, if error (see #0255)
Note: The wildcard '*' is supported in the server and resource fields. If
wild cards are used then the first matching available server is
attached.
SeeAlso: AX=8000h,AX=8003h,AX=8005h

Format of ARTICOM attachment structure:
Offset Size Description (Table 0256)
00h 16 BYTEs server to look for attach
10h 16 BYTEs attach to resource name
20h 16 BYTEs username for attach
30h 16 BYTEs password for username or resource
40h BYTE attach type
00h normal
01h queue if resource is in use (not yet supported in v1.00)
--------S-148005-----------------------------
INT 14 - ARTICOM - DETACH ASYNCHRONOUS RESOURCE
AX = 8005h
DX = port to detach (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #0255)
Note: only a previously attached resource can be detached
SeeAlso: AX=8000h,AX=8003h,AX=8004h
--------S-148006-----------------------------
INT 14 - ARTICOM - GET RESOURCE INFORMATION
AX = 8006h
BX = remote port (COM1=0, COM2=1, ...)
CL = adapter number, FFh to try all adapters
ES:DI -> resource information structure (see #0257)
DS:SI -> 16 byte server name. See note.
Return: AX = error code, if error (see #0255)
BX = next remote port, recall to get next resource info
Note: Wild cards supported in both the resource field and server name
string DS:SI. If wild cards used then first matching available
resource information is searched. Set the resource field to FFh to
return all resources.
SeeAlso: AX=8000h,AX=8002h,AX=8003h,AX=8007h

Format of ARTICOM resource information structure:
Offset Size Description (Table 0257)
00h BYTE 00h = free, else used
01h 16 BYTEs resource name
11h 16 BYTEs username of resource user
21h WORD amount of time used
23h WORD amount of time remaining
53h 48 BYTEs description of resource
93h 64 BYTEs initialization string for modem
B3h 32 BYTEs dial string for modem
D3h 32 BYTEs hang-up string for modem
--------S-148007-----------------------------
INT 14 - ARTICOM - GET REDIRECTED PORT INFORMATION
AX = 8007h
DX = port index (COM1=0, COM2=1, ...)
ES:DI -> buffer for port information structure (see #0258)
Return: CF clear if redirection info returned and port is redirected
CF set if not a redirected port
AX = error code, if error (see #0255)
SeeAlso: AX=8000h,AX=8003h,AX=8006h,AX=8008h

Format of ARTICOM port information structure:
Offset Size Description (Table 0258)
00h 16 BYTEs server name resource is on
10h BYTE adapter number server is on
11h 16 BYTEs resource name
21h WORD remote port index, use to get additional information
23h WORD buffer size
25h WORD baud rate (see #0259)
26h BYTE modem status register
27h BYTE modem control register
28h BYTE line status register
29h BYTE line control register
2Ah BYTE flow control in use: 0 - NONE, 1 - XON/XOFF, 2 - RTS/CTS
2Bh WORD send timeout in ticks
2Dh WORD receive timeout in ticks
2Fh WORD time used on remote port
31h WORD time left before timeout
33h BYTE if server changes allowed?
34h WORD FFFFh (-1) if connection ok, else old port index

(Table 0259)
Values for ARTICOM baud rate:
00h 110
01h 150
02h 300
03h 600
04h 1200
05h 2400
06h 4800
07h 9600
08h 19200
09h 38400
0Ah 57600
0Bh 115200
0Ch 134.5
0Dh 1800
0Eh 2000
0Fh 3600
10h 7200
SeeAlso: #0206
--------S-148008-----------------------------
INT 14 - ARTICOM - GET AVAILABLE SERVER NAME
AX = 8008h
BX = server index (0,1,...)
ES:DI -> server name structure (see #0260)
Return: AX = error code, if error (see #0255)
BX = next remote port, repeat call to get next available server
Note: the wildcard '*' is supported in the server name field. Set the
server name to FFh to search for all servers.
SeeAlso: AX=8000h,AX=8003h,AX=8007h

Format of ARTICOM server name structure:
Offset Size Description (Table 0260)
00h 16 BYTEs (call) ASCIZ server name
10h BYTE (ret) the adapter server is found
--------S-148009-----------------------------
INT 14 - ARTICOM - SET SEND AND RECEIVE TIMEOUTS
AX = 8009h
BX = send timeout in ticks
CX = receive timeout in ticks
DX = port index (COM1=0, COM2=1, ...)
Return: nothing
SeeAlso: AX=8000h,AX=800Ah
--------S-14800A-----------------------------
INT 14 - ARTICOM - MODIFY FLOW CONTROL
AX = 800Ah
BL = flow control type (00h none, 01h XON/XOFF, 02h RTS/CTS)
DX = port index (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #0255)
Note: for attached ports only!
SeeAlso: AX=8000h,AX=8003h,AX=8009h
--------S-148025-----------------------------
INT 14 - ARTICOM - SET INTERNAL SEND/RECEIVE VECTOR
AX = 8025h
DS:DX -> address of trap function (see #0261) to call on read/write
Note: setting the vector to a user function allows the redirector's activity
to be monitored.
SeeAlso: AX=8000h,AX=8035h,INT 21/AH=25h

(Table 0261)
Values ARTICOM trap function is called with:
AH = operation
80h reading character
81h writing character
AL = character
Return: AX must be preserved
far JUMP to old trap function (see AX=8035h)
--------S-148035-----------------------------
INT 14 - ARTICOM - GET INTERNAL SEND/RECEIVE VECTOR
AX = 8035h
Return: ES:BX -> address of current send/receive routine
Note: this function returns the address of the routine which is called
inside A-REDIR.EXE each time a character is received or sent on the
active COM port.
SeeAlso: AX=8000h,AX=8025h,INT 21/AH=35h
--------S-1481-------------------------------
INT 14 - COURIERS.COM - CHECK IF PORT BUSY
AH = 81h
AL = port number (1-4)
Return: AH = 00h port available
01h port exists but already in use
02h port nonexistent
Program: COURIERS is a TSR utility by PC Magazine
SeeAlso: AH=83h,AH=8Dh
--------S-1481-------------------------------
INT 14 - COMM-DRV - EXTENDED INITIALIZATION
AH = 81h
BX:DI -> port control block (see #0262)
DX = port number
Return: AH = line status register (see #0201)
error if bit 7 set
AL = modem status register (see #0202)
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
Note: AX=8001h should be called first to fill in the port control block
SeeAlso: AH=00h,AX=8001h,AH=82h"COMM-DRV",AH=86h"COMM-DRV"

Format of COMM-DRV port control block:
Offset Type Description (Table 0262)
00h WORD port IO address
02h WORD port IRQ
04h WORD baud rate
06h WORD parity
08h WORD data bits
0Ah WORD stop bits
0Ch WORD break status (0000h off)
0Eh WORD flow control protocol
10h BYTE input block
11h BYTE output block
12h WORD low threshold
14h WORD high threshold
16h WORD segment of buffer
18h WORD offset of buffer
1Ah WORD input buffer length
1Ch WORD output buffer length
1Eh BYTE auxiliary address
1Fh BYTE spare
20h 4 WORDs spares
--------V-148100-----------------------------
INT 14 - VIDEO FOSSIL - RETURN VFOSSIL INFORMATION
AX = 8100h
ES:DI -> buffer for VFOSSIL information (see #0263)
Return: AX = 1954h if installed
SeeAlso: AH=7Eh,AX=8101h

Format of VFOSSIL information:
Offset Size Description (Table 0263)
00h WORD size of information in bytes, including this field
02h WORD VFOSSIL major version
04h WORD VFOSSIL revision level
06h WORD highest VFOSSIL application function supported
--------V-148101-----------------------------
INT 14 - VIDEO FOSSIL - OPEN VFOSSIL
AX = 8101h
ES:DI -> buffer for application function table (see #0264)
CX = length of buffer in bytes
Return: AX = 1954h if installed
BH = highest VFOSSIL application function supported
Note: the number of initialized pointers in the application function table
will never exceed CX/4; if the buffer is large enough, BH+1 pointers
will be initialized
SeeAlso: AX=8102h

Format of VFOSSIL application function table:
Offset Size Description (Table 0264)
00h DWORD -> function to query current video mode (VioGetMode)(see #0269)
04h DWORD -> function to set video mode (VioSetMode) (see #0270)
08h DWORD -> function to query hardware config (VioGetConfig) (see #0271)
0Ch DWORD -> function to write data in TTY mode (VioWrtTTY) (see #0272)
10h DWORD -> function to get current ANSI state (VioGetANSI) (see #0273)
14h DWORD -> function to set new ANSI state (VioSetANSI) (see #0274)
18h DWORD -> function to get curr cursor position (VioGetCurPos)
(see #0275)
1Ch DWORD -> function to set cursor position (VioSetCurPos) (see #0276)
20h DWORD -> function to get cursor shape (VioGetCurType) (see #0277)
24h DWORD -> function to set cursor shape (VioSetCurType) (see #0278)
28h DWORD -> function to scroll screen up (VioScrollUp) (see #0279)
2Ch DWORD -> function to scroll screen down (VioScrollDn) (see #0280)
30h DWORD -> function to read cell string from screen (VioReadCellStr)
(see #0281)
34h DWORD -> function to read char string from screen (VioReadCharStr)
(see #0282)
38h DWORD -> function to write a cell string (VioWrtCellStr)
(see #0283)
3Ch DWORD -> function to write char string, leaving attr (VioWrtCharStr)
(see #0284)
40h DWORD -> function to write char string,const attr (VioWrtCharStrAttr)
(see #0285)
44h DWORD -> function to replicate an attribute (VioWrtNAttr)
(see #0286)
48h DWORD -> function to replicate a cell (VioWrtNCell)
(see #0287)
4Ch DWORD -> function to replicate a character (VioWrtNChar)
(see #0288)

Format of VFOSSIL video mode data structure:
Offset Size Description (Table 0265)
00h WORD length of structure including this field
02h BYTE mode characteristics
bit 0: clear if MDA, set otherwise
bit 1: graphics mode
bit 2: color disabled (black-and-white)
03h BYTE number of colors supported (1=2 colors, 4=16 colors, etc)
04h WORD number of text columns
06h WORD number of text rows
08h WORD reserved
0Ah WORD reserved
0Ch DWORD reserved

Format of VFOSSIL video configuration data:
Offset Size Description (Table 0266)
00h WORD structure length including this field
02h WORD adapter type
00h monochrome/printer
01h CGA
02h EGA
03h VGA
07h 8514/A
04h WORD display type
00h monochrome
01h color
02h enhanced color
09h 8514
06h DWORD adapter memory size

Format of VFOSSIL cursor type record:
Offset Size Description (Table 0267)
00h WORD cursor start line
02h WORD cursor end line
04h WORD cursor width (always 01h)
06h WORD cursor attribute (FFFFh = hidden)

(Table 0268)
Values for VFOSSIL error code:
0000h successful
0074h internal VIO failure
0163h unsupported mode
0166h invalid row value
0167h invalid column value
017Eh buffer too small
01A5h invalid VIO parameter
01B4h invalid VIO handle

(Table 0269)
Call VioGetMode with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video mode data structure (see #0265)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #0268)
SeeAlso: #0270

(Table 0270)
Call VioSetMode with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video mode data structure (see #0265)
Return: AX = error code (00h, 74h, 163h, 17Eh, 1A5h, 1B4h) (see #0268)
SeeAlso: #0269

(Table 0271)
Call VioGetConfig with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video configuration data buffer (see #0266)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #0268)

(Table 0272)
Call VioWrtTTY with:
STACK: WORD VIO handle (must be 00h)
WORD length of string
DWORD pointer to character string to be written to screen
Return: AX = error code (00h, 74h, 1B4h) (see #0268)
Notes: write wraps at end of line and terminates if it reaches end of screen
in ANSI mode, ANSI control sequences are interpreted, and this func is
not required to be reentrant; in non-ANSI mode, the function is
reentrant and may be called from within an MS-DOS function call

(Table 0273)
Call VioGetANSI with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD which will be set to 00h if ANSI is off
or 01h if ANSI is on
Return: AX = error code (00h, 74h, 1B4h) (see #0268)
SeeAlso: #0274

(Table 0274)
Call VioSetANSI with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD indicating new state of ANSI
00h off, 01h on
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #0268)
SeeAlso: #0273

(Table 0275)
Call VioGetCurPos with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD to hold current cursor column (0-based)
DWORD pointer to WORD to hold current cursor row (0-based)
Return: AX = error code (00h, 74h, 1B4h) (see #0268)
SeeAlso: #0276

(Table 0276)
Call VioSetCurPos with:
STACK: WORD VIO handle (must be 00h)
WORD cursor column
WORD cursor row
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: if either coordinate is invalid, the cursor is not moved
SeeAlso: #0275

(Table 0277)
Call VioGetCurType with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to cursor type record (see #0267)
Return: AX = error code (00h, 74h, 1B4h) (see #0268)
SeeAlso: #0278

(Table 0278)
Call VioSetCurType with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to cursor type record (see #0267)
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #0268)
SeeAlso: #0279

(Table 0279)
Call VioScrollUp with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to char/attr cell for filling emptied rows
WORD number or rows to scroll (FFFFh = clear area)
WORD right column of scroll area
WORD bottom row of scroll area
WORD left column of scroll area
WORD top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
SeeAlso: #0280,INT 10/AH=06h

(Table 0280)
Call VioScrollDn with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to char/attr cell for filling emptied rows
WORD number or rows to scroll (FFFFh = clear area)
WORD right column of scroll area
WORD bottom row of scroll area
WORD left column of scroll area
WORD top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
SeeAlso: #0279,INT 10/AH=07h

(Table 0281)
Call VioReadCellStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start reading
WORD row at which to start reading
DWORD pointer to WORD containing length of buffer in bytes
on return, WORD contains number of bytes actually read
DWORD pointer to buffer for cell string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #0268)

(Table 0282)
Call VioReadCharStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start reading
WORD row at which to start reading
DWORD pointer to WORD containing length of buffer in bytes
on return, WORD contains number of bytes actually read
DWORD pointer to buffer for character string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #0268)

(Table 0283)
Call VioWrtCellStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD length of cell string in bytes
DWORD pointer to cell string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen

(Table 0284)
Call VioWrtCharStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD length of character string
DWORD pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen

(Table 0285)
Call VioWrtCharStrAttr with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to attribute to be applied to each character
WORD column at which to start writing
WORD row at which to start writing
WORD length of character string
DWORD pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen

(Table 0286)
Call VioWrtNAttr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write attribute
DWORD pointer to display attribute to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen

(Table 0287)
Call VioWrtNCell with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write cell
DWORD pointer to cell to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen

(Table 0288)
Call VioWrtNChar with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write character
DWORD pointer to character to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0268)
Note: write wraps at end of line and terminates if it reaches end of screen
--------V-148102-----------------------------
INT 14 - VIDEO FOSSIL - CLOSE VFOSSIL
AX = 8102h
Return: AX = 1954h
Note: terminates all operations; after this call, the video FOSSIL may either
be removed from memory or reinitialized
SeeAlso: AX=8101h,AX=8103h
--------V-148103-----------------------------
INT 14 - VIDEO FOSSIL - UNINSTALL
AX = 8103h
Return: AX = 1954h
Note: this is an extension to the VFOSSIL spec by Bob Hartman's VFOS_IBM
--------K-1482-------------------------------
INT 14 - KEYBOARD FOSSIL
AH = 82h
SeeAlso: AH=7Eh
--------S-1482-------------------------------
INT 14 - COURIERS.COM - CONFIGURE PORT
AH = 82h
AL = port number (1-4)
BX = speed (bps)
CX = bit flags
bit 0: enable input flow control
bit 1: enable output flow control
bit 2: use X.PC protocol (not yet implemented)
SeeAlso: AH=00h,AH=8Ch,INT 7A"X.PC"
--------S-1482-------------------------------
INT 14 - COMM-DRV v14.0 - PORT CLEANUP
AH = 82h
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
Desc: reset the port to its state before the AH=81h initialization and unhook
any interrupts used by the port
SeeAlso: AH=81h"COMM-DRV",AH=83h"COMM-DRV"
----------1483-------------------------------
INT 14 - SYSTEM FOSSIL
AH = 83h
SeeAlso: AH=7Eh
--------S-1483-------------------------------
INT 14 - COURIERS.COM - START INPUT
AH = 83h
ES:BX -> circular input buffer
CX = length of buffer
(should be at least 128 bytes if input flow control enabled)
SeeAlso: AH=18h,AH=87h,AH=8Dh,AH=A5h"BAPI"
--------S-1483-------------------------------
INT 14 - COMM-DRV v14.0 - FLUSH COMMUNICATION BUFFERS
AH = 83h
DX = port number
AL = subfunction
00h flush input buffer
01h flush output buffer
02h flush both buffers
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AH=81h"COMM-DRV",AH=84h"COMM-DRV"
--------S-1484-------------------------------
INT 14 - COURIERS.COM - READ CHARACTER
AH = 84h
Return: ZF set if no characters available
ZF clear
AL = character
AH = modem status bits
bit 7: set on input buffer overflow
SeeAlso: AH=02h,AH=86h,AH=89h
--------S-1484-------------------------------
INT 14 - COMM-DRV v14.0 - SEND PACKET
AH = 84h
CX = packet length in bytes
DX = port number
ES:DI -> packet to be sent
Return: AH = line status (see #0201)
bit 7 set on error
AL destroyed
SeeAlso: AH=83h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
--------S-1485-------------------------------
INT 14 - COURIERS.COM - FLUSH PENDING INPUT
AH = 85h
SeeAlso: AH=0Ah,AH=88h"COURIERS"
--------S-1485-------------------------------
INT 14 - COMM-DRV v14.0 - RECEIVE PACKET
AH = 85h
CX = length of packet in bytes
DX = port number
ES:DI -> buffer for packet
Return: AH = line status (see #0201)
bit 7 set on error
AL destroyed
Note: this call requires that at least the requested number of bytes are
already present in the input buffer, and will fail if there are
fewer bytes available
SeeAlso: AH=84h"COMM-DRV",AH=86h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1486-------------------------------
INT 14 - COURIERS.COM - START OUTPUT
AH = 86h
ES:BX -> output buffer
CX = length of output buffer
SeeAlso: AH=19h,AH=83h"COURIERS",AH=A4h"BAPI"
--------S-1486-------------------------------
INT 14 - COMM-DRV v14.0 - SET INPUT/OUTPUT TIMEOUTS
AH = 86h
BL = maximum clock ticks to wait before signalling error on input func
BH = maximum clock ticks to wait before signalling error on output
DX = port number
SI = input timeout in clock ticks if BL=FFh and BH=FFh
DI = output timeout in clock ticks if BL=FFh and BH=FFh
Return: AH bit 7 set on error
AH bit 7 clear if successful
Note: functions 02h, 85h, and 8Eh will wait for the input timeout before
returning an error when no data is available; functions 01h and 84h
will wait for the output timeout before returning an error if there
is no space to output the data
SeeAlso: AH=01h,AH=02h,AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1487-------------------------------
INT 14 - COURIERS.COM - OUTPUT STATUS
AH = 87h
Return: AX = number of unsent characters
SeeAlso: AX=88h"COURIERS"
--------S-1487-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON DTR
AH = 87h
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-1488-------------------------------
INT 14 - COURIERS.COM - ABORT OUTPUT
AH = 88h
SeeAlso: AH=09h,AH=85h"COURIERS"
--------S-1488-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF DTR
AH = 88h
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-1489-------------------------------
INT 14 - COURIERS.COM - SEND SINGLE CHARACTER
AH = 89h
CL = character to send
SeeAlso: AH=01h,AH=84h"COURIERS"
--------S-1489-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON RTS
AH = 89h
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-148A-------------------------------
INT 14 - COURIERS.COM - SEND BREAK
AH = 8Ah
SeeAlso: AH=89h"COURIERS",AH=FAh
--------S-148A-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF RTS
AH = 8Ah
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-148B-------------------------------
INT 14 - COMM-DRV v14.0 - SET USER INTERRUPT ROUTINE
AH = 8Bh
CX = bitmask of interrupt to process
00h = deinstall
BX:DI -> DWORD containing address of function to be called
Return: AH bit 7 clear if successful
AH bit 7 set on error
--------S-148C-------------------------------
INT 14 - COURIERS.COM - SET SPEED
AH = 8Ch
BX = speed in bps
SeeAlso: AH=00h,AH=82h"COURIERS"
--------S-148C-------------------------------
INT 14 - COMM-DRV v14.0 - READ UART REGISTER
AH = 8Ch
AL = register offset
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
AL = contents of UART register
SeeAlso: AH=8Dh"COMM-DRV"
--------S-148D-------------------------------
INT 14 - COURIERS.COM - DECONFIGURE PORT
AH = 8Dh
SeeAlso: AH=82h"COURIERS"
--------S-148D-------------------------------
INT 14 - COMM-DRV v14.0 - WRITE UART REGISTER
AH = 8Dh
AL = register offset
BL = new value for UART register
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AH=8Ch"COMM-DRV"
--------S-148E-------------------------------
INT 14 - COMM-DRV v14.0 - READ PACKET NONDESTRUCTIVELY
AH = 8Eh
CX = length of packet in bytes
DX = port number
ES:DI -> buffer for packet
Return: AH = line status (see #0201)
bit 7 set on error (see AX=8000h"COMM-DRV")
AL destroyed
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
Desc: retrieve a packet from the input buffer without removing it from the
buffer
Note: this call requires that at least the requested number of bytes are
already present in the input buffer, and will fail if there are
fewer bytes available
SeeAlso: AX=8000h"COMM-DRV",AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"

--------S-14A0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORT
AH = A0h
ES:BX -> ASCIZ internet host name
CX = length of name
Return: AH = return code (00h,04h-06h,08h,0Ah-0Ch) (see #0289)
CL = session ID
Program: the Bridge Application Program Interface is a set of functions which
makes many of the details of LAN communications transparent
Note: Novell TELAPI.EXE returns AH=09h (not supported) and CL=00h
SeeAlso: AH=A1h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AX=AF00h

(Table 0289)
Values for 3com BAPI return code:
00h successful
01h no characters written
02h no characters read
03h no such session
04h clearinghouse name not found
05h no response from host
06h no more sessions available
07h session aborted
08h invalid clearinghouse name
09h not supported
0Ah internal (general) network error
0Bh out of memory
0Ch invalid IP address
--------S-14A0--CXFFFF-----------------------
INT 14 - Interconnections Inc. TES - INSTALLATION CHECK/STATUS REPORT
AH = A0h
CX = FFFFh
Return: CF clear if successful
AX = 5445h ('TE')
CX <> FFFFh
DX = port number
CF set on error
Program: TES is a network serial port emulation program
SeeAlso: AH=A1h"TES"
--------S-14A1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
AH = A1h
DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0289)
AL destroyed (Novell TELAPI.EXE)
SeeAlso: AH=A0h"BAPI"
--------S-14A1-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SESSIONS WITH STATUS
AH = A1h
Return: CX = number of active sessions
ES:SI -> status array (see #0290)
SeeAlso: AH=A2h"TES",AH=A3h"TES"

Format of Interconnections TES status array entry:
Offset Size Description (Table 0290)
00h BYTE status
01h WORD offset of name
--------S-14A2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE CHARACTER
AH = A2h
AL = character
DH = session ID (00h for external session managment)
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #0289)
SeeAlso: AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
--------S-14A2-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SERVER NAMES
AH = A2h
Return: CX = number of servers
ES:SI -> array of offsets from ES for server names
SeeAlso: AH=A1h"TES"
--------S-14A3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ CHARACTER
AH = A3h
DH = session ID (00h for external session managment)
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #0289)
AL = character read or 00h if none available
SeeAlso: AH=A0h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AH=A7h"BAPI"
--------S-14A3-------------------------------
INT 14 - Interconnections Inc. TES - START A NEW SESSION
AH = A3h
ES:SI -> ???
Return: CF clear if successful
AX = 5445h ('TE')
CX <> FFFFh
DX = port number
CF set on error
SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"
--------S-14A4-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE BLOCK
AH = A4h
CX = length of buffer in bytes
DH = session ID (00h for external session managment)
ES:BX -> buffer containing data
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #0289)
CX = number of bytes actually sent
SeeAlso: AH=19h,AH=86h,AH=A0h"BAPI",AH=A5h"BAPI"
--------S-14A4-------------------------------
INT 14 - Interconnections Inc. TES - HOLD CURRENTLY ACTIVE SESSION
AH = A4h
???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A5-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ BLOCK
AH = A5h
CX = length of buffer
DH = session ID (00h for external session managment)
ES:BX -> buffer for data
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #0289)
CX = number of bytes actually read
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
SeeAlso: AH=A7h"BAPI",AX=FF02h
--------S-14A5-------------------------------
INT 14 - Interconnections Inc. TES - RESUME A SESSION
AH = A5h
AL = session number
Return: ???
SeeAlso: AH=A4h"TES",AH=A6h"TES"
--------S-14A6-------------------------------
INT 14 - 3com BAPI SERIAL I/O - SEND SHORT BREAK
AH = A6h
DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0289)
Desc: generate a short break signal; if data delivery was turned off by the
break, wait for the host to turn it on again
SeeAlso: AH=1Ah,AH=8Ah,AH=FAh,AH=A0h"BAPI"
--------S-14A6-------------------------------
INT 14 - Interconnections Inc. TES - DROP A SESSION
AH = A6h
AL = session number
Return: AH = status
00h successful
else error
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A7-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ STATUS
AH = A7h
DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0289)
CX = number of bytes available for reading
Note: Novell TELAPI.EXE v4.01 always returns either 0 or 1 bytes available
SeeAlso: AH=A5h"BAPI"
--------S-14A7-------------------------------
INT 14 - Interconnections Inc. TES - SWITCH TO NEXT ACTIVE SESSION
AH = A7h
???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A8-------------------------------
INT 14 - Interconnections Inc. TES - SEND STRING TO COMMAND INTERPRETER
AH = A8h
AL = 00h no visible response
ES:SI -> ASCIZ command
Return: ???
--------N-14A8-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION INFORMATION???
AH = A8h
DH = session ID???
CH = subfunction
02h ???
0Dh ???
0Fh ???
10h ???
11h ???
28h ???
else
Return: AH = 09h (not supported)
Return: AH = return code (see #0289)
00h successful
CL = ??? (0/1/8) (subfunctions 02h,0Dh,0Fh,10h)
CL = ??? (7Fh/FFh) (subfunction 28h)
CX = ??? (subfunction 11h)
SeeAlso: AH=A9h"TelAPI"
--------N-14A9-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION CONTROL???
AH = A9h
DH = session ID???
CH = subfunction
02h ???
0Dh ???
0Fh ???
10h ???
11h ???
28h ???
else
Return: AH = 09h (not supported)
???
Return: AH = return code (see #0289)
???
SeeAlso: AH=A8h"TelAPI",AH=E4h,INT 6B/AX=0600h
--------V-14AA01-----------------------------
INT 14 - DimVGA v2.0+ - INSTALLATION CHECK
AX = AA01h
Return: AX = FFFFh if installed, unchanged
BX = version (v1.5+ only), BH = major, BL = minor (v1.5 = 0105h)
CX = resident segment (v3.1+)
Program: DimVGA is a public domain screen saver by Menno Pieters
SeeAlso: AX=AA02h,AX=AA03h,AX=AA06h,INT 11/AX=0225h/BX=6900h,INT 12"KEYBUI"
SeeAlso: INT 2D/AL=10h"Burnout Plus",INT 2F/AX=6400h,INT 2F/AH=93h
SeeAlso: INT 2F/AX=C000h"VGAsave",INT 2F/AX=C000h"AD-DOS",INT 2F/AX=C050h
SeeAlso: INT 2F/AX=E300h
Index: screen saver;DimVGA
--------V-14AA02-----------------------------
INT 14 - DimVGA v2.0+ - SET TIME-OUT (DIMMING/BLANKING) PERIOD
AX = AA02h
BX = number of clock ticks
Return: AX = FFFFh
Note: on screen modes with 256 or less colors DimVGA will dim the screen,
when more than 256 colors can be used DimVGA will blank the screen.
SeeAlso: AX=AA01h,AX=AA03h,AX=AA04h,AX=AA06h
Index: screen saver;DimVGA
--------V-14AA03-----------------------------
INT 14 - DimVGA v2.0+ - SET DIMMING FACTOR
AX = AA03h
BX = percentage remaining visible (1-99)
Return: AX = FFFFh
SeeAlso: AX=AA02h,AX=AA05h,AX=AA06h
Index: screen saver;DimVGA
--------V-14AA04-----------------------------
INT 14 - DimVGA v2.0+ - GET TIME-OUT PERIOD
AX = AA04h
Return: AX = FFFFh
BX = current time-out in clock ticks
SeeAlso: AX=AA02h,AX=AA05h,AX=AA0Ah
Index: screen saver;DimVGA
--------V-14AA05-----------------------------
INT 14 - DimVGA v2.0+ - GET DIMMING FACTOR
AX = AA05h
Return: AX = FFFFh
BX = current dimming factor
SeeAlso: AX=AA03h,AX=AA04h,AX=AA0Ah
Index: screen saver;DimVGA
--------V-14AA06-----------------------------
INT 14 - DimVGA v2.0+ - DISABLE
AX = AA06h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA07h,AX=AA0Ah
Index: screen saver;DimVGA
--------V-14AA07-----------------------------
INT 14 - DimVGA v2.0+ - ENABLE
AX = AA07h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA06h,AX=AA0Ah
Index: screen saver;DimVGA
--------V-14AA08-----------------------------
INT 14 - DimVGA v2.0+ - DIM SCREEN 'MANUALLY'
AX = AA08h
Return: AX = FFFFh
Note: this function will dim the screen immediately, even if DimVGA is
currently disabled
SeeAlso: AX=AA01h,AX=AA02h,AX=AA09h
Index: screen saver;DimVGA
--------V-14AA09-----------------------------
INT 14 - DimVGA v2.0+ - UNDIM SCREEN 'MANUALLY'
AX = AA09h
Return: AX = FFFFh
Note: this function will undim the screen immediately, even if DimVGA is
currently disabled
SeeAlso: AX=AA01h,AX=AA08h
Index: screen saver;DimVGA
--------V-14AA0A-----------------------------
INT 14 - DimVGA v2.0+ - CHECK WHETHER ENABLED
AX = AA0Ah
Return: AX = FFFFh
BX = current state (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA06h,AX=AA07h
Index: screen saver;DimVGA
--------V-14AA0B-----------------------------
INT 14 - DimVGA v2.1+ - SET HOTKEY
AX = AA0Bh
BH = shift state (see #0291)
BL = keyboard scancode
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA0Ch
Index: screen saver;DimVGA

Bitfields for DimVGA hotkey shift state:
Bit(s) Description (Table 0291)
7-4 unused
3 Alt key pressed
2 Ctrl key pressed
1 Left shift key pressed
0 Right shift key pressed
--------V-14AA0C-----------------------------
INT 14 - DimVGA v2.1+ - GET HOTKEY
AX = AA0Ch
Return: AX = FFFFh
BH = shift state (see #0291)
BL = keyboard scancode
SeeAlso: AX=AA01h,AX=AA0Bh
Index: screen saver;DimVGA
--------V-14AA0D-----------------------------
INT 14 - DimVGA v3.0+ - SET MOUSE CHECK STATUS
AX = AA0Dh
BX = new mouse check status
0000h mouse checking off
0001h mouse checking on
Return: AX = FFFFh
Note: before switching mouse checking on, a mouse driver should be
found in memory. If no mouse driver is found, mouse checking
should be switched off (resident DimVGA does not check by itself).
SeeAlso: AX=AA01h,AX=AA0Eh
Index: screen saver;DimVGA
--------V-14AA0E-----------------------------
INT 14 - DimVGA v3.0+ - GET MOUSE CHECK STATUS
AX = AA0Eh
Return: BX = mouse check status (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA0Dh
Index: screen saver;DimVGA
--------V-14AA0F-----------------------------
INT 14 - DimVGA v3.4 - SET LOCKING STATUS
AX = AA0Fh
BX = locking status
0000h disabled
0001h enabled
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA10h
Index: screen saver;DimVGA
--------V-14AA10-----------------------------
INT 14 - DimVGA v3.4 - GET MOUSE CHECK STATUS
AX = AA10h
Return: BX = locking status (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA0Fh
Index: screen saver;DimVGA
--------S-14AF00BXAAAA-----------------------
INT 14 - 3com BAPI SERIAL I/O - INSTALLATION CHECK
AX = AF00h
BX = AAAAh
Return: AX = AF01h if installed
BH = protocol type (if BX=AAAAh on entry)
01h NetManage TCP/IP
BL = version for protocol type (if BX=AAAAh on entry)
Note: early versions of the BAPI and the ROM BIOS simply destroy AX; this
behavior is used to determine whether the newer functions (AH=B0h,
AH=B1h,etc) are available
SeeAlso: AH=A0h"BAPI"
--------S-14B0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - EN/DISABLE "ENTER COMMAND MODE" (ECM) CHARACTER
AH = B0h
AL = new state (00h disabled, 01h enabled)
Return: AH = return code (00h,07h,0Ah) (see #0289)
Note: disabling the ECM character allows applications to send data which
includes the ECM character
SeeAlso: AX=AF00h"BAPI",AH=B1h,AH=B2h
--------S-14B1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - ENTER COMMAND MODE
AH = B1h
Return: AH = return code (00h,07h,0Ah) (see #0289)
Desc: provide a means for the application or terminal emulator to perform
the same action normally caused by the ECM character
SeeAlso: AH=B0h,AH=B2h
--------S-14B2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET ECM WATCH STATE
AH = B2h
Return: AH = return code (00h,07h,0Ah) (see #0289)
AL = watch flag (00h disabled, 01h enabled)
Desc: determine whether the ECM character is enabled
SeeAlso: AH=B0h,AH=B1h
--------S-14B3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET/SET CONFIGURATION INFO
AH = B3h
AL = direction (00h get, 01h set)
DH = session ID (00h for external session managment)
DL = configuration item (00h = end-of-line mapping)
CX = new configuration item value (if AL=01h)
---if DL=00h---
CH = application EOL type (app to Telnet client)
01h application will send lone CR
02h application will send CR-? pair
CL = driver EOL type (Telnet client to Telnet server)
01h driver should send CR-NUL pair
02h driver should send CR-LF pair
Return: AH = return code (00h,03h,09h-0Bh) (see #0289)
---if AL=00h---
CX = configuration item value (see above)
SeeAlso: AH=B2h
--------N-14E0-------------------------------
INT 14 - TelAPI - ???
AH = E0h
BX = ???
CX:DX = ???
DS:DI -> ???
ES:SI -> ???
Return: AX = status (0000h,FF37h,etc.)
ES:SI -> ??? if ???
???
SeeAlso: AH=ECh,AX=FF00h
--------S-14E000-----------------------------
INT 14 - MX5 Extended FOSSIL - GET MNP STATUS BLOCK
AX = E000h
DX = port number (0-3)
Return: ES:BX -> status block (see #0292)
Program: MX5 is a FOSSIL driver by MagicSoft which emulates MNP Level 5, and
ships with the MTEZ terminal program as MTEMNP.DRV (a TSR despite
the .DRV extension)
SeeAlso: AX=E006h

Format of MX5 Extended FOSSIL status block:
Offset Size Description (Table 0292)
00h BYTE flag: active (00h no, 01h yes)
01h BYTE MNP level (2,4,5)
02h BYTE series ID from remote MNP
03h DWORD total packets transmitted
07h DWORD duplicate packets transmitted
0Bh DWORD maximum speed
0Fh DWORD total packets received
13h DWORD duplicate packets received
17h DWORD maximum speed
--------S-14E001-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP LEVEL
AX = E001h
BH = function
00h get MNP level
01h set MNP level
BL = new level (00h none, 02h/04h/05h MNP level N)
DX = port number (0-3)
Return: BL = MNP level
SeeAlso: AX=E002h,AX=E003h,AX=E004h,AX=E006h
--------S-14E002-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP ANSWER/ORIGINATE MODE
AX = E002h
BH = function
00h get answer/originate mode
01h set mode
BL = new mode (00h originate [default], 01h answer)
DX = port number (0-3)
Return: BL = answer/originate mode
SeeAlso: AX=E001h,AX=E003h,AX=E006h
--------S-14E003-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP WAIT TICKS
AX = E003h
BH = function
00h get wait ticks
01h set wait ticks
BL = MNP wait ticks (default 0Eh)
DX = port number (0-3)
Return: BL = wait ticks
SeeAlso: AX=E001h,AX=E002h,AX=E006h
--------S-14E004-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP CONNECT SOUND LEVEL
AX = E004h
BH = function
00h get sound level
01h set sound level
BL = new sound level (00h off, 01h on [default])
DX = port number
Return: BL = sound state
Desc: specify whether MX5 should generate beeps after an MNP connection
(three high beeps if successful, high then low on connection failure)
SeeAlso: AX=E002h,AX=E006h
--------S-14E005-----------------------------
INT 14 - MX5 Extended FOSSIL - UNINSTALL
AX = E005h
Return: BX = segment of MX5's memory block or 0000h on failure
Note: caller must free the returned memory block to complete the uninstall
SeeAlso: AX=E006h
--------S-14E006BX0000-----------------------
INT 14 - MX5 Extended FOSSIL - INSTALLATION CHECK
AX = E006h
BX = 0000h
Return: BX = 4D58h ('MX') if installed
AH = major version
AL = minor version
SeeAlso: AX=E000h,AX=E001h,AX=E005h,AX=E007h
--------S-14E007-----------------------------
INT 14 - MX5 Extended FOSSIL - WAIT SPECIFIED NUMBER OF TICKS
AX = E007h
CX = number of ticks to wait
Return: nothing
SeeAlso: AX=E006h
--------N-14E1-------------------------------
INT 14 - TelAPI - ???
AH = E1h
BX = connection ID
???
Return: AX = status (0000h,FFF7h,maybe others)
???
SeeAlso: AH=E6h,AX=FF00h
--------N-14E2-------------------------------
INT 14 - TelAPI - BUFFERED READ
AH = E2h
BX = connection ID
CX = length of buffer in bytes
ES:SI -> buffer for data
Return: AX = number of characters actually read??? (negative on error)
SeeAlso: AH=E6h,AX=FF00h,INT 6B/AH=01h
--------N-14E3-------------------------------
INT 14 - TelAPI - BUFFERED WRITE
AH = E3h
BX = connection ID
CX = length of buffer in bytes
ES:SI -> buffer containing data
Return: AX = number of characters actually written??? (negative on error)
SeeAlso: AH=07h"TelAPI",AH=E6h,AX=FF00h,INT 6B/AH=00h
--------N-14E4-------------------------------
INT 14 - TelAPI - CONNECTION CONTROL???
AH = E4h
BX = connection ID
CX = ???
ES:SI -> 10-byte buffer containing ???
Return: ???
SeeAlso: AH=A9h,AH=E6h,AX=FF00h,INT 6B/AX=0600h
--------N-14E5-------------------------------
INT 14 - TelAPI - ???
AH = E5h
Return: AX = status???
SeeAlso: AH=E6h,AX=FF00h
--------N-14E6-------------------------------
INT 14 - TelAPI - ???
AH = E6h
Return: AX = status???
Notes: TelAPI also supports the NASI/NACS and NCSI APIs on INT 6B
this function invokes AH=E5h internally
SeeAlso: AX=FF00h,INT 6B/AH=00h,INT 6B/AH=10h
--------N-14E7-------------------------------
INT 14 - TelAPI - GET ???
AH = E7h
ES:SI -> 20-byte buffer for ???
Return: AX = 0000h (successful)
ES:SI buffer filled
SeeAlso: AX=FF00h
--------N-14E8-------------------------------
INT 14 - TelAPI - SET ???
AH = E8h
BX = connection ID
CL = new value for ???
DX = ??? (ignored by Novell TELAPI v4.01)
Return: AX = status (0000h,FFFFh)
SeeAlso: AX=FF00h
--------N-14E9-------------------------------
INT 14 - TelAPI - ???
AH = E9h
DX = ???
Return: ???
SeeAlso: AX=FF00h
--------N-14EA-------------------------------
INT 14 - TelAPI - GET CONNECTION INFO???
AH = EAh
BX = connection ID
ES:SI -> buffer for info???
Return: AX = status (0000h,FFFFh,etc.)
SeeAlso: AX=FF00h
--------N-14EB-------------------------------
INT 14 - TelAPI - GET ???
AH = EBh
ES:SI -> buffer for ???
Return: ES:SI buffer filled
SeeAlso: AX=FF00h
--------N-14EC-------------------------------
INT 14 - TelAPI - ???
AH = ECh
BX = ???
CX:DX = ???
DS:DI -> ???
ES:SI -> ???
Return: AX = status (0000h,FF37h,etc.)
ES:SI -> ??? if ???
???
Note: this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AH=E0h"TelAPI",AX=FF00h
--------N-14ED-------------------------------
INT 14 - TelAPI - ???
AH = EDh
BX = connection ID
Return: AX = status (0000h,FFFFh,etc.)
Note: this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AX=FF00h
--------a-14F0F0-----------------------------
INT 14 - ASAP v1.0 - ???
AX = F0F0h
DX = ???
???
Return: ???
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader by
MicroTalk
SeeAlso: AX=F0F1h
--------a-14F0F1DX0000-----------------------
INT 14 - ASAP v1.0 - INSTALLATION CHECK
AX = F0F1h
DX = 0000h
Return: DX = segment of resident code
0000h if not installed
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader by
MicroTalk
SeeAlso: AX=F0F0h,INT 10/AX=3800h
--------S-14F4FF-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - INSTALLATION CHECK
AX = F4FFh
DX = port (00h-03h)
Return: CF clear if present
AX = 0000h
CF set if not present
AX <> 0000h
SeeAlso: AH=36h"ComShare",AH=F9h,AH=FCh
--------S-14F9-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - REGAIN CONTROL
AH = F9h
DX = port (00h-03h)
SeeAlso: AX=F4FFh
--------S-14FA-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SEND BREAK
AH = FAh
DX = port (00h-03h)
SeeAlso: AH=07h"MBBIOS",AH=1Ah,AH=8Ah
--------S-14FB-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET OUTGOING MODEM SIGNALS
AH = FBh
AL = modem control register (see #0231 at AH=05h)
DX = port (00h-03h)
SeeAlso: AH=05h"SERIAL"
--------S-14FC-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
AH = FCh
DX = port (00h-03h)
Return: AH = RS232 status bits (see #0201 at AH=03h)
AL = character
SeeAlso: AH=02h,AH=0Ch,AX=FF02h
--------S-14FD02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ STATUS
AX = FD02h
Return: CX = number of characters available
--------N-14FF00-----------------------------
INT 14 - TelAPI - INSTALLATION CHECK
AX = FF00h
Return: AL = FFh if installed
AH = 00h for Novell TELAPI.EXE
SeeAlso: AH=E6h,AX=F4FFh
--------S-14FF01-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET SEND BUFFER
AX = FF01h
CX = length of buffer (0000h to cancel buffer assignment)
DX = port (00h-03h)
ES:BX -> send buffer
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF02h
--------S-14FF02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET RECEIVE BUFFER
AX = FF02h
CX = length of buffer (0000h to cancel buffer assignment)
DX = port (00h-03h)
ES:BX -> receive buffer
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF03h
--------S-14FFF8-----------------------------
INT 14 - COMM-DRV v14.0 - SET BAUD RATE DIVISOR
AX = FFF8h
BX = card type (sub-device number)
CX = new baudrate divisor
DX = index to baud rate
Return: AH bit 7 set on error
AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV"
--------S-14FFFB-----------------------------
INT 14 - COMM-DRV v14.0 - GET HIGHEST ALLOWED PORT NUMBER
AX = FFFBh
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
BX = highest port number
--------S-14FFFC-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 FLAGS
AX = FFFCh
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
BX = flags (see #0293)
SeeAlso: AX=FFFDh

Bitfields for INT 14h flags:
Bit(s) Description (Table 0293)
0 port active for INT 14h
1 interface behaving like a FOSSIL driver
--------S-14FFFD-----------------------------
INT 14 - COMM-DRV v14.0 - SET INT 14 FLAGS
AX = FFFDh
BX = flags (see #0293)
DX = port number
Return: AH bit 7 set on error
AH bit 7 clear if successful
SeeAlso: AX=FFFCh
--------S-14FFFE-----------------------------
INT 14 - COMM-DRV v14.0 - RESTORE INT 14 VECTOR TO ORIGINAL
AX = FFFEh
Return: AH bit 7 set on error
AH bit 7 clear if successful
--------S-14FFFF-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 INFORMATION AREA
AX = FFFFh
BX:SI -> DWORD buffer for address of information area (see #0294)
(initialized to zeros)
Return: BX:SI buffer filled with nonzero value if installed
Program: COMM-DRV is a universal serial communications driver by Willies'
Computer Software Company, which supports standard INT 14 and
FOSSIL calls as well as its own interfaces
Index: installation check;COMM-DRV

Format of COMM-DRV information area:
Offset Size Description (Table 0294)
00h 8 BYTEs signature "COMM-DRV"
08h 2 BYTEs 00h,00h
0Ah DWORD -> direct address mapping table
0Eh DWORD previous INT 14 vector
--------t-15---------------------------------
INT 15 - Microsoft TSR Specification
No additional information available at this time.
--------B-1500-------------------------------
INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
AH = 00h
Return: CF set on error
AH = 86h no cassette present
CF clear if successful
SeeAlso: AH=01h"CASSETTE"
--------M-1500-------------------------------
INT 15 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS
AH = 00h
Return: CX = signed X count
DX = signed Y count
--------O-1500-------------------------------
INT 15 - VMiX v2+ - INSTALLATION CHECK
AH = 00h
Return: DX = 0798h if installed
AX = version (AH = major, AL = minor)
--------T-1500-------------------------------
INT 15 - MultiDOS Plus - GIVE UP TIME SLICE
AH = 00h
Note: if issued by the highest-priority task while MultiDOS is using
priority-based rather than round-robin scheduling, control will be
returned to the caller immediately
SeeAlso: AH=03h"MultiDOS",AX=1000h
--------B-1501-------------------------------
INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
AH = 01h
Return: CF set on error
AH = 86h no cassette present
CF clear if successful
SeeAlso: AH=00h"CASSETTE"
--------b-1501-------------------------------
INT 15 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM
AH = 01h
AL = NVRAM location (00h to 3Fh) (see #0295)
BL = NVRAM data value
Return: AH = return code
00h OK
01h address bad
02h write error
SeeAlso: AH=02h"Amstrad"

Format of Amstrad NVRAM:
Offset Size Description (Table 0295)
00h BYTE time of day: seconds
01h BYTE alarm time: seconds
02h BYTE time of day: minutes
03h BYTE alarm time: minutes
04h BYTE time of day: hours
05h BYTE alarm time: hours
06h BYTE day of week, 1 = Sunday
07h BYTE day of month
08h BYTE month
09h BYTE year mod 100
0Ah BYTE RTC status register A (see #0296)
0Bh BYTE RTC status register B (see #0297)
0Ch BYTE RTC status register C (read-only) (see #0298)
0Dh BYTE RTC status register D
bit 7: battery good
0Eh 6 BYTEs time and date machine last used
14h BYTE user RAM checksum
15h WORD Enter key scancode/ASCII code
17h WORD Forward delete key scancode/ASCII code
19h WORD Joystick fire button 1 scancode/ASCII code
1Bh WORD Joystick fire button 2 scancode/ASCII code
1Dh WORD mouse button 1 scancode/ASCII code
1Fh WORD mouse button 2 scancode/ASCII code
21h BYTE mouse X scaling factor
22h BYTE mouse Y scaling factor
23h BYTE initial VDU mode and drive count
24h BYTE initial VDU character attribute
25h BYTE size of RAM disk in 2K blocks
26h BYTE initial system UART setup byte
27h BYTE initial external UART setup byte
28h 24 BYTEs available for user application
Note: bytes 00h-0Dh are the same on the IBM AT as they are used/updated by
the clock chip

Bitfields for RTC status register A:
Bit(s) Description (Table 0296)
7 set if date/time being updated
6-4 time base speed, default 010 = 32768 Hz
3-0 interrupt rate selection, default 0110 = 1024 Hz

Bitfields for RTC status register B:
Bit(s) Description (Table 0297)
7 clear if normal update, set if abort update
6 periodic interrupt enable
5 alarm interrupt enable
4 update end interrupt enable
3 square wave enable
2 date mode (clear = BCD, set = binary)
1 24-hour format
0 daylight saving time enable

Bitfields for RTC status register C:
Bit(s) Description (Table 0298)
7 IRQF flag
6 PF flag
5 AF flag
4 UF flag
--------O-1501-------------------------------
INT 15 - VMiX - "sys_chanreq" - I/O CHANNEL OBJECT MANAGER
AH = 01h
STACK: WORD object ID of requestor
DWORD pointer to ASCIZ name of requested method
"assign" assign channel to object
"deassign" deassign channel
"cursor" set cursor on/off
"init" initialize comm port
"open" open I/O channel
"position" set cursor position
"receive" get buffered packet from comm port
"send" send buffered packet to comm port
"vio" set current virtual I/O to specified channel
"window" make window at cursor position
---if "assign"---
WORD object UID
WORD caller UID/PID
DWORD CSL with port
---if "deassign"---
WORD channel ID
---if "cursor"---
WORD channel ID (must be a SRCSINK)
WORD new state (0000h off, 0001h on)
---if "init"---
WORD channel ID (must be a SRCSINK)
WORD comm port number (00h-03h)
WORD UART init code
---if "open"---
WORD channel ID
---if "position"---
WORD channel ID (must be a SRCSINK)
WORD position (high byte = row, low byte = column)
---if "receive"---
DWORD pointer to buffer
---if "send"---
WORD length of buffer
DWORD pointer to buffer
---if "vio"---
WORD channel ID (must be a SRCSINK)
---if "window"---
WORD top left (high byte = row, low byte = column)
WORD bottom right (high byte = row, low byte = column)
Return: DX:AX -> IRP structure or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=02h"VMiX"
--------T-1501-------------------------------
INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE
AH = 01h
AL = semaphore number (00h-3Fh)
Return: AH = status
00h successful
02h invalid semaphore number
Notes: if the semaphore is not owned, ownership is assigned to the calling
task and the call returns immediately
if the semaphore is already owned by another task, the calling task
is placed on a queue for the semaphore and suspended until it can
become owner of the semaphore
semaphore 0 is used internally by MultiDOS to synchronize DOS access
SeeAlso: AH=02h"MultiDOS",AH=10h"MultiDOS",AH=1Bh"MultiDOS"
--------B-1502-------------------------------
INT 15 - CASSETTE - READ DATA (PC and PCjr only)
AH = 02h
CX = number of bytes to read
ES:BX -> buffer
Return: CF clear if successful
DX = number of bytes read
ES:BX -> byte following last byte read
CF set on error
AH = status (see #0299)
SeeAlso: AH=00h"CASSETTE",AH=03h"CASSETTE"

(Table 0299)
Values for Cassette status:
00h successful
01h CRC error
02h bad tape signals
04h no data
80h invalid command
86h no cassette present
--------b-1502-------------------------------
INT 15 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM
AH = 02h
AL = NVRAM location (00h to 3Fh)
Return: AH = return code
00h OK
01h address bad
02h checksum error
AL = NVRAM data value
SeeAlso: AH=01h"Amstrad"
--------O-1502-------------------------------
INT 15 - VMiX - "sys_memreq" - MEMORY OBJECT MANAGER
AH = 02h
STACK: WORD object ID of requestor
DWORD pointer to ASCIZ name of requested method
"assign" allocate low memory block
"assign extended" allocate extended memory pages
"assign gdt" allocate GDT selector
"paged" allocate low paged memory
"paged extended" alllocate extended memory pages
"deassign" free memory block
"deassign gdt" free GDT selector
"getvpage" get physical address for virtual page
"setvpage" set physical address for virtual page
"info" get VMiX memory usage info block
"move" move contents of 32-bit memory
"newmcb" make new DOS memory control block
"owner" get process ID of MCB or PSP owner
"umb" allocate upper memory block
"video" toggle system use of vidoe memory and get stat
---if "assign"---
WORD number of objects
WORD size in bytes (multiple of 512 bytes)
---if "assign extended"---
WORD number of objects
WORD size in bytes (multiple of 4K)
---if "assign gdt"---
WORD access type (low byte)
WORD segment size in paragraphs
DWORD pointer to start of physical segment
---if "paged"---
WORD number of 512-byte pages
---if "paged extended"
WORD number of 4K pages
---if "deassign"---
DWORD pointer returned by previous allocation call
---if "deassign gdt"---
WORD GDT selector
---if "getvpage"---
WORD owner's process ID
DWORD pointer to buffer for page structure (struct VPGE)
---if "setvpage"---
WORD owner's process ID
DWORD pointer to new page structure (struct VPGE)
---if "info"---
no additional arguments
---if "move"
DWORD 32-bit source address
DWORD 32-bit destination address
WORD number of words to move
---if "newmcb"---
DWORD pointer to new MCB's location
WORD size of memory block
DWORD pointer to ASCIZ name string (max 8 chars)
---if "owner"---
WORD MCB or PSP segment
---if "umb"---
WORD size in paragraphs
---if "video"---
no additional arguments
Return: DX:AX -> memory block or VPGE struct or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=01h"VMiX"
--------T-1502-------------------------------
INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE
AH = 02h
AL = semaphore number (00h-3Fh)
Return: AH = status
00h successful
01h not semaphore owner
02h invalid semaphore number
Notes: if any tasks are waiting for the semaphore, the first task on the wait
queue will become the new owner and be reawakened
do not use within an interrupt handler
SeeAlso: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS"
--------B-1503-------------------------------
INT 15 - CASSETTE - WRITE DATA (PC and PCjr only)
AH = 03h
CX = number of bytes to write
ES:BX -> data buffer
Return: CF clear if successful
ES:BX -> byte following last byte written
CF set on error
AH = status (see #0299)
CX = 0000h
SeeAlso: AH=00h"CASSETTE",AH=02h"CASSETTE"
--------V-1503-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER
AH = 03h
AL = value (I,R,G,B bits)
SeeAlso: AH=04h"Amstrad"
--------O-1503-------------------------------
INT 15 - VMiX - "sys_pinput" - PROMPTED CONSOLE INPUT
AH = 03h
STACK: DWORD pointer to ASCII prompt
WORD field outline character
WORD length of input field (max 7Fh)
DWORD address of pointer to input buffer
Return: AX = length of input (input buffer is padded with blanks)
SeeAlso: AH=04h"VMiX"
--------T-1503-------------------------------
INT 15 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL
AH = 03h
DX = number of time slices to remain suspended
Return: after specified interval has elapsed
Note: when priority-based scheduling is in use, high-priority tasks should
use this function to yield the processor
SeeAlso: AH=00h"MultiDOS",AH=0Ah"MultiDOS"
--------B-1504-------------------------------
INT 15 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
AH = 04h
ES:DI -> 32-byte results buffer for System Parameter Table (see #0300)
DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
AH = 00h success
ES:DI buffer filled
AL destroyed
CF set on failure
AX destroyed
AH = 80h/86h if not supported
SeeAlso: AH=05h"ABIOS",AH=C1h

Format of ABIOS System Parameter Table:
Offset Size Description (Table 0300)
00h DWORD FAR address of ABIOS Common Start Routine
04h DWORD FAR address of ABIOS Interrupt Routine
08h DWORD FAR address of ABIOS Time-out Routine
0Ch WORD number of bytes of stack required by this ABIOS implementation
0Eh 16 BYTEs reserved
1Eh WORD number of entries in initialization table
--------V-1504-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER
AH = 04h
AL = value (RDSEL1 and RDSEL0)
SeeAlso: AH=03h"Amstrad",05h"Amstrad"
--------O-1504-------------------------------
INT 15 - VMiX - "sys_vprintf" - FORMATTED OUTPUT TO STREAM
AH = 04h
STACK: DWORD control string
DWORD array of arguments
SeeAlso: AH=03h"VMiX"
--------T-1504-------------------------------
INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK

AH = 04h
AL = mailbox number (00h-3Fh)
CX = message length in bytes
DS:SI -> message
Return: AH = status
00h successful
01h out of message memory
02h invalid mailbox number
Note: the message is copied into a system buffer; the caller may immediately
reuse its buffer
SeeAlso: AH=05h"MultiDOS"
--------B-1505-------------------------------
INT 15 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS)
AH = 05h
ES:DI -> results buffer of length 18h * Number_of_Entries (see #0301)
DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
AH = 00h success
ES:DI buffer filled
AL destroyed
CF set on failure
AX destroyed
AH = 80h/86h if not supported
SeeAlso: AH=04h"ABIOS",AH=C1h

Format of one entry of ABIOS Initialization Table:
Offset Size Description (Table 0301)
00h WORD device ID (see #0302)
02h WORD number of Logical IDs
04h WORD Device Block length (zero for ABIOS patch or extension)
06h DWORD -> init routine for Device Block and Function Transfer Table
0Ah WORD request block length
0Ch WORD Function Transfer Table length (zero for a patch)
0Eh WORD Data Pointers length (in Common Data Area)
10h BYTE secondary device ID (hardware level this ABIOS ver supports)
11h BYTE revision (device driver revision level this ABIOS supports)
12h 6 BYTEs reserved

(Table 0302)
Values for ABIOS device ID:
00h ABIOS internal calls
01h floppy disk
02h hard disk
03h video
04h keyboard
05h parallel port
06h serial port
07h system timer
08h real-time clock
09h system services
0Ah NMI
0Bh mouse
0Eh CMOS RAM
0Fh DMA
10h Programmable Option Select (POS)
16h keyboard password
--------V-1505-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER
AH = 05h
AL = value (I,R,G,B bits)
SeeAlso: AH=04h"Amstrad"
--------O-1505-------------------------------
INT 15 - VMiX - "sys_getpid" - GET PROCESS ID OF CURRENT PROCESS
AH = 05h
Return: AX = process ID
SeeAlso: AH=06h"VMiX",AH=0Bh"VMiX"
--------T-1505-------------------------------
INT 15 - MultiDOS Plus - CHECK MAILBOX
AH = 05h
AL = mailbox number (00h-3Fh)
Return: AH = status
00h successful
DX = length of first message in queue, 0000h if no message
02h invalid mailbox number
SeeAlso: AH=04h"MultiDOS",AH=06h"MultiDOS"
--------b-1506-------------------------------
INT 15 - Amstrad PC1512 - GET ROS VERSION NUMBER
AH = 06h
Return: BX = version number
--------O-1506-------------------------------
INT 15 - VMiX - "sys_getpcb" - GET POINTER TO PROCESS CONTROL BLOCK
AH = 06h
STACK: WORD process ID
Return: DX:AX -> process control block
SeeAlso: AH=05h"VMiX",AH=07h"VMiX",AH=08h"VMiX"
--------T-1506-------------------------------
INT 15 - MultiDOS Plus - READ MAILBOX
AH = 06h
AL = mailbox number (00h-3Fh)
CX = size of buffer in bytes
ES:DI -> buffer for message
Return: AH = status
00h successful
CX = number of bytes copied
DX = actual length of message
02h invalid mailbox number
Note: if the caller's buffer is not large enough, the message is truncated
and the remainder is lost
SeeAlso: AH=04h"MultiDOS",AH=05h"MultiDOS"
--------O-1507-------------------------------
INT 15 - VMiX - "sys_getocb" - GET POINTER TO OBJECT CONTROL BLOCK
AH = 07h
STACK: WORD object type
Return: DX:AX -> object control block
SeeAlso: AH=06h"VMiX",AH=08h"VMiX"
--------T-1507-------------------------------
INT 15 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD)
AH = 07h
BX:CX = entry point of new task
DX = stack size in paragraphs
Return: AH = status
00h successful
01h no free task control blocks
02h no free memory for task's stack
Note: execution returns immediately to calling task
SeeAlso: AH=08h"MultiDOS",AH=09h"MultiDOS",AH=13h"MultiDOS"
--------O-1508-------------------------------
INT 15 - VMiX - "sys_getccb" - GET CHANNEL CONTROL BLOCK
AH = 08h
STACK: WORD channel ID
Return: DX:AX -> channel control block
SeeAlso: AH=06h"VMiX",AH=07h"VMiX"
--------T-1508-------------------------------
INT 15 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD)
AH = 08h
Return: calling task terminated, so execution never returns to caller
Notes: an internal task must be terminated with this function rather than a
DOS termination function
task's stack space is returned to parent task's memory pool
SeeAlso: AH=07h"MultiDOS"
--------O-1509-------------------------------
INT 15 - VMiX - "sys_getqueue" - GET ID OF QUEUED ELEMENT
AH = 09h
STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type)
WORD subqueue ID
Return: AX = queue ID
SeeAlso: AH=0Ah"VMiX"
--------T-1509-------------------------------
INT 15 - MultiDOS Plus - CHANGE TASK'S PRIORITY
AH = 09h
AL = new priority
Note: the priority has different meanings depending on whether priority-
based or round-robin scheduling is used
SeeAlso: AH=07h"MultiDOS"
--------O-150A-------------------------------
INT 15 - VMiX - "sys_qetqnext" - GET ID OF NEXT QUEUED ELEMENT
AH = 0Ah
STACK: WORD queue ID (0 = process queue, 1 = object, 3 = type)
WORD ID of current element in queue chain
Return: AX = ID of next element
SeeAlso: AH=09h"VMiX",AH=0Fh"VMiX"
--------T-150A-------------------------------
INT 15 - MultiDOS Plus - CHANGE TIME SLICE INTERVAL
AH = 0Ah
AL = new interval
00h = 55.0 ms (default)
80h = 27.5 ms
40h = 13.75 ms
20h = 6.88 ms
10h = 3.44 ms
08h = 1.72 ms
SeeAlso: AH=03h"MultiDOS"
--------O-150B-------------------------------
INT 15 - VMiX - "sys_sysreq" - SYSTEM CONFIGURATION MANAGER
AH = 0Bh
STACK: WORD caller's UID
DWORD pointer to ASCIZ name of requested method
"abort" abort current send/receive on comm port
"block" start/end critical section
"close" terminate interrupt-drive comm I/O
"open" prepare comm port for interrupt-driven I/O
"delay" set delay timer and wait
"hibernate" put process to sleep
"ints" enable/disable interrupt-driven INT 14h
"length" get current send/receive buffer offsets
"kswitch" switch stacks
"numproc" get number of active processes
"protocol" set protocol function for comm interrupts
"relocate" set/reset VMiX flag for relocating to himem
"status" get current open comm port status
"wake" awaken a process
"xport" get comm port polled for logins
---if "abort"---
no additional arguments
---if "block"---
WORD 0000h end, 0001h start
---if "close"---
no additional arguments
---if "open"---
WORD comm port (00h-03h)
WORD BIOS parameter byte (see #0197 at INT 14/AH=00h),
except bits 7-5: 000 = 19200, 001 = 38400, 011 = 115200
---if "delay"---
WORD time in seconds
---if "hibernate"---
WORD process ID
---if "ints"---
WORD 0000h if no, 0001h if yes
---if "length","numproc","relocate","status","xport"---
no additional arguments
---if "kswitch"---
DWORD pointer to new stack
---if "protocol"---
DWORD pointer to function (must be in low "assign"ed memory
when in 386 mode)
---if "wake"---
WORD process ID
Return: DX:AX -> result or 0000h:0000h
---if "length"---
BYTE receive offset
BYTE send offset
---if "kswitch"---
DWORD old stack pointer
---if "numproc"---
WORD number of active processes
---if "status"---
current open comm port status
---if "xport"---
current comm port being polled for logins
Note: the "delay" command reportedly disables the keyboard until the delay
completes
SeeAlso: AH=05h"VMiX",AH=0Eh"VMiX"
--------T-150B-------------------------------
INT 15 - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY
AH = 0Bh
Notes: sets calling task's screen pointer to actual screen memory; the pointer
may be restored with AH=0Ch
caller's video mode must be same as foreground task's video mode
any text written while in the background will be saved to the
foreground task's virtual screen when it switches to the background
useful if a background task wants to display a message on the
foreground screen
SeeAlso: AH=0Ch"MultiDOS"
--------O-150C-------------------------------
INT 15 - VMiX - "sys_getstack" - GET POINTER TO PROCESS TSS STACK
AH = 0Ch
STACK: WORD process ID
Return: DX:AX -> TSS stack store
SeeAlso: AH=00"VMiX"
--------T-150C-------------------------------
INT 15 - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY
AH = 0Ch
Note: restores task's screen pointer saved by AH=0Bh; must not be called
unless AH=0Bh has been called first
SeeAlso: AH=0Bh"MultiDOS"
--------O-150D-------------------------------
INT 15 - VMiX - "sys_spawn" - START A CHILD PROCESS JOB SHELL
AH = 0Dh
STACK: DWORD ASCIZ string starting with requested I/O channel and
followed by standard VMiX shell command string
Return: AX = process ID or error code "SYS_ERROR"
Note: the maximum string length is 7Fh characters
SeeAlso: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh
--------T-150D-------------------------------
INT 15 - MultiDOS Plus - DISABLE MULTITASKING
AH = 0Dh
Note: calling task receives all time slices until AH=0Eh is called; this
allows time-critical events or nonreentrant code to be processed
SeeAlso: AH=0Eh"MultiDOS",AH=10h"MultiDOS",AX=101Bh,AH=20h"MultiDOS"
--------O-150E-------------------------------
INT 15 - VMiX - "sys_kill" - HARD TERMINATE PROCESS
AH = 0Eh
STACK: WORD process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=0Bh"VMiX",AH=0Dh"VMIX"
--------T-150E-------------------------------
INT 15 - MultiDOS Plus - ENABLE MULTITASKING
AH = 0Eh
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AH=20h"MultiDOS"
--------d-150F-------------------------------
INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only)
AH = 0Fh
AL = phase code
00h reserved
01h surface analysis
02h formatting
Return: CF clear if formatting should continue
CF set if formatting should terminate
Note: called during ESDI drive formatting after each cylinder is completed
SeeAlso: INT 13/AH=1Ah
--------O-150F-------------------------------
INT 15 - VMiX - "sys_getqkey" - GET KEY FIELD OF QUEUED ELEMENT
AH = 0Fh
STACK: WORD queue ID (0 = process queue, 1 = object q, 3 = type q)
WORD ID of element in queue chain
Return: AX = key
SeeAlso: AH=0Ah"VMiX"
--------T-150F-------------------------------
INT 15 - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND
AH = 0Fh
DS:BX -> ASCIZ command
Return: after command has been processed
Notes: specified string is executed as if it had been typed at the MultiDOS
command prompt
the task is placed on a queue which MultiDOS examines periodically and
is suspended until MultiDOS has processed the command
all lowercase characters up to the first blank are converted to upper
case within the given buffer
--------O-1510-------------------------------
INT 15 - VMiX - "sys_virtual" - EXECUTE CONFORMING FUNCTION IN PROTECTED MODE
AH = 10h
STACK: DWORD pointer to function
N WORDs function args
Return: AX = function's return value??? (not specified in documentation)
Note: while the function is executing, the following global descriptors are
available:
20h stack segment
38h code segment of function
40h data alias for function's code segment
additional GDT descriptors can be allocated using AH=02h with
function "assign gdt"
SeeAlso: AH=02h"VMiX",AH=51h"VMiX"
--------T-1510-------------------------------
INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE
AH = 10h
AL = semaphore number (00h-3Fh)
Return: AH = status
00h semaphore not in use
01h semaphore owned by another task
02h invalid semaphore number
03h semaphore owned by caller
SeeAlso: AH=02h"MultiDOS",AH=0Dh"MultiDOS",AH=1Dh"MultiDOS"
--------Q-151000-----------------------------
INT 15 - TopView - "PAUSE" - GIVE UP CPU TIME
AX = 1000h
Return: after other processes run
Note: under DESQview, if the process issuing this call has hooked INT 08h,
the current time-slice is set to expire at the next clock tick rather
than immediately
SeeAlso: AH=00h"MultiDOS",AX=5305h,INT 21/AH=89h,INT 21/AH=EEh"DoubleDOS"
SeeAlso: INT 2F/AX=1680h,INT 60/DI=0106h,INT 62/AH=01h,INT 6F/AH=2Ah"F_YIELD"
SeeAlso: INT 7A/BX=000Ah,INT 7F/AH=02h"MultiLink",INT 7F/AH=E8h
--------Q-151001-----------------------------
INT 15 - TopView - "GETMEM" - ALLOCATE "SYSTEM" MEMORY
AX = 1001h
BX = number of bytes to allocate
Return: ES:DI -> block of memory or 0000h:0000h (DV v2.26+)
AX = status (DV v2.42)
0000h successful
0001h failed
Note: use SETERROR (AX=DE15h) to avoid a user prompt if there is insufficient
common memory. Under DV v2.42, this call never generates a user
prompt regardless of the SETERROR value; instead, it always returns
AX=0001h and ES:DI=0000h:0000h if out of memory
SeeAlso: AX=1002h,AX=102Eh,AX=DE0Ch,AX=DE15h
--------Q-151002-----------------------------
INT 15 - TopView - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY
AX = 1002h
ES:DI -> previously allocated block
Return: block freed
SeeAlso: AX=1001h,AX=DE0Dh
--------Q-151003-----------------------------
INT 15 - TopView - "PRINTC" - DISPLAY CHARACTER/ATTRIBUTE ON SCREEN
AX = 1003h
BH = attribute
BL = character
DX = segment of object handle for window
Note: BX=0 does not display anything, it only positions the hardware cursor
--------Q-1510-------------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV 2.x
AH = 10h
AL = 04h thru 12h
Return: pops up "Programming error" window in DV 2.x
--------Q-151013-----------------------------
INT 15 - TopView - "GETBIT" - DEFINE A 2ND-LEVEL INTERRUPT HANDLER
AX = 1013h
ES:DI -> FAR service routine
Return: BX = bit mask indicating which bit was allocated
0000h if no more bits available
SeeAlso: AX=1014h,AX=1015h
Note: only a few TopView/DESQview API calls are allowed during a hardware
interrupt; if other calls need to be made, the interrupt handler
must schedule a 2nd-level interrupt with "SETBIT" (AX=1015h)
--------Q-151014-----------------------------
INT 15 - TopView - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER
AX = 1014h
BX = bit mask from INT 15/AX=1013h
SeeAlso: AX=1013h,AX=1015h
--------Q-151015-----------------------------
INT 15 - TopView - "SETBIT" - SCHEDULE ONE OR MORE 2ND-LEVEL INTERRUPTS
AX = 1015h
BX = bit mask for interrupts to post
Return: indicated routines will be called: (DV 2.0x) at next task switch
(DV 2.2x) immediately on return from
hardware interrupt
SeeAlso: AX=1013h,AX=1014h
Notes: this is one of the few TopView calls which are allowed from a hardware
interrupt handler
the handler will be called with ES containing the segment of the handle
of the next task to be executed; on return, ES must be the segment of
a task handle
--------Q-151016-----------------------------
INT 15 - TopView - "ISOBJ" - VERIFY OBJECT HANDLE
AX = 1016h
ES:DI = possible object handle
Return: BX = status
FFFFh if ES:DI is a valid object handle (see #0304)
0000h if ES:DI is not
Note: under DESQview versions prior to 2.50, an object handle is always a
pointer to the object; for versions 2.50 and up, only task handles
are always pointers--other handles may consist of a unique object
number and offset into DESQview's common memory (see #0313)
SeeAlso: AX=DE14h,AX=DE2Bh,AX=DE2Ch

(Table 0303)
Values for DESQview object type:
00h window/task
01h mailbox
02h keyboard
03h timer
04h pointer
05h panel
06h objectq

Format of DESQview object:
Offset Size Description (Table 0304)
00h WORD offset in common memory of previous object of same type
02h WORD offset in common memory of next object of same type
04h WORD signature FEDCh (DV 2.42-)
signature FEDCh or object number (DV 2.50+)
06h WORD object type (see #0303)
08h DWORD object handle to return to caller
0Ch DWORD canonicalized object address (segment = common memory)
10h WORD offset in common memory of owning task
(0000h for unowned OBJECTQs)
12h WORD mapping context
offset in common memory of mapping context record (see #0306)
remainder varies by object type and DESQview version
---v2.42 keyboard object---
14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT")
bit 15: keyboard opened
16h 4 BYTEs ???
1Ah WORD priority in OBJECTQ???
1Ch ...
25h WORD offset in common memory of ??? task
27h 4 BYTEs ???
---v2.42 objectq object---
14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT")
bit 15: OBJECTQ opened
16h 2 BYTEs ???
18h WORD offset in common memory of ??? task
1Ah 6 BYTEs ???
---v2.42 mailbox object---
14h WORD flag bits (see also AH=12h/BH=0Ah"OBJECT")
bit 15: mailbox opened
1Ah WORD priority in OBJECTQ???
1Ch 6 BYTEs ???
22h WORD offset in common memory of mailbox name (counted string)
0000h if no name
<= 5 BYTEs ???
---v2.22-2.42,2.52,2.60 window/task object---
14h BYTE 00h window, 01h task
15h BYTE internal (not Switch menu) window number???
16h BYTE internal (not Switch menu) window number???
17h WORD segment of internal window record (see #0307)
19h 2 BYTEs ???
1Bh BYTE cursor row
1Ch BYTE cursor column
1Dh BYTE visible window origin, row
1Eh BYTE visible window origin, column
1Fh BYTE window height (logical)
20h BYTE window width (logical)
21h BYTE window position, row
22h BYTE window position, column
23h BYTE window height (visible)
24h BYTE window width (visible)
25h BYTE row of top of frame (or window if unframed)
26h BYTE column of left of frame (or window if unframed)
27h BYTE window height (physical, including frame)
28h BYTE window width (physical, including frame)
29h BYTE unzoomed visible origin, row (00h before first zoom)
2Ah BYTE unzoomed visible origin, column (00h before first zoom)
2Bh BYTE unzoomed window position, row (00h before first zoom)
2Ch BYTE unzoomed window position, column (00h before first zoom)
2Dh BYTE unzoomed window height (00h before first zoom)
2Eh BYTE unzoomed window width (00h before first zoom)
unzoomed parameters above are updated when window is zoomed
to full screen
2Fh BYTE ??? initially logical window height
30h BYTE ??? initially logical window width
31h 2 BYTEs ???
33h BYTE minimum height of window
34h BYTE minimum width of window
35h BYTE maximum height of window
36h BYTE maximum width of window
37h 3 BYTEs ???
3Ah 8 BYTEs window frame characters: ul,ur,ll,lr,t,b,l,r
42h 24 BYTEs attributes???
5Ah 8 BYTEs window frame characters: ul,ur,ll,lr,t,b,l,r
62h 3 BYTEs ???
65h BYTE ??? bitflags
66h BYTE bit 0: window is zoomed
67h BYTE ???
68h WORD offset in common memory of window name or 0000h if untitled
6Ah WORD length of window name
6Ch 2 BYTEs ???
6Eh WORD offset of logical cursor in window (in character cells)
70h DWORD pointer to field table for window
74h BYTE ???
75h 2 BYTEs ???
77h BYTE number of last-visited field
78h DWORD pointer to field table entry for last-visited field
7Ch 3 BYTEs ???
7Fh BYTE select field marker character
80h BYTE ??? bit flags
bit 0: allow ECh window stream opcode to change reverse logattr
bit 1: alternate field processing mode selected
81h BYTE ???
82h DWORD notification function (manager stream opcode 8Ah)
no notification if segment = 0000h
86h DWORD notification argument (manager stream opcode 8Bh)
8Ah WORD offset in common memory of ??? window object or 0000h
8Ch WORD offset in common memory of ??? window object or 0000h
8Eh WORD offset in common memory of ??? window object or 0000h
90h BYTE ??? bitflags
91h BYTE ???
---task object only
92h BYTE bit flags (bits 0-4)
93h BYTE character for ??? (default 20h)
94h BYTE ??? flag
95h WORD offset in common memory of ???
97h 2 BYTEs ???
99h WORD ???
9Bh BYTE ??? bit flags
bit 3: ???
bit 6: perform protected-attribute processing on select fields
9Ch BYTE ???
9Dh WORD offset in common memory of current register save record
(see #0305). No register save record in use if < 01C0h
9Fh WORD offset in common memory of task's keyboard object
A1h WORD offset in common memory of task's OBJECTQ object
A3h WORD offset in common memory of task's mailbox object
A5h WORD semaphore: FFFFh if on user stack, else on task's private stack
A7h DWORD user's SS:SP
ABh WORD task's private SP (SS read from offset 0Ah)
ADh 6 BYTEs ???
B3h BYTE ??? bit flags
bit 0: run in foreground only
B4h BYTE ???
B5h BYTE ??? bitflags
B6h BYTE task status (see #0417 at AX=DE2Ch)
B7h 9 BYTEs ???
C0h WORD head pointer for keyboard buffer (wraps back to 00h after 80h)
C2h WORD tail pointer for keyboard buffer (wraps back to 00h after 80h)
C4h 2 BYTEs ??? (0000h)
C6h WORD segment of keyboard buffer for task
C8h WORD offset in common memory of ??? keyboard object
CAh BYTE ???
---v2.22-2.42
CBh WORD offset in common memory of ??? object
CEh BYTE ??? flag
CFh WORD offset in common memory of default notify window for task
or 0000h if none
D1h 4 BYTEs ???
D5h BYTE window number on Switch Window menu
D6h 5 BYTEs ???
DBh WORD offset in common memory of ??? object
DDh 2 BYTEs ???
DFh WORD API level for task
E1h WORD offset in common memory of object task is waiting on if task
status is 'waiting', else 0000h
E7h WORD segment of ???
E9h 4 BYTEs ???
EDh WORD EMS handle of virtualization buffer, 0000h if no virtualization
F1h 12 BYTEs ???
FBh WORD ???
FDh BYTE ???
FFh 12 BYTEs ???
10Bh DWORD pointer to process record (see #0308,#0309)
10Dh 10 BYTEs ???
119h DWORD SS:SP for ???
11Dh 4 BYTEs ???
121h DWORD pointer to ???
125h 25 BYTEs ???
13Eh DWORD pointer to ??? in system memory
---v2.22
142h 3 BYTEs ???
145h task's default keyboard object
---v2.42
142h DWORD pointer to first task instance data record in system memory
148h DWORD pointer to last task instance data record in system memory
(see #0310)
14Ah BYTE ???
14Dh 42 BYTEs task's default keyboard object
177h 32 BYTEs task's ObjectQ object
197h 41 BYTEs task's default mailbox object
1C0h 24 BYTEs first register save record
450h -- default top of private stack
---v2.52 (probably all DV/X)
Same as v2.60 below except there is an extra 29 bytes inserted somewhere
before offset 9Fh, but not yet known exactly where. Also, for the WAIT_ON
field (v2.60 offset E3h), some X apps (probably waiting on a socket) have
0000h even when waiting.
---v2.60
CBh WORD ??? (added in 2.50 - rest is same as 2.42)
CDh WORD offset in common memory of ??? object
D0h BYTE ??? flag
D1h WORD offset in common memory of default notify window for task
or 0000h if none
D3h 4 BYTEs ???
D7h BYTE window number on Switch Window menu
D8h 5 BYTEs ???
DDh WORD offset in common memory of ??? object
DFh 2 BYTEs ???
E1h WORD API level for task
E3h WORD If status at B6h=waiting, offset in common memory of object
that task is waiting on, else 0000h. (Task with CPU also
has 0000h here)
E9h WORD segment of ???
EBh 4 BYTEs ???
EFh WORD EMS handle of virtualization buffer, 0 if no virtualization
F3h 12 BYTEs ???
FDh WORD ???
FFh BYTE ???
101h 8 BYTEs ???
109h DWORD pointer to process record in system memory
10Dh 14 BYTEs ???
11Bh DWORD SS:SP for ???
11Fh 4 BYTEs ???
123h DWORD pointer to ???
127h 25 BYTEs ???
140h DWORD pointer to ??? in system memory
144h DWORD pointer to first task instance data record in system memory
148h DWORD pointer to last task instance data record in system memory
(from INT 15/AX=DE27h) (see #0310)
14Ch BYTE ???
14Eh 42 BYTEs task's default keyboard object
179h 32 BYTEs task's ObjectQ object
199h 41 BYTEs task's default mailbox object
1C2h 24 BYTEs first register save record
452h -- default top of private stack

Format of DESQview Register Save Record:
Offset Size Description (Table 0305)
00h WORD AX
02h WORD BX
04h WORD CX
06h WORD DX
08h WORD DI
0Ah WORD SI
0Eh WORD DS
10h WORD ES
12h DWORD return address
16h WORD original flags

Format of DESQview mapping context record:
Offset Size Description (Table 0306)
00h WORD lowest segment in process's memory
(often start of system memory chain)
02h WORD size of process's memory in paragraphs
04h BYTE flag: 00h if process swapped out, 01h otherwise
05h BYTE flag: 00h if allocated in conventional memory, 01h if EMS
06h 2 BYTEs ???
08h WORD EMS handle if in EMS, else 0
0Ah 2 BYTEs ??? (nonzero if system memory resides in shared mem???)
0Ch WORD segment of system memory block that contains process record,
referenced from segment of start of system memory chain
0Eh BYTE ???
0Fh WORD size of system memory block that contains process record
and DOS memory in paragraphs
11h BYTE bit flags
Bit 0: Swapped out???
Bit 1: ???
Bit 2: Swapped out???
12h BYTE ???
13h BYTE reference count
---v2.31
14h 10 BYTEs ???
1Eh WORD segment of process record
20h 2 BYTEs ???
22h WORD segment of ??? (in first free system memory block???)
24h WORD segment of end of system memory chain
26h WORD segment of start of system memory chain
28h 8 BYTEs ???
2Ah DWORD pointer to ??? (process record???)
2Dh 10 BYTEs ???
37h BYTE lowest interrupt vector to save on context switch
38h BYTE highest interrupt vector to save on context switch
39h WORD offset in common memory of main task with this context
3Ah 12 BYTEs ???
46h BYTE internal mapping context number
47h 12 BYTEs ???
---v2.5x-2.60
14h 6 BYTEs ???
1Ah WORD segment of process record
1Ch 2 BYTEs ???
1Eh WORD segment of first free system memory block
20h WORD segment of start of system memory chain
22h WORD segment of end of system memory chain
24h 8 BYTEs ???
2Ch DWORD pointer to ??? (1 segment into process record???)
30h 3 BYTEs ???
33h WORD Offset in common memory of main task with this context
35h 7 BYTEs ???
3Ch BYTE internal mapping context number
3Dh 14 BYTEs ???
4Bh WORD first DOS memory segment (first MCB segment+1)
4Dh BYTE ??? (flag???)
---v2.53 (2.5x???)
4Eh 12 BYTEs ???
---v2.60
4Eh WORD segment of script buffer (see #0311)
50h 6 BYTEs ???

Format of DESQview Internal Window Record (v2.31-2.60):
Offset Size Description (Table 0307)
00h BYTE internal window number???
01h BYTE display page???
02h BYTE video mode
03h 3 BYTEs ???
06h BYTE logical window height
07h BYTE logical window width
08h DWORD pointer to text video buffer
0Ch 116 BYTEs ???

Format of DESQview process record (v2.31):
Offset Size Description (Table 0308)
-470h 13 BYTEs filename of ??? Script
-463h 1117 BYTEs ??? (script buffer???)
-6h 6 BYTEs ???
00h WORD segment of parent PSP in process
02h 5 BYTEs ???
07h WORD segment of current PSP in process
09h WORD segment of first MCB in process
0Bh 13 BYTEs ???
18h 1024 BYTEs process's interrupt vector table
418h 376 BYTEs ???
590h first MCB in process

Format of DESQview process record (v2.52-v2.60) (probably also 2.5x):
Offset Size Description (Table 0309)
00h 28 BYTEs EXE header of last EXE, ??? if last program run was COM
1Ch ??? BYTEs overwritten with ASCIZ filename of last program run (EXE/COM)
11Ch WORD segment of parent PSP in process
11Eh 4 BYTEs ???
122h WORD segment of current PSP
124h WORD segment of current PSP
126h WORD segment of first MCB in process
128h 4 BYTEs ???
12Ch DWORD pointer to first process instance data record in system memory
130h DWORD pointer to last process instance data record in system memory
(from INT 15/AX=DE27h) (see #0310)
134h 8 BYTEs ???
13Ch WORD size of current environment
13Eh WORD segment of current environment
140h WORD segment of current PSP
142h DWORD entry point of current program
146h 10 BYTEs ???
---v2.52 (v2.5x???)
150h BYTE ???
151h WORD segment of parent PSP in process
153h WORD ???
155h WORD ???
157h WORD ???
159h 4 BYTEs ???
15Dh WORD segment of current environment
15Fh WORD segment of current PSP
161h WORD segment of ???
162h WORD ???
164h 3 BYTEs ???
168h 1024 BYTEs process's interrupt vector table
568h 120 BYTEs ???
5E0h first MCB in process
---v2.60
150h WORD segment of parent PSP in process
152h WORD ???
154h WORD ???
156h WORD ???
158h 4 BYTEs ???
15Ch WORD segment of current environment
15Eh WORD segment of current PSP
160h WORD segment of ???
162h WORD ???
164h 1024 BYTEs process's interrupt vector table
564h 108 BYTEs ???
5D0h first MCB in process

Format of DESQview task or process instance data record (v2.5x???, v2.60):
Offset Size Description (Table 0310)
00h DWORD pointer to next record of same type or 00000000
04h DWORD pointer to previous record of same type or 00000000
08h DWORD pointer to source area of memory during restore state
0Ch WORD number of bytes to save/restore
0Eh DWORD pointer to destination area of memory during restore state
12h WORD ??? (0)
14h N BYTEs source memory buffer during restore state

Format of DESQview script buffer (v2.60):
Offset Size Description (Table 0311)
00h 13 BYTEs ASCIZ Script filename
0Dh 80 BYTEs ???
5Eh N BYTEs script records (see #0312)

Format of one DESQview script record (v2.60):
Offset Size Description (Table 0312)
00h BYTE signature 12h
01h 18 BYTEs blank-padded script name
13h BYTE ASCII code of key attached to script or 0 if non-ASCII key
14h BYTE scan code of key attached to script if non-ASCII, else 0
15h BYTE ???
16h WORD size of script in bytes
18h N BYTEs script (ASCII code of each keystroke; if 0, next byte is
scan code of non-ASCII key)

Format of DESQview Common Memory Header (v2.31-2.60):
Offset Size Description (Table 0313)
00h WORD offset of lowest used block
02h WORD bytes of commom memory, including header
04h WORD offset of first free block
06h N BYTEs size depends of DV version, ??? (DVP buffer???)
Note: the above is located at the beginning of the commom memory segment
SeeAlso: #0314,#0315,#0323

Format of DESQview Free block header:
Offset Size Description (Table 0314)
00h WORD size of block in bytes including header
02h WORD offset of next free block
04h N BYTEs free block
SeeAlso: #0313,#0315

Format of DESQview Used block header:
Offset Size Description (Table 0315)
00h WORD size of block in bytes including header
02h N BYTEs used block
SeeAlso: #0313,#0314
--------Q-151017-----------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV 2.x
AX = 1017h
Return: pops up "Programming error" window in DV 2.x
--------Q-151018-----------------------------
INT 15 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION
AX = 1018h
BH = column
BL = row
ES = segment of object handle for window below which to search
0000h = start search with topmost window
Return: ES = segment of object handle for window which is visible at the
indicated position, or covered by indicated window
0000h if no window
SeeAlso: AX=1023h,AX=1024h
--------Q-151019-----------------------------
INT 15 - TopView - "SOUND" - MAKE TONE
AX = 1019h
BX = frequency in Hertz (0000h = silence)
CX = duration in clock ticks (18.2 ticks/sec)
Return: immediately, tone continues to completion
Notes: if another tone is already playing, the new tone does not start until
completion of the previous one. Up to 32 tones may be queued before
the process is blocked until a note completes.
in DV 2.00, the lowest tone allowed is 20 Hz
if CX = 0, the current note is cancelled; if BX = 0 as well, all queued
notes are also cancelled
SeeAlso: AH=82h"HUNTER",INT 16/AH=73h
--------Q-15101A-----------------------------
INT 15 - TopView - "OSTACK" - SWITCH TO TASK'S INTERNAL STACK
AX = 101Ah
Return: stack switched
Notes: this call may not be nested; a second call must be preceded by a call
to "USTACK" (AX=1025h)
while TopView requires many API calls to be executed while on the
task's internal stack, DESQview allows those calls to be executed
regardless of the current stack
SeeAlso: AX=1025h
--------Q-15101B-----------------------------
INT 15 - TopView - "BEGINC" - BEGIN CRITICAL REGION
AX = 101Bh
Return: task-switching temporarily disabled
Notes: will not task-switch until "ENDC" (AX = 101Ch) called unless task
voluntarily releases the CPU (upon regaining the CPU, task-switching
will again be disabled)
suspends the caller until DOS is free
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AX=DE13h,AX=DE1Ch,INT 2F/AX=1681h
SeeAlso: INT 60/DI=0602h
--------Q-15101C-----------------------------
INT 15 - TopView - "ENDC" - END CRITICAL REGION
AX = 101Ch
Return: task-switching enabled
Note: this API call may be made from within a hardware interrupt handler
SeeAlso: AX=101Bh,AX=DE13h,AX=DE1Bh,INT 2F/AX=1682h,INT 60/DI=0603h
--------Q-15101D-----------------------------
INT 15 - TopView - "STOP" - STOP TASK
AX = 101Dh
ES = segment of object handle for task to be stopped
(== handle of main window for that task)
Return: indicated task will not get any CPU time until restarted with AX=101Eh
Note: once a task has been stopped, additional "STOP"s are ignored
BUG: in DV 2.00, this function is ignored unless the indicated task is the
current task
SeeAlso: AX=101Eh,AX=102Bh,AH=12h"VMiX",INT 21/AH=81h
--------Q-15101E-----------------------------
INT 15 - TopView - "START" - START TASK
AX = 101Eh
ES = segment of object handle for task to be started
(== handle of main window for that task)
Return: indicated task is started up again
Note: once a task has been started, additional "START"s are ignored
SeeAlso: AX=101Dh,AX=102Bh,INT 21/AH=82h
--------Q-15101F-----------------------------
INT 15 - TopView - "DISPEROR" - POP-UP ERROR WINDOW
AX = 101Fh
BX = bit fields
bits 0-12: number of characters to display
bits 13,14: which mouse button may be pressed to remove window
00 = either
01 = left
10 = right
11 = either
bit 15: beep if 1
ES:DI -> text of message
CH = width of error window (0 = default)
CL = height of error window (0 = default)
DX = segment of object handle
Return: BX = status: 1 = left button, 2 = right, 27 = ESC pressed
Note: window remains on-screen until ESC or indicated mouse button is pressed
--------Q-151020-----------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV v2.00+
AX = 1020h
Return: pops up "Programming error" window in DV v2.00+
--------Q-151021-----------------------------
INT 15 - TopView - "PGMINT" - INTERRUPT ANOTHER TASK
AX = 1021h
BX = segment of object handle for task to interrupt (not self)
DX:CX -> FAR routine to jump to next time task is run
Return: nothing
Notes: the FAR routine is entered with the current ES, DS, SI, DI, and BP
values, using the task's internal stack (see AX=101Ah); only SS:SP
needs to be preserved
multiple PGMINTs to a single task are processed last-in first-out
if the other task is in a DOS or DV API call, the interruption will
occur on return from that call
--------Q-151022BX0000-----------------------
INT 15 - TopView - "GETVER" - GET VERSION
AX = 1022h
BX = 0000h
Return: BX nonzero, TopView or compatible loaded
(BL = major version, BH = minor version)
Notes: TaskView returns BX = 0001h, DESQview v2.00+ returns BX = 0A01h
--------Q-151023-----------------------------
INT 15 - TopView - "POSWIN" - POSITION WINDOW
AX = 1023h
BX = segment of object handle for parent window within which to
position the window (0 = full screen)
ES = segment of object handle for window to be positioned
DL = general window position (see #0316)
CH = number of columns to offset from position specified by DL
CL = number of rows to offset from position specified by DL
Return: nothing

Bitfields for TopView general window position:
Bit(s) Description (Table 0316)
0,1 horizontal position
00 = current, 01 = center, 10 = left, 11 = right
2,3 vertical position
00 = current, 01 = center, 10 = top, 11 = bottom
4 don't redraw screen if set
5-7 not used
--------Q-151024-----------------------------
INT 15 - TopView - "GETBUF" - GET VIRTUAL SCREEN INFO
AX = 1024h
BX = segment of object handle for window
(0 = use default)
Return: ES:DI -> virtual screen
CX = size of virtual screen in bytes
DL = 00h text screen
01h graphics screen
SeeAlso: INT 10/AH=FEh,INT 21/AH=2Bh/CX=4445h
--------Q-151025-----------------------------
INT 15 - TopView - "USTACK" - SWITCH BACK TO USER'S STACK
AX = 1025h
Return: stack switched back
Notes: call only after having switched to internal stack with AX=101Ah
while TopView requires many API calls to be executed while on the
task's private stack, DESQview allows those calls to be executed
regardless of the current stack
SeeAlso: AX=101Ah
--------Q-1510-------------------------------
INT 15 - DESQview (TopView???) - UNIMPLEMENTED IN DV 2.x
AH = 10h
AL = 26h thru 2Ah
Return: pops up "Programming error" window in DV 2.x
--------Q-15102B-----------------------------
INT 15 - DESQview v2.00+ (TopView???) - "POSTTASK" - AWAKEN TASK
AX = 102Bh
BX = segment of object handle for task
Return: nothing
Note: forces a task which is waiting on its objectq to continue by placing
the handle for the task on the objectq
SeeAlso: AX=101Dh,AX=101Eh,INT 21/AH=82h
--------Q-15102C-----------------------------
INT 15 - DESQview v2.00+ - "NEWPROC" - START NEW APPLICATION IN NEW PROCESS
AX = 102Ch
ES:DI -> contents of .PIF/.DVP file (see #0317)
BX = size of .PIF/.DVP info
Return: BX = segment of object handle for new task
0000h on error
SeeAlso: AX=DE24h,INT 21/AH=4Bh

Format of .PIF/.DVP file:
Offset Size Description (Table 0317)
00h BYTE reserved (0)
01h BYTE checksum of bytes 02h through 170h
02h 30 BYTEs blank-padded program title
20h WORD maximum memory to allocate to partition in KB
22h WORD minimum memory required in KB
24h 64 BYTEs ASCIZ program pathname
64h BYTE default drive letter ('A',...)
65h 64 BYTEs ASCIZ default directory name
A5h 64 BYTEs ASCIZ program parameters
E5h BYTE initial screen mode (0-7) (see also offset 189h)
E6h BYTE number of text pages used
E7h BYTE number of first interrupt to save
E8h BYTE number of last interrupt to save
E9h BYTE rows in virtual screen buffer
EAh BYTE columns in virtual screen buffer
EBh BYTE initial window position, row
ECh BYTE initial window position, column
EDh WORD system memory in KB
EFh 64 BYTEs ASCIZ shared program name
12Fh 64 BYTEs ASCIZ shared program data file
16Fh BYTE program flags 1 (see #0318)
170h BYTE flags2
bit 6: uses command-line parameters in field at A5h
bit 5: swaps interrupt vectors
---information unique to .DVP files---
171h 2 BYTEs keys to use on open menu
173h WORD size of script buffer in bytes
175h WORD automatically give up CPU after this many tests for keyboard
input in one clock tick (default 0 = never)
177h BYTE nonzero = "uses own colors"
178h BYTE nonzero if application swappable
179h 3 BYTEs reserved (0) according to Quarterdeck documentation
in actual .DVP files, frequently 01h
17Ch BYTE nonzero to automatically close on exit (see also #0320)
17Dh BYTE nonzero if copy-protect floppy is required
---information unique to DESQview 2.0+---
17Eh BYTE .DVP version number
00h DESQview v1.2+
01h DESQview v2.0+
02h DESQview v2.2+
17Fh BYTE reserved (0)
180h BYTE initial number of rows in physical window
181h BYTE initial number of columns in physical window
182h WORD maximum expanded memory to allow, in KB
184h BYTE DVP program flags 3 (see #0319)
185h BYTE keyboard conflict level (0-4 for DV<2.26, 00h-0Fh for DV2.26+)
(see #0321)
186h BYTE number of graphics pages used
187h WORD extra system memory size
189h BYTE initial screen mode (FFh = default) (overrides offset E5h)
---information unique to DESQview 2.2+---
18Ah BYTE serial port usage
FFh uses all serial ports
00h no serial ports
01h only COM1
02h only COM2
18Bh BYTE DVP program flags 4 (see #0320)
18Ch BYTE protection level for 386 machines
18Dh 19 BYTEs reserved (0) for regular DESQview
---information unique to DESQview/X 1.0---
18Dh BYTE X flags
bits 3-7: unused (0)
bit 2: don't display wait message when opening window
bit 1: don't display DOS window
bit 0: (XNEWPROC) use DOS client layer (DOS-to-X)
(NEWPROC) inherit DOS client layer usage
18Eh BYTE X keyboard behavior (0-3)
18Fh BYTE font scaling
00h fixed fonts
01h scalable fonts
190h 10 BYTEs reserved (0)
19Ah WORD length of data follownig XDVP signature
19Ch 4 BYTEs signature "XDVP"
1A0h N BYTEs list of variable length records (see #0322)

Bitfields for .PIF/.DVP program flags 1:
Bit(s) Description (Table 0318)
7 writes text directly to screen
6 runs in foreground only (see also offset 184h)
5 uses math coprocessor
4 accesses system keyboard buffer directly
3-1 reserved (0)
0 swappable
SeeAlso: #0317,#0319,#0320

Bitfields for .DVP program flags 3:
Bit(s) Description (Table 0319)
7 automatically assign window position
5 maximum memory value has been specified
4 disallow "Close" command
3 foreground-only when doing graphics
set by DV 2.3+ when "Runs in Background" = "D" (undoc)
2 don't virtualize (see also #0320)
1 foreground-only during DOS calls
set by DV 2.3+ when "Runs in Background" = "D" (undoc)
SeeAlso: #0317,#0318,#0320

Bitfields for .DVP program flags 4:
Bit(s) Description (Table 0320)
7 automatically close application on exit if .COM or .EXE specified
(see also #0317 offset 17Ch)
6 swappable if not using serial ports
5 start program with window hidden (v2.26+)
4 start program in background (v2.26+)
3 virtualize text (see also #0319)
2 virtualize graphics (see also #0319)
1 share CPU when foreground
0 share EGA when foreground and zoomed
SeeAlso: #0317,#0318,#0319

Bitfields for DESQview keyboard conflict level:
Bit(s) Description (Table 0321)
3 save/restore entire INT 09 handler state every taskswtch
2 take special precautions for programs which read the BIOS keyboard
buffer directly from memory
1 never indicate keystroke available during scripts/xfers
0 only indicate keystroke available every sixth poll
SeeAlso: #0317

Format of DESQview/X variable length record:
Offset Size Description (Table 0322)
00h WORD length of following record, 0000h if end of record list
02h BYTE record type
01h script filename, up to 64 characters
02h command-line parameters (allows >64 characters on cmdline)
03h environment inheritance
04h environment string
05h starting window position
---types 01h,02h,04h---
03h N BYTEs ASCII data
---type 03h---
03h BYTE inheritance
00h do not inherit
01h inherit environment
---type 05h---
03h N BYTEs ASCII copy of fields as typed into DVPMAN, separated by commas:
starting row, starting column, starting height, starting width
Note: if there are multiple occurrences of record types 01h, 02h, or 03h,
only the last instance of each type is used; multiple occurrences of
type 04h are concatenated
SeeAlso: #0317
--------Q-15102D-----------------------------
INT 15 - DESQview v2.00+ - "KMOUSE" - KEYBOARD MOUSE CONTROL
AX = 102Dh
BL = subfunction
00h determine whether using keyboard mouse
Return: BL = 00h using real mouse
01h using keyboard mouse
01h turn keyboard mouse on
02h turn keyboard mouse off
--------Q-15102E-----------------------------
INT 15 - DESQview v2.40+ - ALLOCATE SYSTEM MEMORY
AX = 102Eh
BX = number of bytes
Return: AX = status
0000h successful
ES:DI -> allocated system memory (see #0323)
0001h failed
ES:DI = 0000h:0000h
Note: under DV 2.42, this call is identical to AX=1001h
SeeAlso: AX=1001h,AX=1002h,AX=DE0Ch

Format of DESQview system memory block header:
Offset Size Description (Table 0323)
00h WORD segment of next header or 0000h
02h WORD segment of previous header or 0000h
04h WORD size of block in paragraphs, including header
06h BYTE availability flag (00h in use, 01h free)
Note: this header is located one paragraph before the memory block proper
SeeAlso: #0313
--------Q-1511-------------------------------
INT 15 - TopView commands
AH = 11h
AL = various (except 17h)
Note: in DESQview 2.x, these function calls are identical to AH=DEh, so
see those below
SeeAlso: AH=DEh
--------T-1511-------------------------------
INT 15 - VMiX - "sys_system" - EXECUTE SHELL SYSTEM COMMANDS
AH = 11h
STACK: DWORD pointer to ASCIZ string containing a VMiX shell
request (max len = 127)
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=0Ch"VMiX"
--------T-1511-------------------------------
INT 15 - MultiDOS Plus - TURN OFF AltZ TOGGLE
AH = 11h
Note: disables the Alt-Z MultiDOS command/program-selection hotkey
SeeAlso: AH=12h"MultiDOS"
Index: hotkeys;MultiDOS Plus
--------Q-151117BX0000-----------------------
INT 15 - DESQview v2.20+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT
AX = 1117h
BX = 0000h get current mapping context without setting
nonzero set new mapping context
Return: BX = mapping context in effect before call
interrupts enabled
Notes: this function differs from AX = DE17h for DESQview v2.20 through 2.25
mapping contexts determine conventional-memory addressability; setting
a mapping context ensures that the associated program and data areas
are in memory for access. Usable by drivers, TSRs and shared
programs.
caller need not be running under DESQview, but must ensure that the
stack in use will not be mapped out by the call
SeeAlso: AX=DE17h,INT 2F/AX=1685h
--------m-1511DE-----------------------------
INT 15 - DESQview - QEXT.SYS - INSTALLATION CHECK
AX = 11DEh
Return: CF clear if installed
AX = segment at which QEXT.SYS is located
Desc: QEXT.SYS is Quarterdeck's HMA manager for DESQview; more recent
versions also implement the XMS standard
Note: a private entry point (see #0324) may be found by searching the
beginning of the returned segment for the signature string
"QUARTERDECK EXTENDED MEMORY MANAGER 286"; the word immediately
prior to the signature contains the QEXT version number in BCD,
and the word prior to that contains the offset within the QEXT
code segment of the private entry point
SeeAlso: INT 2F/AX=4310h,INT 67/AH=3Fh

(Table 0324)
Call QEXT.SYS private entry point with:
AH = 00h ???
AH = nonzero ???
--------T-1512-------------------------------
INT 15 - VMiX - "sys_sleep" - PUT PROCESS TO SLEEP
AH = 12h
STACK: WORD process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=03h"MultiDOS",AX=101Dh,AH=13h"VMiX"
--------T-1512-------------------------------
INT 15 - MultiDOS Plus - TURN ON AltZ TOGGLE
AH = 12h
Note: enables the Alt-Z MultiDOS command/program-selection hotkey
SeeAlso: AH=11h"MultiDOS"
Index: hotkeys;MultiDOS Plus
--------Q-1512--BH00-------------------------
INT 15 - TopView - SEND MESSAGE - "HANDLE" - RETURN OBJECT HANDLE
AH = 12h
BH = 00h
BL = which handle to return
00h handle in DWORD on top of stack
01h current task's window handle
02h given task's mailbox handle (task's handle on stack)
03h current task's mailbox handle
04h given task's keyboard handle (task's handle on stack)
05h current task's keyboard object handle
06h given task's OBJECTQ handle (task's handle on stack)
07h current task's OBJECTQ handle
08h \
thru > return 0000:0000 under DV < 2.26
10h /
0Ch (2.26+) task owning object with handle in DWORD on top of stack
0Dh (2.26+) task handle of owner (parent) of current task
Return: DWORD on top of stack is object handle
Note: BL=0Ch,0Dh returns 00000000h if the object is not open (keyboard,
mailbox, panel, pointer, and timer objects) or is an orphan (task,
window)
SeeAlso: AH=12h/BH=02h,AH=12h/BH=80h
--------Q-1512--BH01-------------------------
INT 15 - TopView - SEND MESSAGE - "NEW" - CREATE NEW OBJECT
AH = 12h
BH = 01h
BL = object type to create
00h (DV 2.0x only) handle is DWORD on top of stack
01h (DV 2.0x only) use task's window handle
02h (DV 2.0x only) given task's mailbox (task's handle on stack)
03h (DV 2.0x only) current task's mailbox
04h (DV 2.0x only) given task's keyboard (task's handle on stack)
05h (DV 2.0x only) current task's keyboard object
08h WINDOW class
09h MAILBOX class
0Ah KEYBOARD class
0Bh TIMER object (counts down 32-bit time in 10ms increments)
0Fh POINTER object
10h PANEL object
STACK: (if window object or WINDOW class)
DWORD address to jump to (no new task if high word == 0)
DWORD (reserved) 0 = non-task window, FFFFh = task window
DWORD bytes for task's private stack (FFFFh == default of 0100h)
DWORD bytes system memory for input buffer for READ/READN
(0 == none, -1 == default--same as logical window size)
DWORD window size, columns
DWORD window size, rows
DWORD length of window title
DWORD address of window title
Return: DWORD on top of stack is new object handle
Notes: if a new task is created, it is started with
AX = BX = SI = DI = BP = 0
DX:CX = handle of parent task
DS = ES = SS = segment of private stack (and new task's handle)
new windows are orphans, inherit the colors/hidden status of the
creating task's window, and are placed in the upper left hand corner
of the screen but not automatically redrawn
new keyboards are closed, and have all object bits cleared except for
the hardware cursor bit
SeeAlso: AH=12h/BH=02h,AH=12h/BH=81h
--------Q-1512--BH02-------------------------
INT 15 - TopView - SEND MESSAGE - "FREE" - FREE AN OBJECT
AH = 12h
BH = 02h
BL = object
00h handle in DWORD on top of stack
window: close window and free
timer: free timer
panel: free panel object
pointer: free pointer
01h task's window handle - kills task, never returns
02h given task's mailbox (task's handle on top of stack)
03h current task's mailbox
04h given task's keyboard (task's handle on top of stack)
05h current task's keyboard object
Notes: when a window is freed, its keyboard and pointer objects are freed;
task windows also free any mailbox, objectq, and panel objects held
by the task and any child tasks
if the keyboard being freed is the default keyboard for a task, this
call is equivalent to CLOSE
panel and pointer objects are automatically closed if open
SeeAlso: AH=12h/BH=01h,AH=12h/BH=0Dh,AH=12h/BH=82h
--------Q-1512--BH03-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDR" - GET HANDLE OF MESSAGE SENDER
AH = 12h
BH = 03h
BL = object
00h mailbox handle in DWORD on top of stack
02h sender of last msg read from mailbox (task's handle on stack)
03h sender of last msg read from current task's mailbox
Return: DWORD on stack is task handle of message sender
SeeAlso: AH=12h/BH=00h,AH=12h/BH=83h
--------Q-1512--BH03-------------------------
INT 15 - DESQview v2.26+ - "CONNECT" - CONNECT TWO WINDOWS
AH = 12h
BH = 03h
BL = window to be connected
00h handle of window to be attached in DWORD on top of stack
01h attach current task's main window
STACK: DWORD handle of window to attach to or 00000000h to detach
Return: STACK popped
Notes: when two windows are connected, both will move if the user moves either
multiple windows may be attached to a single window, but each window
may only be attached to one window at a time
SeeAlso: AH=12h/BH=83h
--------Q-1512--BX0300-----------------------
INT 15 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY
AH = 12h
BX = 0300h
STACK: DWORD handle of panel object (see #0325)
Return: STACK: DWORD length of directory (always multiple of 14 bytes)
DWORD address of directory
Note: a null string is returned if the object is not open
SeeAlso: AH=12h/BX=0400h"APPLY",AH=12h/BH=83h

Format of TopView panel file:
Offset Size Description (Table 0325)
00h 2 BYTEs C0h C3h
02h BYTE number of panels in file
03h for each panel in file:
8 BYTEs blank-padded panel name
DWORD panel offset in file
WORD panel length
data for panels (each consists of one or more window/query/manager
streams); first byte of each panel must be 1Bh, fifth byte must be
E5h
--------Q-1512--BH04-------------------------
INT 15 - TopView - SEND MESSAGE - "READ" - READ NEXT LOGICAL LINE OF WINDOW
AH = 12h
BH = 04h
BL = window to read from
00h handle is DWORD on top of stack
01h use calling task's default window
0Ch (DV 2.26+) default window of task owning handle on top of stack
0Dh (DV 2.26+) default window of parent task of current task
Return: STACK: DWORD number of bytes read
DWORD address of buffer
Notes: reading starts at the current logical cursor position; the cursor is
updated to point at the character following the last one read
any translucent blanks (FFh) which are visible on screen are changed
to the character which is seen through them
the string produced by the read is placed in an input buffer which may
be reused by the next READ or READN of a window
window stream opcodes D8h and D9h determine whether the read returns
characters or attributes
SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=12h,AH=12h/BH=84h
--------Q-1512--BH04-------------------------
INT 15 - TopView - SEND MESSAGE - "READ" - GET NEXT RECORD FROM OBJECT
AH = 12h
BH = 04h
BL = object
00h handle is DWORD on top of stack
mailbox: wait for and get next message
keyboard: wait for and get pointer to next input buffer
pointer: wait for and get next message
02h get next message from mailbox (task's handle on top of stack)
03h get next message from current task's mailbox
04h get the next input from keyboard (handle on top of stack)
05h get the next input from task's default keyboard
06h wait for input from any object in OBJECTQ (handle on stack)
07h wait for input from any object in task's default OBJECTQ
Return: STACK: (if objectq) DWORD handle of object with input
(otherwise) DWORD number of bytes
DWORD address of pointer message (see #0326)
Notes: for a keyboard in keystroke mode, the input buffer is a single byte
containing the character code as returned by the BIOS; the BIOS scan
code is available via the STATUS call if the character is zero
for a keyboard in field mode, the input buffer format is determined
by the field table header for the window the keyboard is attached to
keyboard input buffers and mailbox message buffers may be invalidated
by the next READ, ERASE, CLOSE, or FREE message to the same object
SeeAlso: AH=12h/BH=05h"OBJECT",AH=12h/BH=84h

Format of DESQview pointer message:
Offset Size Description (Table 0326)
00h WORD row
02h WORD column
04h BYTE status (see #0327)
05h BYTE field number or zero (APILEVEL >= 2.00 only)

Bitfields for DESQview pointer status:
Bit(s) Description (Table 0327)
7-2 number of clicks-1 if multiple-click mode active
7 set when press/release mode active and button pressed
6 set when press/release mode active and button released
1-0 button pressed (00=none,01=button1,10=button2)
--------Q-1512--BX0400-----------------------
INT 15 - TopView - SEND MESSAGE - "READ" - WAIT FOR TIMER TO EXPIRE
AH = 12h
BX = 0400h
STACK: DWORD timer's handle
Return: after timer expires
STACK: DWORD time in 1/100 sec after midnight when timer expired
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=84h
--------Q-1512--BX0400-----------------------
INT 15 - TopView - SEND MESSAGE - "APPLY" - WRITE PANEL TO WINDOW
AH = 12h
BX = 0400h
STACK: DWORD handle of panel object
DWORD window's handle (or 0 for current task's window)
DWORD length of panel name
DWORD pointer to panel name
Return: STACK: DWORD handle of window which was used
DWORD handle of keyboard or 0
Notes: status of APPLY may be checked with STATUS message
panel MUST have the following format
first byte must be 1Bh (i.e. must start with a stream)
first opcode in stream must be E5h
single byte arg of opcode is interpreted thus:
bits 7,6 11 means create new window
10 means create new field table for existing window
01 means use existing window and field table
bit 5 if set, panel contains a field table
(creates a new keyboard and puts it in field mode)
bit 4 if set, panel contains input fields
bit 3 if set, panel contains select fields but no input fields
if the panel contains input or select fields, a keyboard handle is
returned; either the window's current open keyboard or a
newly-created keyboard object. The caller should read that keyboard
to obtain input from the panel.
SeeAlso: AH=12h/BH=84h
--------Q-1512--BH05------------------------
INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE TO OBJECT
AH = 12h
BH = 05h
BL = object
00h handle is DWORD on top of stack
timer: start timer to end at a specified time
keyboard: add input buffer to queue
pointer: move pointer icon to specified position
02h send message by value/status=0 to mbox (task's handle on stack)
03h send message by value/status=0 to current task's mailbox
04h add input buffer to KEYBOARD queue (handle on top of stack)
05h add input buffer to task's default KEYBOARD queue
06h add an object to OBJECTQ (handle on top of stack)
07h add an object to task's default OBJECTQ
STACK: (if mailbox) DWORD length
DWORD address
(if keyboard) DWORD status (scan code in keystroke mode)
DWORD length (should be 1 in keystroke mode)
DWORD address
(if objectq) DWORD handle of object to add
(if timer) DWORD 1/100ths seconds since midnight (actually
only accurate to 1/18 sec)
(if pointer) DWORD column relative to origin of window
DWORD row relative to origin of window
Notes: under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h)
the data and status written to a keyboard object must match the format
returned by the keyboard object in the current mode
the pointer position is scaled according to the current scaling factors
SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h
--------Q-1512--BH05-------------------------
INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE STRING TO WINDOW
AH = 12h
BH = 05h
BL = window to write to
00h DWORD on top of stack is window handle
01h write string to task's default window
0Ch (DV 2.26+) default window of task owning handle on top of stack
0Dh (DV 2.26+) default window of parent of current task
STACK: DWORD object handle if handle passed on stack
DWORD total length of string (high word == 0)
DWORD address of string to display (see #0328)
Return: indicated actions performed
a. non-control characters are displayed (opcodes DEh and DFh control
whether the attributes are left or changed to the current attrib)
b. CR/LF/BS/Tab cause the usual cursor movement
c. ESC starts a data structure with additional commands if following
byte is less than 20h; otherwise, it is written to the window
STACK: DWORD handle of new window if window stream opcode E6h
else nothing
SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h

Format of stream data structure:
Offset Size Description (Table 0328)
00h BYTE 1Bh magic value identifying start of stream
01h BYTE stream type (00h, 01h, 10h, 14h-1Fh legal)
(see #0329,#0335,#0336,#0337)
02h WORD length of remainder of stream in bytes
var-length fields follow, each an OPCODE followed by
zero or more args

(Table 0329)
Values for MODE 00h (set or display values) "WINDOW STREAM" opcodes:
Opcodes:args
00h display 20h blanks with the default attribute
01h-1Fh display OPCODE blanks with the default attribute
20h display char with default attribute 20h times
BYTE char to repeat
21h-3Fh display char with default attribute OPCODE-20h times
BYTE char to repeat
40h display 20h blanks with specified attribute
BYTE attribute of blanks
41h-5Fh display OPCODE-40h blanks with specified attribute
BYTE attribute of blanks
60h display next 20h characters
20h BYTEs characters to display
61h-7Fh display next OPCODE-60h characters
N BYTEs characters to display
80h-87h display N blanks with default attribute
BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE)
[000h means 800h]
88h-8Fh display N copies of the character
BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE)
[000h means 800h]
BYTE character to repeat
90h-97h display N blanks with specified attribute
BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE)
[000h means 800h]
BYTE attribute
98h-9Fh display string at logical cursor pos
BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE)
[000h means 800h]
N BYTEs string to display
A0h set logical cursor row
BYTE row number (0 is top)
A1h set logical cursor column
BYTE column number (0 is leftmost)
A2h set top edge of scrolling region
BYTE row
A3h set left edge of scrolling region
BYTE column
A4h set row of physical window position
BYTE line
A5h set column of physical window position
BYTE column
A6h set height of physical window
BYTE number of rows
A7h set width of physical window
BYTE number of columns
A8h set viewport row
BYTE row
A9h set viewport column
BYTE column
AAh set virtual screen height [contents of window unpredictable after]
BYTE rows

ABh set virtual screen width [contents of window unpredictable after]
BYTE columns
ACh-AEh unused
AFh set compatible/preferred video modes
BYTE compatibility/preference mask
bit 7 compatible with monochrome
bit 6 compatible with color text, EGA/VGA graphics
bit 5 compatible with medium-resolution CGA graphics
bit 4 compatible with high-resolution CGA graphics
bit 3 prefer monochrome
bit 2 prefer color text, EGA/VGA graphics
bit 1 prefer medium-resolution CGA graphics
bit 0 prefer high-resolution CGA graphics
B0h move logical cursor down
BYTE number of rows (signed, negative values move up)
[if rows=0 and hardware cursor owner, update hardware cursor]
B1h move logical cursor right
BYTE number of columns (signed, negative values move left)
[if cols=0 and hardware cursor owner, update hardware cursor]
B2h shift top edge of scrolling region
BYTE number of rows (signed)
B3h shift left edge of scrolling region
BYTE number of columns (signed)
B4h shift physical window down
BYTE number of lines (signed)
B5h shift physical window right
BYTE number of columns (signed)
B6h expand physical window vertically
BYTE number of lines (signed)
B7h expand physical window horizontally
BYTE number of columns (signed)
B8h adjust viewport row
BYTE number of rows (signed)
B9h adjust viewport column
BYTE number of columns (signed)
BAh adjust virtual screen height [contents of window unpredict after]
BYTE number of rows to increase (signed)
BBh adjust virtual screen width [contents of window unpredictbl after]
BYTE number of columns to increase (signed)
BCh-BFh reserved (currently unused)
C0h set logical cursor position
BYTE row number (0 is top border)
BYTE column number (0 is left border)
C1h set top left corner of scrolling region
BYTE row
BYTE column
C2h set physical window pos
BYTE upper left row (no top border if 0)
BYTE upper left column (no left border if 0)
C3h set current window size
BYTE number of rows
BYTE number of columns
C4h set upper left corner of viewport (portion of virtual screen displayed
in window)
BYTE row
BYTE column
C5h set size of virtual screen [contents unpredictable afterwards]
BYTE number of rows
BYTE number of columns
C6h unused
C7h unused
C8h set logical cursor relative to current position
BYTE number of rows to move down (signed)
BYTE number of columns to move right (signed)
[if rows=cols=0 and hardware cursor owner, update hardw cursor]
C9h shift top left corner of scrolling region
BYTE number of rows (signed)
BYTE number of columns (signed)
CAh set window pos relative to current position
BYTE number of rows to shift down (signed)
BYTE number of columns to shift right (signed)
CBh set window size relative to current size
BYTE number of rows to expand (signed)
BYTE number of cols to expand (signed)
CCh shift viewport relative to current position
BYTE rows to shift (signed)
BYTE cols to shift (signed)
CDh resize virtual screen
BYTE number of rows to expand (signed)
BYTE number of columns to expand (signed)
CEh scroll text when using E8h-EBh/F8h-FBh opcodes (default)
CFh scroll attributes when using E8h-EBh/F8h-FBh opcodes
D0h allow window frame to extend beyond screen
D1h always display a complete frame, even if window extends beyond edge of
screen
D2h allow DV to change logical colors on video mode switch (default)
D3h application changes logical attributes
D4h window is visible [must redraw to actually make visible]
D5h window is hidden [must redraw to actually remove]
D6h window has frame (default)
D7h window unframed [must redraw to actually remove frame]
D8h READ/READN will read characters from window (default)
D9h READ/READN will read attributes from window
DAh use logical attributes, which may be remapped (see #0330)
DBh use physical attributes for characters
DCh enable special actions for control characters (default)
DDh disable special control char handling, all chars displayable by BIOS TTY
call
DEh write both character and attribute (default)
DFh write character only, leave attribute untouched
E0h repeat following commands through E1h opcode
BYTE number of times to repeat (00h means 256 times)
E1h end of commands to repeat, start repeating them
E2h set current output color
BYTE color
E3h clear virtual screen from scroll origin to end using current color
E4h redraw window
E5h select menu style
BYTE style (normally 18h)
bits 5,4 = 01 use two-letter menu entries for remainder of
this stream
E5h (panel file only)
BYTE modifier
bits 7,6 = 11 panel stream creates new window
= 10 panel defines new field table for existing window
= 01 panel stream uses existing window & field table
bit 5 = 1 stream contains a field table (create kyboard object)
bit 4 = 1 stream defines input fields (create keyboard object)
bit 3 = 1 stream defines select fields but not input fields
bit 2 = 1 stream defines exclusive input window (DV 2.2)
bit 1 reserved
bit 0 reserved
E6h create new window and perform rest of manipulations in new window
BYTE number of rows
BYTE number of columns
Return: DWORD object handle of new window returned on stack at end
Note: the window is created with a physical size of 0x0 at the
same position as the window to which this stream was sent
E7h no operation
E8h scroll area up (top left corner defined by opcode C1h)
BYTE height
BYTE width
E9h scroll area down (top left corner defined by opcode C1h)
BYTE height
BYTE width
EAh scroll area left (top left corner defined by opcode C1h)
BYTE height
BYTE width
EBh scroll area right (top left corner defined by opcode C1h)
BYTE height
BYTE width
ECh set logical attributes for window contents
BYTE video modes command applies to
bit 7 monochrome
bit 6 color text, EGA/VGA graphics
bit 5 medium-resolution CGA graphics
bit 4 high-resolution CGA graphics
BYTE which attributes to set
bit 7 if set, copy single following byte to indicated attribs
bits 4-6 number of first attribute to change - 1
bits 0-3 number of consecutive attributes to change
N BYTEs new attributes
EDh set logical attributes for window frame
BYTE video modes command applies to (see opcode ECh)
BYTE which attributes to set
bit 7 if set, copy single following byte to indicated attrs
bits 4-6 number of first attribute to change - 1
bits 0-3 number of consecutive attributes to change
N BYTEs new attributes
attributes
1 = top left corner
2 = top right corner
3 = bottom left corner
4 = bottom right corner
5 = top edge
6 = bottom edge
7 = left edge
8 = right edge
EEh set characters for window frame
BYTE video modes command applies to (see opcode ECh)
BYTE which characters to set
bit 7 if set, copy single following byte to indicated chars
bits 4-6 number of first character to change - 1
bits 0-3 number of consecutive characters to change
N BYTEs new chars (same relative position as attributes above)
EFh set window name
BYTE length of name (should be in range 0 to logical screen width)
N BYTEs name
F0h clear input field to blanks
BYTE field number
F1h fill input field with character
BYTE field number
BYTE char
F2h set color of input field
BYTE field number (1-N)
BYTE attribute
F3h set initial contents of input field
BYTE field number (1-N)
N BYTEs enough chars to exactly fill field as defined by op FFh
F4h position cursor to start of specific input field
BYTE field number (1-N)
F5h change field table entry
BYTE field number
7-8 BYTEs field table entry (see opcode FFh below)
F6h set field type
BYTE field number
BYTE type
00h inactive
40h output field
80h input field
C0h deselected field
C2h selected field
F7h "broadcast write" write data to fields with program output bit set in
the field table entry, in field number order
N BYTEs (total length of all program output fields)
F8h scroll field up a line
BYTE field number
F9h scroll field down a line
BYTE field number
FAh scroll field left
BYTE field number
FBh scroll field right
BYTE field number
FCh set field table header
6 BYTEs field table header (see #0331)
FDh reset modified bit for all fields
FEh reset selected and modified bits for all fields
FFh set up input fields
6 BYTEs table header (see #0331)
7/8N BYTEs the field table entries, one for each field (see #0333)
Note: DESQview uses and updates the actual copy of the information
which is contained in the stream. Thus this info must remain
intact until after the data entry is complete.

(Table 0330)
Values for TopView logical attributes:
01h normal text
02h highlighted normal text
03h help text
04h highlighted help text
05h error message
06h highlighted error message
07h emphasized text
08h marked text
9-16 reverse video versions of 1-8

Format of TopView field table header:
Offset Size Description (Table 0331)
00h BYTE number of fields (must be <= existing number of fields)
01h BYTE screen behavior bits (see #0332)
02h BYTE current input field (updated by DESQview)
03h BYTE current select field (updated by DESQview)
04h BYTE attribute for select fields when they are pointed at
05h BYTE attribute for select fields which have been selected

Bitfields for TopView screen behavior bits:
Bit(s) Description (Table 0332)
7 reserved
6 menu items may be selected via keyboard
5 left mouse button in "status" mode (press anywhere in window
immediately returns control to application)
4 right mouse button in "status" mode
3 select fields return contents or blanks rather than 'Y' or 'N'
2 modified bits reset on return to application
1-0 type of data returned
00 no data returned on read of keyboard
01 data returned as array of characters containing all fields packed
together, with no field numbers
10 data returned as numbered variable-length records for all fields
11 data returned as numbered variable-length records for the fields
which were modified

Format of TopView field table entry:
Offset Size Description (Table 0333)
00h BYTE start row \
01h BYTE start column \ if menu selection and start is to
02h BYTE end row / right or below end, select from kbd only
03h BYTE end column /
04h BYTE field type (see #0334)
05h BYTE modifier
if type is fill-in, then bit flags to determine behavior
bit 7 automatically enter CR when field full
bit 6 move to next field when current field is full
bit 5 enter text from right end (for numbers)
bit 4 force input to uppercase
bit 3 clear old contents on first keystroke
bit 2 input returned when cursor moves out of
modified field ("validate", API level 2.02+)
bit 1 reserved
bit 0 reserved
if select field, first key to press to activate
00h if have to point-&-click or is an extended-ASCII
keystroke (only if two-key menus enabled)
06h BYTE (select field only) normal color of field
07h BYTE second key for select field. This byte is present iff
two-letter menu entries selected with opcode E5h, and in that
case is present regardless of field type

Bitfields for TopView field type:
Bit(s) Description (Table 0334)
7,6 field class
00 inactive (non-entry) field
01 echos keystrokes input to make menu selection
10 fill-in field
11 select field
5 field can be filled by broadcast write (F7h opcode)
4 reserved
3 reserved
2 reserved
1 set if field selected
0 set if field modified

(Table 0335)
Values for MODE 01h "QUERY STREAM" opcodes:
(valid only for those opcodes listed here)
A0h return logical cursor row in next byte
A1h return logical cursor column in next byte
A2h return top row of scrolling region in next byte
A3h return left column of scrolling region in next byte
A4h return row of physical window origin in next byte
A5h return column of physical window origin in next byte
A6h return height of physcial window in next byte
A7h return width of physical window in next byte
A8h return row of viewport origin in next byte
A9h return column of viewport origin in next byte
AAh return height of virtual screen in next byte
ABh return width of virtual screen in next byte
AFh return current video mode in next byte
C0h return current logical cursor position in next two bytes
C1h return top left corner of scrolling region in next two bytes
C2h return current window position in next two bytes
C3h return current window size in next two bytes
C4h return current viewport origin in next two bytes
C5h return current virtual screen size in next two bytes
D0h \ overwritten with D0h if frames may fall off screen edge
D1h / D1h if frames always displayed entirely
D2h \ overwritten with D2h if DESQview controls color palette
D3h / D3h if application changes color palette
D4h \ overwritten with D4h if window visible
D5h / D5h if window hidden
D6h \ overwritten with D6h if window has frame
D7h / D7h if window unframed
D8h \ overwritten with D8h if reading characters from window
D9h / D9h if reading attributes from window
DAh \ overwritten with DAh if using logical attributes
DBh / DBh if using physical attributes
DCh \ overwritten with DCh if TTY control char interpretation on
DDh / DDh if TTY control char interpretation off
DEh \ overwritten with DEh if writing both characters and attributes
DFh / DFh if leaving attributes untouched
E2h return current color in next byte
ECh get logical attributes for window contents
BYTE execute call if currently in specified video mode
bit 7 monochrome
bit 6 color text, EGA/VGA graphics
bit 5 medium-resolution CGA graphics
bit 4 high-resolution CGA graphics
BYTE which attributes to get
bit 7 unused???
bits 4-6 first attribute to get - 1
bits 0-3 number of consecutive attributes
N BYTEs buffer to hold attributes
EDh get logical attributes for window frame
BYTE execute call if currently in video mode (see opcode ECh)
BYTE which attributes to get
bit 7 unused???
bits 4-6 first attribute to get - 1
bits 0-3 number of consecutive attributes
N BYTEs buffer to hold attributes
EEh get characters for window frame
BYTE execute call if currently in video mode (see opcode ECh)
BYTE which attributes to get
bit 7 unused???
bits 4-6 first char to get - 1
bits 0-3 number of consecutive chars
N BYTEs buffer to hold chars
EFh return first N characters of current window name
BYTE max length of returned name
N BYTEs buffer to hold window name
F3h return contents of specified field
BYTE field number
N BYTEs buffer to hold field contents (size equal to field size)
F5h get field table entry
BYTE field number
7-8 BYTEs buffer to hold field table entry (see #0333)
Notes: DV < 2.26 always returns 7 bytes
DV 2.26+ w/ APILEVEL < 2.26 returns 8 bytes iff field table
is using 8-byte entries and eighth byte after F5h is E7h
(NOP); otherwise, 7 bytes are returned
DV 2.26+ w/ APILEVEL > 2.26 returns 7 or 8 bytes depending
on the field table entry size
F6h get type of a field
BYTE field number
BYTE type
FCh get field table header
6 BYTEs buffer to store field table header (see #0331)

(Table 0336)
Values for MODE 10h "MANAGER STREAM" opcodes (valid only for those listed):
00h allow window to be moved horizontally
01h allow window to be moved vertically
02h allow window to change width
03h allow window to change height
04h allow window to be scrolled horizontally
05h allow window to be scrolled vertically
06h allow "Close Window" menu selection for application
07h allow "Hide Window" menu selection for application
08h allow application to be suspended ("Rearrange/Freeze")
0Eh allow "Scissors" menu
10h allow DESQview main menu to be popped up
11h allow "Switch Windows" menu
12h allow "Open Window" menu
13h allow "Quit" menu selection
20h-33h opposite of 00h-13h, disallow specified action
40h notify if horizontal position of window changes
41h notify if vertical position of window changes
42h notify if width of window changes
43h notify if height of window changes
44h notify if window scrolled horizontally
45h notify if window scrolled vertically
46h notify if window is closed--program has to clean up and exit itself
47h notify if window is hidden
48h notify if "?" on main menu selected
49h notify if pointer message sent to window
4Ah notify if window is placed in foreground
4Bh notify if window is placed in background
4Ch notify if video mode changes
4Dh notify if "Scissors" menu "Cut" option selected
4Eh notify if "Scissors" menu "Copy" option selected
4Fh notify if "Scissors" menu "Paste" option selected
50h notify if DESQview main menu about to pop up
51h notify if DESQview main menu popped down
60h-71h opposite of 40h-51h: don't notify on specified event
84h attach window to parent task's window (both move together)
85h detach window from parent task's window (may move independently)
86h disable background operation for application
87h enable running in background
88h set minimum size of physical window
BYTE rows
BYTE columns
89h set maximum size of physical window
BYTE rows
BYTE cols
8Ah set primary asynchronous notification routine (see #0338)
DWORD address of routine, 0000h:0000h means none (see also below)
8Bh set async notification parameter
DWORD 32-bit value passed to 8Ah async routine in DS:SI
ACh (DV2.2+) perform regular select field attribute processing
ADh (DV2.2+) protect attributes in selected field from being lost
AEh make window default notify window for owning app (API level 2.00+)
AFh set selected field marker character
BYTE character to display at left edge of selected fields
BCh set standard field processing mode
BDh set alternate field processing mode (enables cursor pad for menus)
BEh disables changing reverse logical attributes with ECh opcode
BFh enables changing reverse logical attributes with ECh opcode
C0h make current window topmost in system
C1h force current process into foreground
C2h make current window topmost in process
C3h position mouse pointer relative to origin of current field
BYTE rows below upper left corner of field
BYTE columns to right of upper left corner of field
C4h position mouse pointer relative to origin of given field
BYTE field number
BYTE rows below upper left corner of field
BYTE columns to right of upper left corner of field
C5h orphan current window (also hides it)
Note: must be last in stream; all subsequent commands ignored
C6h show all windows for this process
C7h hide all windows for this process
C8h suspend process and hide all its windows
C9h force current process into background
CAh make current window bottom-most in process
CBh cancel current window manager operation, remove DV menu, give control
to topmost application
CCh orphan window and give it to the system for use as paste data
CEh reorder windows
DWORD pointer to null-terminated list of words; each word is segment
of object handle for a window
FFh no operation

(Table 0337)
Values for MODES 14h to 1Fh "USER STREAMS":
normally NOPs, but may be defined by SETESC message to invoke FAR
routines, one for each mode number
on entry to handler,
DS:SI -> first byte of actual stream (not header)
CX = number of bytes in stream
ES:DI = window's handle

(Table 0338)
Values asynchronous notification routine defined by man.stream 8Ah called with:
ES:DI = handle of window
DS:SI is 32-bit value set by 8Bh manager stream opcode
mailbox contains message indicating event
Opcode
40h horizontal movement
DWORD object handle of window
BYTE new row
BYTE new col
41h vertical movement
DWORD object handle of window
BYTE new row
BYTE new col
42h horizontal size change
DWORD object handle of window
BYTE new rows
BYTE new cols
43h vertical size change
DWORD object handle of window
BYTE new rows
BYTE new cols
44h scrolled horizontally
DWORD object handle of window
BYTE mouse row within window
BYTE mouse column within window
BYTE field mouse is on, 0 if none
BYTE amount moved: >0 right, <0 left, 0 done
45h scrolled vertically
DWORD object hande of window
BYTE mouse row within window
BYTE mouse column within window
BYTE field mouse is on, 0 if none
BYTE amount moved: >0 down, <0 up, 0 done
46h window close request
DWORD object handle of window
BYTE mouse pointer row
BYTE mouse pointer column
BYTE field mouse is on, 0 if none
47h application's windows hidden
48h Help for Program selected
DWORD object handle of window
BYTE mouse pointer row
BYTE mouse pointer column
BYTE field mouse is on, 0 if none
49h pointer message sent to window
DWORD pointer handle which received message
4Ah switched to window from another ("raise")
4Bh switched away from the window ("lower")
4Ch video mode changed
BYTE new BIOS video mode
4Dh Scissors/cUt selected
DWORD object handle of window
BYTE row of upper left corner
BYTE column of upper left corner
BYTE field number ul corner is in, 0=none
DWORD handle of orphaned window created with
copy of data from specified region
BYTE height of region
BYTE width of region
4Eh Scissors/Copy selected
DWORD object handle of window
BYTE row of upper left corner
BYTE column of upper left corner
BYTE field number ul corner is in, 0=none
DWORD handle of orphaned window created with
copy of data from specified region
BYTE height of region
BYTE width of region
4Fh Scissors/Paste selected
DWORD object handle of window
BYTE row of upper left corner
BYTE column of upper left corner
BYTE field number ul corner is in, 0=none
DWORD handle of orphaned window with data
BYTE height of region
BYTE width of region
Note: orphaned data window should be adopted or freed
when done
50h main menu about to pop up
51h main menu popped down
Return: all registers unchanged
--------Q-1512--BH06-------------------------
INT 15 - DESQview 2.20+ - SEND MESSAGE - "SETPRI" - SET PRIORITY WITHIN OBJECTQ
AH = 12h
BH = 06h
BL = object
00h object handle in DWORD on top of stack
mailbox, keyboard, pointer, or timer
(DV 2.50+) window
01h (DV 2.50+) current task's window
04h given task's keyboard (task's handle on top of stack)
05h current task's default keyboard
STACK: DWORD new priority of object in task's OBJECTQ
(new priority of task if window handle)
Notes: initially all objects have the same default value. Should only make
relative adjustments to this default value.
when changing priorities, all objects already on the objectq are
reordered
for window handles, only the non-blocked task(s) with the highest
priority receive CPU time under DESQview 2.50-2.52; the default
priority is 0Ah
SeeAlso: AH=12h/BH=07h,AH=12h/BH=87h
--------Q-1512--BH07-------------------------
INT 15 - DESQview 2.20+ - SEND MESSAGE - "GETPRI" - GET PRIORITY WITHIN OBJECTQ
AH = 12h
BH = 07h
BL = object
00h object handle in DWORD on top of stack
mailbox, keyboard, pointer, or timer
(DV 2.50+) window
01h (DV 2.50+) current task's window
04h given task's keyboard (task's handle on top of stack)
05h current task's default keyboard
Return: STACK: DWORD object priority
Note: initially all objects have the same default value. Should only make
relative adjustments to this default value.
SeeAlso: AH=12h/BH=06h
--------Q-1512--BH08-------------------------
INT 15 - TopView - SEND MESSAGE - "SIZEOF" - GET OBJECT SIZE
AH = 12h
BH = 08h
BL = object
00h handle in DWORD on top of stack
window: total character positions in window
timer: elapsed time since timer started
pointer: number of messages queued to pointer object
panel: number of panels in panel file
keyboard: number of input buffers queued
01h total chars in current task's default window
02h number of messages in task's mailbox (task's handle on stack)
03h number of messages in current task's mailbox
04h number of input buffers queued in task's kbd (handle on stack)
05h number of input buffers queued for current task's default kbd
06h number of objects queued in OBJECTQ (task's handle on stack)
07h number of objects queued in current task's OBJECTQ
0Ch (DV 2.26+) total chars in window owning handle on top of stack
0Dh (DV 2.26+) total chars in parent task's window
Return: DWORD on top of stack is result
Note: for panel objects, a count of zero is returned if no panel file is open
for the object
SeeAlso: AH=12h/BH=04h,AH=12h/BH=09h
--------Q-1512--BH09-------------------------
INT 15 - TopView - SEND MESSAGE - "LEN" - GET OBJECT LENGTH
AH = 12h
BH = 09h
BL = object
00h handle in DWORD on top of stack
window: get chars/line
timer: get 1/100 seconds remaining before timer expires
mailbox: (DV/X) get number of bytes queued to mailbox
01h get number of chars/line in current task's default window
0Ch (DV 2.26+) get chars/line in window owning handle on top of stk
0Dh (DV 2.26+) get chars/line in parent task's window
Return: DWORD on top of stack is length
SeeAlso: AH=12h/BH=08h
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - WRITE CHARS AND ATTRIBS TO WINDOW
AH = 12h
BH = 0Ah
BL = window to write to
00h window handle is DWORD on top of stack
01h current task's default window
0Ch (DV 2.26+) default window of task owning handle on top of stack
0Dh (DV 2.26+) default window of parent of current task
STACK: DWORD count of attributes
DWORD address of attribute string
DWORD count of characters
DWORD address of character string
Notes: if one string is longer than the other, the shorter one will be reused
until the longer one is exhausted
the cursor is left just after the last character written
SeeAlso: AH=12h/BH=0Bh"WINDOW"
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - SEND MAILBOX MESSAGE/STAT BY VALUE
AH = 12h
BH = 0Ah
BL = mailbox to write to
00h handle is DWORD on top of stack
02h default mailbox of task whose handle is on top of stack
03h current task's default mailbox
STACK: DWORD status (low byte)
DWORD length of message
DWORD address of message
Notes: the message is copied into either system or common memory
insufficient memory normally causes the process to be aborted; under
DESQview 2.2+, failed writes may return CF set instead (see AX=DE15h)
SeeAlso: AH=12h/BH=0Bh"MAILBOX"
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - SET OBJECT BITS
AH = 12h
BH = 0Ah
BL = object
00h handle is DWORD on top of stack
timer: start timer for specified interval
pointer: set control flags (see #0340)
keyboard: set control flags (see #0339)
04h set control flags on KEYBOARD object (handle on top of stack)
05h set control flags on task's default KEYBOARD object
STACK: (if timer) DWORD duration in 1/100 seconds
(otherwise) DWORD bits to set
SeeAlso: AH=12h/BH=0Bh"OBJECT"

Bitfields for DESQview keyboard object bits:
Bit(s) Description (Table 0339)
15 reserved, can't be set
14 unused
13 reserved, can't be set
12-6 unused
5 (DV 2.2+) exclusive input
4 filter all keys (used with handler established by SETESC)
if 0, only keys that would normally be displayed are filtered
3 program continues executing while input in progress
2 insert mode active for field mode
1 hardware cursor displayed when task is hardware cursor owner
must be set if keyboard in field mode and field table includes input
fields
0 keyboard is in field mode rather than keystroke mode

Bitfields for DESQview pointer object bits:
Bit(s) Description (Table 0340)
15 reserved, can't be set
14-8 unused
7 mouse pointer is hidden while in window
6 get messages even if window not topmost
5 get messages even if window not foreground
4 multiple clicks separated by less than 1/3 second are counted and
returned in a single message
3 pointer position is relative to screen origin, not window origin
2 send message on button release as well as button press
1 (DV 2.23+) send message with row=FFFFh and col=FFFFh whenever the
pointer leaves the window
0 send message only on button activity, not movement
DV-specific, and INT 15/AX=DE0Fh must have been called first
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - WRITE ATTRIBUTES TO WINDOW
AH = 12h
BH = 0Bh
BL = window to write attributes to
00h handle is DWORD on top of stack
01h current task's default window
0Ch (DV 2.26+) default window of task owning handle on top of stack
0Dh (DV 2.26+) default window of parent of current task
STACK: DWORD number of attributes to write
DWORD address of attributes
Note: the attributes are written starting at the current cursor position; the
cursor is left just after the last position written
SeeAlso: AH=12h/BH=0Ah"WINDOW"
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - SEND MAILBOX MESSAGE/STAT BY REF
AH = 12h
BH = 0Bh
BL = mailbox to write to
00h handle is DWORD on top of stack
02h default mailbox of task whose handle is on top of stack
03h current task's default mailbox
STACK: DWORD status (low byte)
DWORD length of message
DWORD address of message
Notes: only a pointer to the message is stored, but the write may still fail
due to insufficient memory
under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h)
SeeAlso: AH=12h/BH=0Ah"MAILBOX"
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - REMOVE OBJECT FROM OBJECTQ
AH = 12h
BH = 0Bh
BL = OBJECTQ from which to remove all copies of a particular object
06h OBJECTQ of task whose handle is on top of stack
07h task's default OBJECTQ
STACK: DWORD handle of object to remove
Note: should be sent whenever an object is erased or closed
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - RESET OBJECT BITS
AH = 12h
BH = 0Bh
BL = object
00h handle is DWORD on top of stack
pointer: reset control flags
keyboard: reset control flags
04h clear control flags on KEYBOARD object (handle on top of stack)
05h clear control flags on task's default KEYBOARD object
STACK: DWORD which bits to clear (see #0339,#0340)
SeeAlso: AH=12h/BH=0Ah"OBJECT"
--------Q-1512--BH0C-------------------------
INT 15 - TopView - SEND MESSAGE - "OPEN" - OPEN OBJECT
AH = 12h
BH = 0Ch
BL = object
00h handle is DWORD on top of stack
window: fill with given character from scroll origin to end
keyboard: attach to a window
timer: open
pointer: start taking input for window
panel: associate with a panel file
01h fill task's default window with given char from scrl org to end
02h open given task's mailbox for input (task's handle on stack)
03h open current task's mailbox
04h attach a KEYBOARD to a window (handle on top of stack)
05h attach task's default KEYBOARD to a window
06h open a task's OBJECTQ (task's handle on top of stack)
07h open current task's OBJECTQ
0Ch (DV 2.26+) fill def window of task owning handle on top of stck
0Dh (DV 2.26+) fill default window of parent of current task
STACK: (if window) DWORD character to fill with
(if keyboard) DWORD handle of window to attach to
(if pointer) DWORD handle of window to attach to
(if panel) DWORD length of filename or resident panel
DWORD address of filename or resident panel
(otherwise) nothing
Notes: if first byte of panel file name is 1Bh, then the "name" IS a panel
if first two bytes of panel file "name" are C0hC3h, then the "name" IS
the panel file
result code of open may be retrieved with STATUS message
logical cursor is left at scroll origin after filling window
the task opening a mailbox becomes its owner, and the only task allowed
to read the mailbox
messages are only sent to a pointer object when the mouse is positioned
in the window to which the pointer has been attached
there is no need to explicitly open a timer object, as ADDTO and WRITE
messages automatically open the timer
SeeAlso: AH=12h/BH=0Dh,AH=12h/BH=14h"LOCK"
--------Q-1512--BH0D-------------------------
INT 15 - TopView - SEND MESSAGE - "CLOSE" - CLOSE OBJECT
AH = 12h
BH = 0Dh
BL = object
00h handle is DWORD on top of stack
timer: close
keyboard: detach from window and discard queued input
pointer: stop taking input
panel: close
mailbox: close, unlock, and discard any pending messages
02h close given task's mailbox (task's handle on top of stack)
03h close task's default mailbox
04h close KEYBOARD object (handle on top of stack)
05h close task's default KEYBOARD
06h close given task's OBJECTQ (task's handle on top of stack)
07h close current task's OBJECTQ
Notes: when an OBJECTQ is closed, each object in the OBJECTQ is sent an
ERASE message (AH=12h/BH=0Eh)
when a panel object is closed, the panel file and any panels currently
in use are freed; window and keyboard objects created by APPLY are
not affected, but field mode input ceases
open but idle timer objects consume a small amount of CPU time
SeeAlso: AH=12h/BH=0Ch,AH=12h/BH=0Eh,AH=12h/BH=14h"LOCK"
--------Q-1512--BH0E-------------------------
INT 15 - TopView - SEND MESSAGE - "ERASE" - ERASE OBJECT

AH = 12h
BH = 0Eh
BL = object
00h handle is DWORD on top of stack
window: clear from scroll origin to end of window
keyboard: discard input
timer: cancel current interval
pointer: discard all pending messages
mailbox: discard all pending messages
01h clear task's default window from scroll origin to end
02h discard all queued messages in mailbox (handle on top of stack)
03h discard all queued messages in current task's default mailbox
04h discard all input queued to KEYBOARD (handle on top of stack)
05h discard all input queued to task's default KEYBOARD
06h remove all objects from OBJECTQ (task's handle on top of stack)
07h remove all objects from current task's OBJECTQ
0Ch (DV 2.26+) clear window of task owning handle on top of stack
0Dh (DV 2.26+) clear default window of parent of current task
Note: when an OBJECTQ is erased, each object in the OBJECTQ is also erased
SeeAlso: AH=12h/BH=02h
--------Q-1512--BH0F-------------------------
INT 15 - TopView - SEND MESSAGE - "STATUS" - GET OBJECT STATUS
AH = 12h
BH = 0Fh
BL = object
00h handle is DWORD on top of stack
timer: is it running?
pointer: return status of last message
panel: verify success of last OPEN or APPLY
02h return status of last msg READ from mailbox (handle on stack)
03h return status of last msg READ from task's default mailbox
04h get stat of last msg from task's KEYBOARD (task handle on stk)
05h get status of last msg from task's default KEYBOARD
06h return whether OBJECTQ is open or not (handle on top of stack)
07h return whether task's default OBJECTQ is open or not
Return: DWORD on top of stack is status
Notes: if object is a panel object, the status indicates the error code:
00h successful
14h panel name not in panel directory
15h not enough memory to apply panel
16h invalid panel format
17h panel file already open
81h-92h DOS error codes+80h \ codes > 80h indicate
95h not enough memory to open panel file > that the panel was
98h null panel file name / not opened
if object is a timer, the status is:
00000000h open but not running
40000000h open and running
80000000h closed
if object is an OBJECTQ, the status is:
00000000h open
80000000h closed
if object is a keyboard in keystroke mode, the status is the extended
character code (scan code) of the last keystroke
if object is a keyboard in field mode, the status indicates the reason
for the last return from the field manager
00h Enter key pressed
01h Button 1 or keystroke selection
02h Button 2
03h validation
04h auto Enter on field
1Bh Escape pressed
46h ^Break pressed
other: extended code for key terminating input
the status of mailbox messages sent by the window manager is always 80h
the status of a pointer message is the same as the status field in the
message
SeeAlso: AH=12h/BH=04h"READ"
--------Q-1512--BH10-------------------------
INT 15 - TopView - SEND MESSAGE - "EOF" - GET OBJECT EOF STATUS
AH = 12h
BH = 10h
BL = object
00h handle is DWORD on top of stack
window: return TRUE if logical cursor past end of window
mailbox: ???
01h returns TRUE if logical cursor past end of task's def window
02h return ??? for task's mailbox (task's handle on top of stack)
03h return ??? for current task's mailbox
0Ch (DV 2.26+) check log crsr of window owning handle on top of stk
0Dh (DV 2.26+) check log cursor of window of parent task
Return: DWORD on top of stack is status
--------Q-1512--BH11-------------------------
INT 15 - TopView - SEND MESSAGE - "AT" - POSITION OBJECT CURSOR
AH = 12h
BH = 11h
BL = window for which to move cursor
00h window's handle is DWORD on top of stack
01h task's default window
0Ch (DV 2.26+) default window of task owning handle on top of stack
0Dh (DV 2.26+) default window of parent of current task
STACK: DWORD column
DWORD row
--------Q-1512--BH11-------------------------
INT 15 - TopView - SEND MESSAGE - "SETNAME" - ASSIGN NAME TO MAILBOX
AH = 12h
BH = 11h
BL = mailbox to name
00h DWORD on top of stack is mailbox handle
02h use given task's mailbox (task's handle on top of stack)
03h use current task's default mailbox
STACK: DWORD length of name
DWORD address of name
SeeAlso: AH=12h/BH=12h"GETNAME",AX=DE0Eh
--------Q-1512--BX1100-----------------------
INT 15 - TopView - SEND MESSAGE - "SETSCALE" - SET POINTER SCALE FACTOR
AH = 12h
BX = 1100h
STACK: DWORD object handle for pointer object
DWORD number of colums to scale pointer position to
DWORD number of rows to scale pointer position to
SeeAlso: AH=12h/BX=1200h
--------Q-1512--BH12-------------------------
INT 15 - TopView - SEND MESSAGE - "READN" - GET NEXT N OBJECT BYTES
AH = 12h
BH = 12h
BL = window to read from
00h handle is DWORD on top of stack
01h read next N chars or attributes on task's default window
0Ch (DV 2.26+) read window of task owning handle on top of stack
0Dh (DV 2.26+) read default window of parent of current task
STACK: DWORD count
Return: STACK: DWORD number of bytes actually read
DWORD address of buffer containing data
Notes: reading starts at the current logical cursor position; the cursor is
updated to point at the character following the last one read
any translucent blanks (FFh) which are visible on screen are changed
to the character which is seen through them
the string produced by the read is placed in an input buffer which may
be reused by the next READ or READN of a window
window stream opcodes D8h and D9h determine whether the read returns
characters or attributes
SeeAlso: AH=12h/BH=04h"WINDOW",AH=12h/BH=05h"WINDOW"
--------Q-1512--BH12-------------------------
INT 15 - DESQview 2.50+ - SEND MESSAGE - "GETNAME" - GET NAME OF MAILBOX
AH = 12h
BH = 12h
BL = mailbox for which to retrieve name
00h DWORD on top of stack is mailbox handle
02h use given task's mailbox (task's handle on top of stack)
03h use current task's default mailbox
STACK: DWORD length of buffer for name
DWORD pointer to buffer
Return: STACK: DWORD length of returned name (or size of buffer, if less)
Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x
Note: the returned name is not NUL-terminated
SeeAlso: AH=12h/BH=11h"SETNAME",AX=DE0Eh
--------Q-1512--BX1200-----------------------
INT 15 - TopView - SEND MESSAGE - "GETSCALE" - GET POINTER SCALE FACTOR
AH = 12h
BX = 1200h
STACK: DWORD object handle for pointer
Return: STACK: DWORD pointer pos scaled as if window were this many colums wide
DWORD pointer pos scaled as if window were this many rows high
SeeAlso: AH=12h/BX=1100h
--------Q-1512--BH13-------------------------
INT 15 - TopView - SEND MESSAGE - "REDRAW" - REDRAW WINDOW
AH = 12h
BH = 13h
BL = window object
00h DWORD on top of stack is handle for window to redraw
01h redraw task's default window
0Ch (DV 2.26+) redraw window of task owning handle on top of stack
0Dh (DV 2.26+) redraw default window of parent of current task
SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=0Eh
--------Q-1512--BH13-------------------------
INT 15 - DESQview 2.50+ - SEND MESSAGE - "READINTO" - GET NEXT MAIL MESSAGE
AH = 12h
BH = 13h
BL = mailbox from which to read
00h DWORD on top of stack is mailbox handle
02h use given task's mailbox (task's handle on top of stack)
03h use current task's default mailbox
STACK: DWORD size of buffer in bytes
DWORD pointer to buffer
Return: STACK: DWORD number of bytes read
Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x
Notes: this call blocks if no input is available, but will return less than
the requested number of bytes if some (but insufficient) data is
available
use this call instead of AH=12h/BH=04h if the mailbox has flag bits
4 or 5 set, as common memory may be exhausted by that call when
attempting to read the next message
SeeAlso: AH=12h/BH=04h"READ",AH=12h/BH=05h,AH=12h/BH=16h
--------Q-1512--BX1300-----------------------
INT 15 - TopView - SEND MESSAGE - "SETICON" - SPECIFY POINTER ICON
AH = 12h
BX = 1300h
STACK: DWORD object handle for pointer
DWORD character to use for pointer
Return: STACK popped
--------Q-1512--BH14-------------------------
INT 15 - TopView - SEND MESSAGE - "SETESC" - SET ESCAPE ROUTINE ADDRESS
AH = 12h
BH = 14h
BL = message modifier
00h handle is DWORD on top of stack
01h define user stream
04h intercept keystrokes from KEYBOARD to window (handle on stack)
05h intercept keystrokes from task's default KEYBOARD to a window
STACK: (if window) DWORD user stream number (14h-1Fh)
DWORD address of FAR user stream handler
(if keyboard) DWORD address of FAR filter function (see #0341)
Return: STACK popped

(Table 0341)
Values keyboard filter function is called with when keyboard is in field mode:
AL = character
AH = 00h or extended ASCII code if AL = 00h
BL = field number
CH = cursor column
CL = cursor row
DL = field type modifier (sixth item in field table entry)
DH = seventh item in field table entry
ES:SI = window's handle
DS:DI -> field table entry for field containing the cursor
Return: AH = action to take
00h use keystroke
01h ignore keystroke
FFh beep and ignore keystroke
Note: the filter function is not allowed to make INT 15, DOS, or BIOS calls
--------Q-1512--BH14-------------------------
INT 15 - TopView - SEND MESSAGE - "LOCK" - REQUEST EXCLUSIVE ACCESS TO RESOURCE
AH = 12h
BH = 14h
BL = object
00h mailbox handle is DWORD on top of stack
02h use given task's mailbox (task's handle on top of stack)
03h use current task's default mailbox
Return: STACK popped if BL=00h
Note: release exclusive access by sending CLOSE message to mailbox
access may be requested multiple times, and requires multiple CLOSEs
SeeAlso: AH=12h/BH=0Dh
--------Q-1512--BH15-------------------------
INT 15 - DESQview v2.20+ - SEND MESSAGE - "SETFLAGS" - SET OBJECT FLAGS
AH = 12h
BH = 15h
BL = object
00h DWORD on top of stack
mailbox, keyboard, or pointer only
02h mailbox for task whose handle is on top of stack
03h mailbox for current task
04h keyboard for task whose handle is on top of stack
05h keyboard for current task
STACK: DWORD flags (see #0342,#0343)
Return: STACK popped
Notes: only available if the API level has been set to at least 2.20
equivalent to performing SUBFROM and ADDTO calls on the object
if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than
"READ" (see AH=12h/BX=1300h"READINTO") to retrieve messages
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=16h

Bitfields for DESQview mailbox object flags:
Bit(s) Description (Table 0342)
0 all mail messages in common memory
1 allow write even if closed
2 don't erase messages when mailbox closed
4 (DV/X) append messages with like status and sender (stream-oriented
mail)
5 (DV/X) store mail in expanded memory (pool grows as needed)
6 (DV/X) make mailbox into non-owned mailbox

Bitfields for DESQview keyboard object flags:
Bit(s) Description (Table 0343)
5 exclusive input when keyboard in use for input
--------Q-1512--BH16-------------------------
INT 15 - DESQview v2.20+ - SEND MESSAGE - "GETFLAGS" - GET OBJECT FLAGS
AH = 12h
BH = 16h
BL = object
00h DWORD on top of stack
mailbox, keyboard, or pointer only
02h mailbox for task whose handle is on top of stack
03h mailbox for current task
04h keyboard for task whose handle is on top of stack
05h keyboard for current task
Return: STACK: DWORD current control flags (see #0342,#0343)
Notes: only available if the API level has been set to at least 2.20
if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than
"READ" (see AH=12h/BH=13h"READINTO") to retrieve messages
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=13h"READINTO",AH=12h/BH=15h
--------Q-1512--BH17-------------------------
INT 15 - DESQview v2.42-2.52 - BUG
AH = 12h
BH = 17h
BL = object
00h DWORD on top of stack
mailbox, keyboard, or pointer only
02h mailbox for task whose handle is on top of stack
03h mailbox for current task
04h keyboard for task whose handle is on top of stack
05h keyboard for current task
Notes: due to a fencepost error, message 17h is accepted for mailboxes,
keyboards, and pointers, but causes a random branch
DESQview v2.50-2.52 are distributed as part of DESQview/X v1.02
--------Q-1512--BH80-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 00h WITH ERROR RECOVERY
AH = 12h
BH = 80h
Note: this function is identical to AH=12h/BH=00h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=00h

(Table 0344)
Values for DESQview error code:
00h no error
01h invalid values
02h alias invalid
03h handle valid but wrong type
04h invalid handle
--------Q-1512--BH81-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 01h WITH ERROR RECOVERY
AH = 12h
BH = 81h
Note: this function is identical to AH=12h/BH=01h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=01h
--------Q-1512--BH82-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 02h WITH ERROR RECOVERY
AH = 12h
BH = 82h
Note: this function is identical to AH=12h/BH=02h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=02h
--------Q-1512--BH83-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 03h WITH ERROR RECOVERY
AH = 12h
BH = 83h
Note: this function is identical to AH=12h/BH=03h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=03h,AH=12h/BX=0300h
--------Q-1512--BH84-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 04h WITH ERROR RECOVERY
AH = 12h
BH = 84h
Note: this function is identical to AH=12h/BH=04h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=04h,AH=12h/BX=0400h
--------Q-1512--BH85-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 05h WITH ERROR RECOVERY
AH = 12h
BH = 85h
Note: this function is identical to AH=12h/BH=05h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=05h
--------Q-1512--BH86-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 06h WITH ERROR RECOVERY
AH = 12h
BH = 86h
Note: this function is identical to AH=12h/BH=06h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=06h
--------Q-1512--BH87-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 07h WITH ERROR RECOVERY
AH = 12h
BH = 87h
Note: this function is identical to AH=12h/BH=07h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=07h
--------Q-1512--BH88-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 08h WITH ERROR RECOVERY
AH = 12h
BH = 88h
Note: this function is identical to AH=12h/BH=08h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=08h
--------Q-1512--BH89-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 09h WITH ERROR RECOVERY
AH = 12h
BH = 89h
Note: this function is identical to AH=12h/BH=09h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=09h
--------Q-1512--BH8A-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ah WITH ERROR RECOVERY
AH = 12h
BH = 8Ah
Note: this function is identical to AH=12h/BH=0Ah, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Ah
--------Q-1512--BH8B-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Bh WITH ERROR RECOVERY
AH = 12h
BH = 8Bh
Note: this function is identical to AH=12h/BH=0Bh, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Bh
--------Q-1512--BH8C-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ch WITH ERROR RECOVERY
AH = 12h
BH = 8Ch
Note: this function is identical to AH=12h/BH=0Ch, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Ch
--------Q-1512--BH8D-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Dh WITH ERROR RECOVERY
AH = 12h
BH = 8Dh
Note: this function is identical to AH=12h/BH=0Dh, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Dh
--------Q-1512--BH8E-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Eh WITH ERROR RECOVERY
AH = 12h
BH = 8Eh
Note: this function is identical to AH=12h/BH=0Eh, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Eh
--------Q-1512--BH8F-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Fh WITH ERROR RECOVERY
AH = 12h
BH = 8Fh
Note: this function is identical to AH=12h/BH=0Fh, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=0Fh
--------Q-1512--BH90-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 10h WITH ERROR RECOVERY
AH = 12h
BH = 90h
Note: this function is identical to AH=12h/BH=10h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=10h
--------Q-1512--BH91-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 11h WITH ERROR RECOVERY
AH = 12h
BH = 91h
Note: this function is identical to AH=12h/BH=11h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=11h,AH=12h/BX=1100h
--------Q-1512--BH92-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 12h WITH ERROR RECOVERY
AH = 12h
BH = 92h
Note: this function is identical to AH=12h/BH=12h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=12h,AH=12h/BX=1200h
--------Q-1512--BH93-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 13h WITH ERROR RECOVERY
AH = 12h
BH = 93h
Note: this function is identical to AH=12h/BH=13h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=13h
--------Q-1512--BH94-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 14h WITH ERROR RECOVERY
AH = 12h
BH = 94h
Note: this function is identical to AH=12h/BH=14h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=14h
--------Q-1512--BH95-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 15h WITH ERROR RECOVERY
AH = 12h
BH = 95h
Note: this function is identical to AH=12h/BH=15h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=15h
--------Q-1512--BH96-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 16h WITH ERROR RECOVERY
AH = 12h
BH = 96h
Note: this function is identical to AH=12h/BH=16h, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0344)
SeeAlso: AH=12h/BH=16h
--------T-1513-------------------------------
INT 15 - VMiX - "sys_wake" - WAKE SLEEPING PROCESS
AH = 13h
STACK: WORD process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=12h"VMiX"
--------T-1513-------------------------------
INT 15 - MultiDOS Plus - GET TASK CONTROL BLOCK
AH = 13h
Return: BX:AX -> task control block (see #0345)
SeeAlso: AH=15h"MultiDOS"

Format of MultiDOS Plus v4.0 task control block:
Offset Size Description (Table 0345)
00h DWORD pointer to next TCB
04h 8 BYTEs ASCIZ task name
0Ch 2 BYTEs ???
0Eh WORD task PSP segment
10h WORD abort/suspend flags
12h WORD current screen segment (see AH=0Bh,AH=0Ch)
14h WORD priority level (0000h-FFFEh)
16h WORD time slice counter
18h 2 BYTEs ???
1Ah WORD suspend timer value
1Ch WORD stack segment
1Eh WORD stack pointer
20h WORD display type
22h WORD display memory
24h 2 BYTEs ???
26h WORD termination count
28h WORD equipment flag for BIO10 driver
2Ah BYTE background CRT mode
2Bh WORD screen width in columns
2Dh WORD screen size in bytes
2Fh WORD segment of physical screen memory
31h 16 BYTEs eight cursor positions
41h WORD current cursor shape
43h BYTE active display page
44h WORD CRT controller I/O port base
46h 2 BYTEs ???
48h WORD foreground task flag
4Ah 6 BYTEs ???
50h WORD saved video segment (see AH=0Bh,AH=0Ch)
52h DWORD old INT 22
56h DWORD old INT 23
5Ah DWORD old INT 24
5Eh WORD top of memory for task
60h 4 BYTEs ???
64h WORD DTA segment (see INT 21/AH=1Ah)
66h WORD DTA offset
68h 4 BYTEs ???
6Ch BYTE current ANSI.SYS attribute
6Dh BYTE current ANSI.SYS column
6Eh BYTE current ANSI.SYS row
6Fh BYTE current ANSI.SYS display state
70h BYTE maximum ANSI.SYS columns
71h BYTE current ANSI.SYS page
72h WORD saved ANSI.SYS cursor position
74h BYTE ANSI.SYS parameter buffer index
75h BYTE current ANSI.SYS screen mode
76h BYTE ANSI.SYS wrap flag
77h 6 BYTEs ANSI.SYS parameter buffer
7Dh BYTE ANSI.SYS keyboard DSR state
7Eh 7 BYTEs ANSI.SYS keyboard DSR buffer
85h 3 BYTEs ???
88h 16 BYTEs request header for DOS driver calls
98h 14 BYTEs ???
A6h WORD segment of EMS map if EMS task
A8h WORD flag: task makes EMS calls
AAh WORD EMS handle for task
ACh WORD keyboard shift state
AEh 12 BYTEs ???
BAh WORD TCB of parent if child task
BCh WORD termination code
BEh WORD COM port number
C0h 4 BYTEs ???
C4h WORD current IRQ number
C6h 2 BYTEs ???
C8h WORD miscellaneous flag word
CAh 2 BYTEs ???
CCh DWORD old INT 10
D0h WORD EMS alternate map set number
D2h 414 BYTEs DOS current disk and directory context (optional)
--------T-1514-------------------------------
INT 15 - VMiX - "sys_clrwindow" - CLEAR WINDOW
AH = 14h
STACK: WORD top left corner of window (high byte = row, low = col)
WORD bottom right corner of window (high = row, low = col)
Return: AX = status (SYS_OK)
Note: clears window to color set with "sys_setcolors" (AH=18h)
SeeAlso: AH=15h"VMiX",AH=16h"VMiX",AH=18h"VMiX",AH=1Fh"VMiX"
--------T-1514-------------------------------
INT 15 - MultiDOS Plus - CHECK IF MultiDOS FOREGROUND OR BACKGROUND
AH = 14h
Return: AX = current state
0000h MultiDOS Plus command prompt is background task
0001h command prompt is foreground task
SeeAlso: AH=0Bh"MultiDOS"
--------T-1515-------------------------------
INT 15 - VMiX - "sys_setbwindow" - SET BANNER WINDOW MESSAGE
AH = 15h
STACK: DWORD pointer to ASCIZ banner message for top of screen
Return: AX = status (SYS_OK)
SeeAlso: AH=14h"VMiX",AH=16h"VMiX"
--------T-1515-------------------------------
INT 15 - MultiDOS Plus - GET SYSTEM BLOCK
AH = 15h
Return: BX:AX -> system block (see #0346)
SeeAlso: AH=13h"MultiDOS"

Format of MultiDOS Plus 4.0 system block:
Offset Size Description (Table 0346)
00h WORD segment of system control block
02h WORD redirection flag set by /NOREDIRECT
04h WORD no-INT 10 flag set by /NO10
06h DWORD old INT 10
0Ah DWORD new INT 10
0Eh DWORD pointer to WORD with current TCB offset (see #0345)
12h DWORD pointer to WORD with idle task TCB offset
16h DWORD pointer to WORD with foreground TCB offset (see #0345)
1Ah DWORD pointer to WORD with MultiDOS TCB offset (see #0345)
1Eh WORD Task Control Block size
20h WORD number of TCBs
22h WORD flag: EMS present
24h WORD EMS page frame base segment
26h WORD 16K pages in EMS page frame
28h WORD base segment for conventional memory tasks
2Ah WORD conventional memory size in paragraphs
2Ch DWORD pointer to list of queue pointers
--------T-1516-------------------------------
INT 15 - VMiX - "sys_setwindow" - SET ROOT WINDOW SIZE AND HOME CURSOR
AH = 16h
STACK: DWORD pointer to I/O Request Packet
WORD top left corner of window (high byte = row, low = col)
WORD bottom right corner of window (high = row, low = col)
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=14h"VMiX",AH=17h"VMiX"
--------T-1516-------------------------------
INT 15 - MultiDOS Plus - INITIALIZATION
AH = 16h
Note: used internally during initialization; any other calls will cause
unpredictable results
--------T-1517-------------------------------
INT 15 - VMiX - "sys_getcolors" - GET CONSOLE WINDOW COLORS
AH = 17h
Return: AH = foreground color
AL = background color
SeeAlso: AH=16h"VMiX",AH=18h"VMiX"
--------T-1517-------------------------------
INT 15 - MultiDOS Plus - MAP IRQ
AH = 17h
AL = IRQ to map (01h-0Fh)
BX = offset of task control block (see #0345) to associate with IRQ
Return: AX = status
0000h successful
other invalid IRQ
Note: the EMS map of the specified TCB is associated with the given interrupt
SeeAlso: AH=18h"MultiDOS",AH=19h"MultiDOS"
--------T-1518-------------------------------
INT 15 - VMiX - "sys_setcolors" - SET CONSOLE COLORS
AH = 18h
STACK: WORD new background/foreground colors
bits 3-0: foreground
bits 7-4: background
bits 15-8: unused
Return: AX = color
SeeAlso: AH=14h"VMiX",AH=17h"VMiX",AH=19h"VMiX"
--------T-1518-------------------------------
INT 15 - MultiDOS Plus - UNMAP IRQ
AH = 18h
AL = IRQ to unmap (01h-0Fh)
Return: AX = status
0000h successful
0001h invalid IRQ
Note: results are unpredictable if the IRQ has not been mapped
SeeAlso: AH=17h"MultiDOS",AH=19h"MultiDOS"
--------T-1519-------------------------------
INT 15 - VMiX v2+ - "sys_setconwn" - SET WINDOW COLORS
AH = 19h
STACK: WORD new background/foreground colors
bits 3-0: foreground
bits 7-4: background
bits 15-8: unused
Return: AX = color
SeeAlso: AH=18h"VMiX"
--------T-1519-------------------------------
INT 15 - MultiDOS Plus - UNMAP ALL IRQs
AH = 19h
Return: AX destroyed
Note: for MultiDOS internal use only
SeeAlso: AH=17h"MultiDOS",AH=18h"MultiDOS"
--------T-151A-------------------------------
INT 15 - VMiX v2+ - "sys_sint" - INVOKE SOFTWARE INTERRUPT
AH = 1Ah
STACK: WORD interrupt number
DWORD pointer to register structure
Return: AX = returned flags
--------T-151A-------------------------------
INT 15 - MultiDOS Plus - MAP SEMAPHORE NAME TO NUMBER
AH = 1Ah
DS:SI -> 8-byte name
Return: AL = status
00h successful
AH = semaphore number (20h-3Fh)
04h out of string space
Notes: all eight bytes of the name are significant
if the name does not already exist, it is added to the name table and
associated with a free semaphore number
names cannot be destroyed
SeeAlso: AH=1Bh"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS"
--------T-151B-------------------------------
INT 15 - VMiX v2+ - "sys_blkmov" - MOVE MEMORY BLOCK
AH = 1Bh
STACK: DWORD source address
DWORD destination address
WORD number of words to move
Return: nothing
--------T-151B-------------------------------
INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE BY NAME
AH = 1Bh
DS:SI -> 8-byte name
Return: AH = status
00h successful
02h invalid semaphore number
03h caller already owns semaphore
04h out of string space
Notes: (see AH=01h"MultiDOS")
equivalent to AH=1Ah followed by AH=01h
SeeAlso: AH=01h"MultiDOS",AH=1Ah"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS"
--------T-151C-------------------------------
INT 15 - VMiX v2+ - "sys_bitblt" - PUT GRAPHICAL OBJECT AT CURSOR POSITION
AH = 1Ch
STACK: WORD AND/OR pixel with background (00h = OR, 01h = AND)
DWORD pointer to object bitmap
WORD object width in pixels
WORD object height in pixels
Return: nothing
SeeAlso: AH=1Dh"VMiX"
--------T-151C-------------------------------
INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE BY NAME
AH = 1Ch
DS:SI -> 8-byte name
Return: AH = status
00h successful
01h not semaphore owner
02h invalid semaphore number
04h out of string space
Notes: (see AH=02h"MultiDOS")
equivalent to AH=1Ah followed by AH=02h
SeeAlso: AH=02h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Dh"MultiDOS"
--------T-151D-------------------------------
INT 15 - VMiX v2+ - "sys_getfont" - GET CURRENT CONSOLE GRAPHICS FONT
AH = 1Dh
Return: AX = current font number (00h-03h)
SeeAlso: AH=1Ch"VMiX",AH=1Eh"VMiX"
--------T-151D-------------------------------
INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE BY NAME
AH = 1Dh
DS:SI -> 8-byte name
Return: AH = status
00h semaphore not in use
01h semaphore owned by another task
02h invalid semaphore number
03h caller owns semaphore
04h out of string space
Notes: (see AH=10h"MultiDOS")
equivalent to AH=1Ah followed by AH=10h
SeeAlso: AH=10h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Ch"MultiDOS"
--------T-151E-------------------------------
INT 15 - VMiX v2+ - "sys_setfont" - SET CONSOLE GRAPHICS FONT
AH = 1Eh
STACK: WORD new font number (00h-03h)
Return: AX = current font number (00h-03h)
SeeAlso: AH=1Dh"VMiX"
--------T-151E00-----------------------------
INT 15 - MultiDOS Plus - CLEAR EVENT COUNTER
AX = 1E00h
DX = event/trigger number (00h-3Fh)
Return: AH = status
00h successful
SeeAlso: AX=1E01h,AX=1E02h
--------T-151E01-----------------------------
INT 15 - MultiDOS Plus - TRIGGER EVENT
AX = 1E01h
DX = event/trigger number (00h-3Fh)
Return: AH = status
00h successful
01h invalid event/trigger number
Notes: schedules any task waiting for event; if no task is waiting, the event
counter is incremented (and will roll over if it was 65535)
may be invoked by interrupt handler
SeeAlso: AX=1E00h,AX=1E02h
--------T-151E02-----------------------------
INT 15 - MultiDOS Plus - WAIT FOR EVENT
AX = 1E02h
DX = event/trigger number (00h-3Fh)
Return: AH = status
00h successful
01h invalid event/trigger number
Note: if the event counter is zero, the task is suspended until the event is
triggered with AX=1E01h; else, the counter is decremented and the
call returns immediately
SeeAlso: AX=1E00h,AX=1E01h
--------T-151E08-----------------------------
INT 15 - MultiDOS Plus 4.01 - SET CONTEXT-SWITCH FUNCTIONS
AX = 1E08h
DX:BX -> context save handler (see #0347)
DX:CX -> context restore handler (see #0347)
Note: handlers may be removed by setting addresses to 0000h:0000h

(Table 0347)
Values MultiDOS Plus context-switch handlers are called with:
ES:BX -> task's TCB
Return: all registers preserved
--------T-151F-------------------------------
INT 15 - VMiX v2.???+ - "sys_scrollwin" - SCROLL WINDOW
AH = 1Fh
STACK: WORD top left corner of window (high byte = row, low = col)
WORD bottom right corner of window
Return: AX = status (SYS_OK)
SeeAlso: AH=14h"VMiX",AH=18h"VMiX"
--------T-151F-------------------------------
INT 15 - MultiDOS Plus v4.01 - GET MEMORY PARAMETERS
AH = 1Fh
Return: BX = first segment of conventional memory
DX = first segment of EMS swap frame into which MultiDOS will load
programs
--------T-1520-------------------------------
INT 15 - MultiDOS Plus v4.01 - CHECK IF MULTITASKING ENABLED
AH = 20h
Return: AX = current state
0000h multitasking enabled
other TCB of task that disabled multitasking
SeeAlso: AH=0Dh"MultiDOS",AH=13h"MultiDOS"
--------c-152000-----------------------------
INT 15 U - DOS 3+ PRINT.COM - DISABLE CRITICAL REGION FLAG
AX = 2000h
Desc: stop setting user flag on entry to PRINT critical region
Note: also supported by PC Network v1.00 RECEIVER.COM
SeeAlso: AX=2001h
--------c-152001-----------------------------
INT 15 U - DOS 3+ PRINT.COM - SET CRITICAL REGION FLAG
AX = 2001h
ES:BX -> byte which is to be incremented while in a DOS call
Desc: specify a user flag which PRINT should set to let an interested
application know it is in a critical region
Note: also supported by PC Network v1.00 RECEIVER.COM
SeeAlso: AX=2000h
--------O-152010-----------------------------
INT 15 - OS HOOK - SETUP SYSREQ ROUTINE (AT,XT286,PS50+)
AX = 2010h
???
Return: ???
SeeAlso: AX=2011h
--------O-152011-----------------------------
INT 15 - OS HOOK - COMPLETION OF SYSREQ FUNCTION (AT,XT286,PS50+)
AX = 2011h
???
Return: ???
SeeAlso: AX=2010h
--------B-1521-------------------------------
INT 15 - SYSTEM - POWER-ON SELF-TEST ERROR LOG (PS50+)
AH = 21h
AL = subfunction
00h read POST log
01h write POST log
BH = device ID
BL = error code
Return: CF set on error
AH = status (00h OK, 01h list full, 80h invalid cmd, 86h unsupported)
if function 00h:
BX = number of error codes stored
ES:DI -> error log
Notes: the log is a series of words, the first byte of which identifies the
error code and the second the device.
supported by AMI PCI BIOS
--------B-1522-------------------------------
INT 15 - SYSTEM - later PS/2s - LOCATE ROM BASIC
AH = 22h
Return: CF set on error
AH = status (86h if function not supported)
CF clear on success
AH = 00h
ES:BX -> ROM BASIC
Note: if this function is not supported, ROM BASIC is at F600h:0000h
SeeAlso: INT 86"BASIC",INT F0"BASIC"
--------B-152300-----------------------------
INT 15 U - SYSTEM - PS/1s - GET ??? CMOS DATA
AX = 2300h
Return: CF clear if successful
CL = value of CMOS location 2Dh
CH = value of CMOS location 2Eh
CF set on error
AH = error code (80h,86h)
SeeAlso: AX=2301h,AX=2304h,AX=2305h
--------B-152301-----------------------------
INT 15 U - SYSTEM - PS/1s - SET ??? CMOS DATA
AX = 2301h
CL = new value for CMOS location 2Dh
CH = new value for CMOS location 2Eh
Return: CF clear if successful
CF set on error
AH = error code (80h,86h)
Note: sets the contents of CMOS locations 2Dh and 2Eh
SeeAlso: AX=2300h,AX=2304h,AX=2305h
--------B-152304-----------------------------
INT 15 U - SYSTEM - PS/1s - SYSTEM SETUP
AX = 2304h
DX = segment of 32K buffer
Return: CF clear if successful
AX = 0003h (left over from setting video mode 3)
BX,CX,DX,BP,DS,ES destroyed
CF set on error
AH = error code (80h,86h)
SeeAlso: AX=2301h,AX=2305h
----------152305-----------------------------
INT 15 U - SYSTEM - PS/1s - GET PROCESSOR SPEED
AX = 2305h
Return: CF clear if successful
AL = processor speed in MHz
CF set on error
AL = FFh (speed > 80 MHz)
AL = error code (80h,86h = unsupported function)
SeeAlso: AX=2301h,AX=2304h,AH=BCh
--------b-152400-----------------------------
INT 15 - SYSTEM - later PS/2s - DISABLE A20 GATE
AX = 2400h
Return: CF clear if successful
AH = 00h
CF set on error
AH = status
01h keyboard controller is in secure mode
86h function not supported
Note: also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2401h,AX=2402h,AX=2403h
--------b-152401-----------------------------
INT 15 - SYSTEM - later PS/2s - ENABLE A20 GATE
AX = 2401h
Return: CF clear if successful
AH = 00h
CF set on error
AH = status
01h keyboard controller is in secure mode
86h function not supported
Note: also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2400h,AX=2402h
--------b-152402-----------------------------
INT 15 - SYSTEM - later PS/2s - GET A20 GATE STATUS
AX = 2402h
Return: CF clear if successful
AH = 00h
AL = current state (00h disabled, 01h enabled)
CF set on error
AH = status
01h keyboard controller is in secure mode
86h function not supported
Note: also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2400h,AX=2401h
--------b-152403-----------------------------
INT 15 - SYSTEM - later PS/2s - QUERY A20 GATE SUPPORT
AX = 2403h
Return: CF clear if successful
AH = 00h
BX = status of A20 gate support (see #0348)
CF set on error
AH = status
01h keyboard controller is in secure mode
86h function not supported
Note: also supported by AMI PCI BIOS and Qualitas 386MAX v6.01+
BUG: at one point early in processing INT 15/AH=24h, the AMI PCI BIOS
version 1.00.05.AX1 compares whether AL==03h instead of AL>=03h,
thus causing a random branch on any value of AL greater than 3.
SeeAlso: AX=2402h

Bitfields for A20 gate support status:
Bit(s) Description (Table 0348)
0 supported on keyboard controller
1 supported with bit 1 of I/O port 92h
15 additional data is available (location not yet defined)
----------153000-----------------------------
INT 15 - Object Kernel for DOS - INSTALLATION CHECK
AX = 3000h
Return: AX:BX = 4F42h:4A21h ('OBJ!') if installed
CX = resident segment
Program: the Object Kernel is a program by M.W. Pieters which is currently
under development
SeeAlso: AX=3001h,AX=3008h
----------153001-----------------------------
INT 15 - Object Kernel for DOS - GET STATUS BLOCK
AX = 3001h
Return: AX = FFFFh
ES:DI -> status block
SeeAlso: AX=3000h,AX=3008h
----------153002-----------------------------
INT 15 - Object Kernel for DOS - KILL PROCESS
AX = 3002h
(not yet implemented)
SeeAlso: AX=3000h
----------153003-----------------------------
INT 15 - Object Kernel for DOS - STOP PROCESS
AX = 3003h
(not yet implemented)
SeeAlso: AX=3000h
----------153004-----------------------------
INT 15 - Object Kernel for DOS - START PROCESS
AX = 3004h
(not yet implemented)
SeeAlso: AX=3000h
----------153005-----------------------------
INT 15 - Object Kernel for DOS - RESTART PROCESS
AX = 3005h
(not yet implemented)
SeeAlso: AX=3000h
----------153006-----------------------------
INT 15 - Object Kernel for DOS - EXECUTE PROCESS
AX = 3006h
(not yet implemented)
SeeAlso: AX=3000h
----------153007-----------------------------
INT 15 - Object Kernel for DOS - LIST PROCESSES
AX = 3007h
(not yet implemented)
SeeAlso: AX=3000h
----------153008-----------------------------
INT 15 - Object Kernel for DOS - SWITCH ObjectKernel ON/OFF
AX = 3008h
BH = new state (00h disabled, 01h enabled)
Return: AX = FFFFh
SeeAlso: AX=3000h,AX=3009h
----------153009-----------------------------
INT 15 - Object Kernel for DOS - RESERVED FOR FUTURE USE
AX = 3009h to 30FFh
SeeAlso: AX=3000h
Program: the Object Kernel is a program by M.W. Pieters which is currently
under development
--------B-1540-------------------------------
INT 15 - SYSTEM - READ/MODIFY PROFILES (CONVERTIBLE)
AH = 40h
AL = subfunction
00h get system profile in CX and BX
01h set system profile from CX and BX
02h get internal modem profile in BX
03h set internal modem profile from BX
Return: CF clear if successful
AH = 00h
CF set on error
AH = status (80h = profile execution failed)
--------V-154000-----------------------------
INT 15 - Compaq SLT/286 or Portable 386 - READ LCD/PLASMA TIMEOUT
AX = 4000h
Return: AX = 4000h
CL = timeout in minutes, 00h if disabled
SeeAlso: AX=4001h,AX=4600h
--------V-154001-----------------------------
INT 15 - Compaq SLT/286 or Portable 386 - SET LCD/PLASMA TIMEOUT
AX = 4001h
CL = timeout in minutes, 00h to disable
Return: AL = status
00h timeout modified
01h timeout cannot be modified
40h timeout cannot be modified
CL = timeout in minutes, 00h if disabled
SeeAlso: AX=4000h,AX=4601h
--------B-1541-------------------------------
INT 15 - SYSTEM - WAIT ON EXTERNAL EVENT (CONVERTIBLE and some others)
AH = 41h
AL = condition type (see #0349)
BH = condition compare or mask value
BL = timeout value times 55 milliseconds
00h means no timeout
DX = I/O port address if AL bit 4 set
ES:DI -> user byte if AL bit 4 clear
Note: call AH=C0h and examine bit 3 of feature byte 1 to determine whether
this function is supported
SeeAlso: AH=83h,AH=86h,AH=C0h

Bitfields for external event wait condition type:
Bit(s) Description (Table 0349)
0-2 condition to wait for
0 any external event
1 compare and return if equal
2 compare and return if not equal
3 test and return if not zero
4 test and return if zero
3 reserved
4 1=port address, 0=user byte
5-7 reserved
--------B-1542-------------------------------
INT 15 - SYSTEM - REQUEST POWER OFF (CONVERTIBLE,HP 95LX)
AH = 42h
AL = suspend type
00h to use system profile
01h to force suspend regardless of system profile
Note: the HP 95LX apparently suspends regardless of the value in AL; on
power-up, execution will resume following the instruction calling
this function
SeeAlso: AH=44h
--------b-154280-----------------------------
INT 15 - Compaq SLT/286 - ENTER STANDBY
AX = 4280h
Return: AH = 42h
CF clear if successful
CF set if unable to enter standby
SeeAlso: AX=4600h,AX=5307h/BX=0001h/CX=0001h
--------B-1543-------------------------------
INT 15 - SYSTEM - READ SYSTEM STATUS (CONVERTIBLE)
AH = 43h
Return: AL = status bits (see #0350)

Bitfields for Convertible system status:
Bit(s) Description (Table 0350)
7 power low
6 external power in use
5 standby power lost
4 power activated by alarm
3 internal modem powered on
2 RS232/parallel adapter powered on
1 reserved
0 LCD detached
--------B-1544-------------------------------
INT 15 - SYSTEM - (DE)ACTIVATE INTERNAL MODEM POWER (CONVERTIBLE)
AH = 44h
AL = new modem power state (00h power off, 01h power on)
SeeAlso: AH=42h
--------b-1544C0-----------------------------
INT 15 - Olivetti Quaderno - INITIALIZE DIGITAL SIGNAL PROCESSING???
AX = 44C0h
ES:DI -> new DSP procedure (exchanged with CMOS[28h])
ES:SI -> ??? buffer
Return: ES:DI -> old DSP procedure
ES:SI buffer filled with ten bytes from CMOS (addresses 14h-1Ch)
followed by 00h (addresses 15h-1Ch copied only if less than 21h)
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C1-----------------------------
INT 15 - Olivetti Quaderno - ???
AX = 44C1h
???
Return: ???
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C2-----------------------------
INT 15 - Olivetti Quaderno - ???
AX = 44C2h
DL = byte to be written to I/O port 350h
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C3h,AX=44C9h
--------b-1544C3-----------------------------
INT 15 - Olivetti Quaderno - GET ???
AX = 44C3h
Return: DH = bitfields (see #0351)
DL = value read from I/O port 350h
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C2h,AX=44C9h

Bitfields for Olivetti Quaderno ???:
Bit(s) Description (Table 0351)
5-7 5-7 read from I/O port 351h
2-4 zero
1-0 "tres complique"
--------b-1544C4-----------------------------
INT 15 - Olivetti Quaderno - ???
AX = 44C4h and 44C5h
???
Return: ???
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C6-----------------------------
INT 15 - Olivetti Quaderno - READ LCD
AX = 44C6h
Return: DX = FFFFh clock is displayed on LCD display
DX = other: hex number displayed in first four positions of display
BH = left alphanumeric character on display (see #0352)
BL = right alphanumeric character on display (see #0352)
CL = colon flags (see #0353)
Notes: the LCD display has the format HH:HH:AA, where H is a hex digit and A
is an alphanumeric character
this function is also supported by XBIOS.COM
SeeAlso: AX=44C7h,AX=44C9h

(Table 0352)
Values for Olivetti Quaderno LCD alphanumeric characters:
00h-0Fh hex digit
2Bh "+"
2Dh "-"
30h-39h "0" to "9"
41h-5Ah "A" to "Z"
61h-6Ah "a" to "z"
else blank

Bitfields for Olivetti Quaderno LCD colon flags:
Bit(s) Description (Table 0353)
0 left colon on
1 right colon on
2-7 unused
--------b-1544C7-----------------------------
INT 15 - Olivetti Quaderno - WRITE LCD
AX = 44C7h
DX = hex display
FFFFh display clock and "HI", "Md", or "Lo"
BH,BL,CL unused
other: display specified hex number in first four positions
BH = left alphanumeric character on display (see #0352)
BL = right alphanumeric character on display (see #0352)
CL = colon flags (see #0353)
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C6h
--------b-1544C8-----------------------------
INT 15 - Olivetti Quaderno - ???
AX = 44C8h
CL = ??? (00h,02h,21h)
CH = ???
???
Return: ???
Note: this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h

--------b-1544C9-----------------------------
INT 15 - Olivetti Quaderno - GET XBIOS VERSION
AX = 44C9h
Return: AL = major version
AH = minor version
Note: this function is also supported by XBIOS.COM
--------b-1546-------------------------------
INT 15 U - HP 100LX/200LX - SET POWER OFF TIMEOUT
AH = 46h
BX = timeout value in ticks
0000h inhibit auto power off
Note: the 200LX default timeout is 0CCDh = 3277 ticks = approx. 3 min.
--------b-154600-----------------------------
INT 15 - Compaq SLT/286 - READ POWER CONSERVATION/MODEM CONFIGURATION
AX = 4600h
Return: AH = modem configuration information (see #0354)
AL = power conservation status information (see #0355)
BH = default system inactivity timeout (1-21 minutes)
BL = current system inactivity timeout (1-21 minutes)
CH = default video display inactivity timeout (1-63 minutes)
CL = current video display inactivity timeout (1-63 minutes)
DH = default fixed disk drive inactivity timeout (1-21 minutes)
DL = current fixed disk drive inactivity timeout (1-21 minutes)
SeeAlso: AX=4280h,AX=4601h,INT 77

Bitfields for Compaq SLT/286 modem configuration information:
Bit(s) Description (Table 0354)
0 powerup state (0 off, 1 on)
1 modem installed
2 IRQ line assignment (0 IRQ 4, 1 IRQ 3)
3 COM port assignment (0 = COM 2, 1 = COM 1)
4 modem state (0 not assigned, 1 assigned)
5 modem is on

Bitfields for Compaq SLT/286 power conservation status:
Bit(s) Description (Table 0355)
0 power source (0 internal, 1 external)
1-2 low battery state
00 no low battery condition
01 low battery 1
10 reserved
11 low battery 2
3-4 power conservation mode
00 automatic, 01 on, 10 off, 11 reserved
--------b-154601-----------------------------
INT 15 - Compaq SLT/286 - MODIFY POWER CONSERVATION/MODEM CONFIGURATION
AX = 4601h
BL = system inactivity timeout (1-21 minutes)
FFh do not change
CL = video display inactivity timeout (1-63 minutes)
FFh do not change
DL = current fixed disk drive inactivity timeout (1-21 minutes)
FFh do not change
DH = new modem state (00h turn off, 01h turn on, FFh don't change)
Return: CF clear if successful
AH = 00h
BL = current system inactivity timeout (1-21 minutes)
CL = current video display inactivity timeout (1-63 minutes)
DL = current fixed disk drive inactivity timeout (1-21 minutes)
DH = modem state (FFh unchanged, 00h turned off, 01h turned on)
CF set on error
AH = error code
01h input is out of range
02h no modem present
SeeAlso: AX=4600h,INT 77
--------b-154604-----------------------------
INT 15 - Compaq Contura 486 and "Alladin" 08/05/93 ROMs - GET ???
AX = 4604h
Return: CF clear if successful
AL = byte read from I/O port 03F8h
CF set on error (not supported)
AH = 86h (unsupported function)
Note: also supported by 7/26/93 LTE Lite 386 ROM
--------b-154605-----------------------------
INT 15 - Compaq Contura 486 and "Alladin" 08/05/93 ROMs - ???
AX = 4605h
Return: CF clear if successful
CF set on error (not supported)
AH = 86h (unsupported function)
Note: this function is a NOP (other than clearing CF) in the 08/05/93 version
of the Contura 486/486c/486cx and "Aladdin" ROM, and the 7/26/93
LTE Lite 386 ROM
--------S-1549-------------------------------
INT 15 U - HP 100LX/200LX - SERIAL INTERFACE SELECT
AH = 49h
AL = serial interface
00h wired (COM1)
01h infrared
Note: interface should only be changed in deactivated state (see AH=4Ah)
SeeAlso: AH=4Ah"HP"
--------J-154900-----------------------------
INT 15 - Far East MS-DOS - GET BIOS TYPE
AX = 4900h
Return: CF clear if successful
AH = 00h
BL = BIOS mode
00h DOS/V
01h standard DBCS DOS (hardware DBCS support)
CF set on error
AH = 86h (function not supported)
Note: in practice, DOS/J returns AH=86h; AX DOS does not support this call
SeeAlso: AH=50h,INT 21/AH=30h
--------S-154A-------------------------------
INT 15 U - HP 100LX/200LX - SERIAL INTERFACE CONTROL
AH = 4Ah
AL = control
00h deactivate
01h activate
Note: interface selected with AH=49h will be (de)activated
SeeAlso: AH=49h"HP"
--------b-154DD4-----------------------------
INT 15 - HP 95LX/100LX/200LX - INSTALLATION CHECK
AX = 4DD4h
Return: BX = 4850h ("HP") if HP 95LX/100LX/200LX
CX = model
0101h HP 95LX
0102h HP 100LX/200LX
DH = ???
02h HP 200LX 2MB BIOS 1.01 A D german
DL = ???
00h HP 95LX
01h HP 200LX 2MB BIOS 1.01 A D german
SeeAlso: INT 0B"HP 95LX",INT 0F"HP 95LX",INT 5F/AH=00h,INT 60/DI=0100h
SeeAlso: INT 61"HP 95LX"
--------b-154E-------------------------------
INT 15 - HP 95LX - ENABLE/DISABLE LIGHT SLEEP
AH = 4Eh
AL = light sleep
00h disabled
01h enabled
Note: when light sleep is disabled, the system will continue running at full
speed; when enabled, it may automatically slow to conserve batteries
SeeAlso: INT 06"HP 95LX",INT 60/DI=0100h
--------B-154F-------------------------------
INT 15 C - KEYBOARD - KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS)
AH = 4Fh
AL = hardware scan code
CF set
Return: CF set
AL = hardware scan code
CF clear
scan code should be ignored
Note: called by INT 09 handler to translate scan codes; the INT 09 code does
not examine the scan code it reads from the keyboard until after
this function returns. This permits software to rearrange the
keyboard; for example, swapping the CapsLock and Control keys, or
turning the right Shift key into Enter.
SeeAlso: INT 09,INT 15/AH=C0h
--------J-1550-------------------------------
INT 15 - DOS/V - FONT SUBSYSTEM ACCESS
AH = 50h
AL = which function address to retrieve
00h "read font" function
01h "write font" function
BL = 00h
BH = character size (00h single-byte, 01h double-byte)
DH = width of character cell
DL = height of character cell
BP = code page (see #0356)
Return: CF clear if successful
AH = 00h
ES:BX -> requested function's address
CF set on error
AH = error code (see #0357)
SeeAlso: AH=49h

(Table 0356)
Values for DOS/V code page:
0 default
437 US English
932 Japanese
934 Korea
936 China
938 Taiwan

(Table 0357)
Values for DOS/V error code:
01h invalid font type in BH
02h BL not zero
03h invalid font size
04h invalid code page
80h unsupported function (PC)
86h unsupported function (XT)
--------T-1550-------------------------------
INT 15 - VMIX v2.???+ - "sys_vm_page" - SET NEW VIRTUAL PAGE TABLE
AH = 50h
BX = segment of page directory table
CX = page number of page table
SeeAlso: AH=10h"VMiX",AH=51h"VMiX",AH=52h"VMiX"
--------T-1551-------------------------------
INT 15 - VMiX v2.???+ - "sys_vm_func" - EXECUTE FUNCTION IN PROTECTED MODE
AH = 51h
STACK: DWORD selector:offset of function
Return: registers as returned by function
Note: executes function with privilege level 0 (highest privilege)
SeeAlso: AH=10h"VMiX",AH=52h"VMiX"
--------B-155101-----------------------------
INT 15 - SYSTEM - later PS/2s - EXPANSION UNIT, RETURN CONFIGURATION NUMBER
AX = 5101h
Return: CF set if successful
AH = 00h
AL = current configuration number
00h system unit only
FFh configuration not recognized
BX = status flag
bits 0-14: reserved
bit 15: additional data is available (location TBD)
CF clear on error
AH = status
01h expansion unit is not present
86h function not supported
Note: CF convention is the reverse of the standard convention for this
interrupt. (Perhaps a typo in the IBM BIOS Tech Ref?)
--------T-1552-------------------------------
INT 15 - VMiX v2.???+ - "sys_vm_init" - INITIALIZE PROTECTED-MODE ENVIRONMENT
AH = 52h
SeeAlso: AH=50h"VMiX",AH=51h"VMiX"
----------1552-------------------------------
INT 15 C - IBM/MS INT 13 Extensions - MEDIA EJECT INTERCEPT
AH = 52h
DL = drive number
Return: CF clear if OK to eject media
AH = 00h
CF set if ejection disallowed
AH = error code (B1h,B3h) (see #0140)
Note: called by the IBM/MS INT 13 Extensions driver/BIOS when an ejection
request is made
SeeAlso: INT 13/AH=46h"INT 13 Extensions"
--------p-155300-----------------------------
INT 15 - Advanced Power Management Specification - INSTALLATION CHECK
AX = 5300h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
AH = major version (BCD)
AL = minor version (BCD)
BX = 504Dh ("PM")
CX = flags (see #0358)
CF set on error
AH = error code (06h,86h) (see #0359)

Bitfields for APM flags:
Bit(s) Description (Table 0358)
0 16-bit protected mode interface supported
1 32-bit protected mode interface supported
2 CPU idle call reduces processor speed
3 BIOS power management disabled
4 BIOS power management disengaged (APM v1.1)
5-7 reserved

(Table 0359)
Values for APM error code:
01h power management functionality disabled
02h interface connection already in effect
03h interface not connected
04h real-mode interface not connected
05h 16-bit protected-mode interface already connected
06h 16-bit protected-mode interface not supported
07h 32-bit protected-mode interface already connected
08h 32-bit protected-mode interface not supported
09h unrecognized device ID
0Ah invalid parameter value in CX
0Bh-1Fh reserved for other interface and general errors
20h-3Fh reserved for CPU errors
40h-5Fh reserved for device errors
60h can't enter requested state
61h-7Fh reserved for other system errors
80h no power management events pending
81h-85h reserved for other power management event errors
86h APM not present
87h-9Fh reserved for other power management event errors
--------p-155301-----------------------------
INT 15 - Advanced Power Management Specification - CONNECT REAL-MODE INTERFACE
AX = 5301h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
CF set on error
AH = error code (02h,05h,07h,09h) (see #0359)
SeeAlso: AX=5302h,AX=5303h,AX=5304h
--------p-155302-----------------------------
INT 15 R - Advanced Power Management Spec - CONNECT 16-BIT PROTMODE INTERFACE
AX = 5302h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
AX = real-mode segment base address of protected-mode 16-bit code
segment
BX = offset of entry point
CX = real-mode segment base address of protected-mode 16-bit data
segment
---APM v1.1---
SI = APM BIOS code segment length
DI = APM BIOS data segment length
CF set on error
AH = error code (02h,05h,06h,07h,09h) (see #0359)
Notes: the caller must initialize two consecutive descriptors with the
returned segment base addresses; these descriptors must be valid
whenever the protected-mode interface is called, and will have
their limits arbitrarily set to 64K.
the protected mode interface is invoked by making a far call with the
same register values as for INT 15; it must be invoked while CPL=0,
the code segment descriptor must have a DPL of 0, the stack must be
in a 16-bit segment and have enough room for BIOS use and possible
interrupts, and the current I/O permission bit map must allow access
to the I/O ports used for power management.
functions 00h-03h are not available from protected mode
SeeAlso: AX=5301h,AX=5303h,AX=5304h
--------p-155303-----------------------------
INT 15 - Advanced Power Management Spec - CONNECT 32-BIT PROTMODE INTERFACE
AX = 5303h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
AX = real-mode segment base address of protected-mode 32-bit code
segment
EBX = offset of entry point
CX = real-mode segment base address of protected-mode 16-bit code
segment
DX = real-mode segment base address of protected-mode 16-bit data
segment
---APM v1.1---
SI = APM BIOS code segment length
DI = APM BIOS data segment length
CF set on error
AH = error code (02h,05h,07h,08h,09h) (see #0359)
Notes: the caller must initialize three consecutive descriptors with the
returned segment base addresses for 32-bit code, 16-bit code, and
16-bit data, respectively; these descriptors must be valid whenever
the protected-mode interface is called, and will have their limits
arbitrarily set to 64K.
the protected mode interface is invoked by making a far call to the
32-bit code segment with the same register values as for INT 15; it
must be invoked while CPL=0, the code segment descriptor must have a
DPL of 0, the stack must be in a 32-bit segment and have enough room
for BIOS use and possible interrupts, and the current I/O permission
bit map must allow access to the I/O ports used for power management.
functions 00h-03h are not available from protected mode
SeeAlso: AX=5301h,AX=5302h,AX=5304h
--------p-155304-----------------------------
INT 15 - Advanced Power Management Specification - DISCONNECT INTERFACE
AX = 5304h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
CF set on error
AH = error code (03h,09h) (see #0359)
SeeAlso: AX=5301h,AX=5302h,AX=5303h
--------p-155305-----------------------------
INT 15 - Advanced Power Management Specification - CPU IDLE
AX = 5305h
Return: CF clear if successful (after system leaves idle state)
CF set on error
AH = error code (03h,0Bh) (see #0359)
Notes: call when the system is idle and should be suspended until the next
system event or interrupt
should not be called from within a hardware interrupt handler to avoid
reentrance problems
if an interrupt causes the system to resume normal processing, the
interrupt may or may not have been handled when the BIOS returns
from this call; thus, the caller should allow interrupts on return
interrupt handlers may not retain control if the BIOS allows
interrupts while in idle mode even if they are able to determine
that they were called from idle mode
the caller should issue this call continuously in a loop until it needs
to perform some processing of its own
SeeAlso: AX=1000h,AX=5306h,INT 2F/AX=1680h
--------p-155306-----------------------------
INT 15 - Advanced Power Management Specification - CPU BUSY
AX = 5306h
Return: CF clear if successful
CF set on error
AH = error code (03h,0Bh) (see #0359)
Notes: called to ensure that the system runs at full speed even on systems
where the BIOS is unable to recognize increased activity (especially
if interrupts are hooked by other programs and not chained to the
BIOS)
this call may be made even when the system is already running at full
speed, but it will create unnecessary overhead
should not be called from within a hardware interrupt handler to avoid
reentrance problems
SeeAlso: AX=5305h
--------p-155307-----------------------------
INT 15 - Advanced Power Management Specification - SET POWER STATE
AX = 5307h
BX = device ID (see #0360)
CX = system state ID (see #0361)
Return: CF clear if successful
CF set on error
AH = error code (01h,03h,09h,0Ah,0Bh,60h) (see #0359)
Note: should not be called from within a hardware interrupt handler to avoid
reentrance problems
SeeAlso: AX=530Ch

(Table 0360)
Values for APM device IDs:
0000h system BIOS
0001h all devices for which the system BIOS manages power
01xxh display (01FFh for all attached display devices)
02xxh secondary storage (02FFh for all attached secondary storage devices)
03xxh parallel ports (03FFh for all attached parallel ports)
04xxh serial ports (04FFh for all attached serial ports)
---APM v1.1---
05xxh network adapters (05FFh for all attached network adapters)
06xxh PCMCIA sockets (06FFh for all)
0700h-DFFFh reserved
Exxxh OEM-defined power device IDs
F000h-FFFFh reserved

(Table 0361)
Values for system state ID:
0000h ready (not supported for device ID 0001h)
0001h stand-by
0002h suspend
0003h off (not supported for device ID 0001h)
---APM v1.1---
0004h last request processing notification (only for device ID 0001h)
0005h last request rejected (only for device ID 0001h)
0006h-001Fh reserved system states
0020h-003Fh OEM-defined system states
0040h-007Fh OEM-defined device states
0080h-FFFFh reserved device states
--------p-155307CX0001-----------------------
INT 15 - Advanced Power Management Specification - SYSTEM STAND-BY
AX = 5307h
CX = 0001h
BX = 0001h (device ID for all power-managed devices)
Return: CF clear
Notes: puts the entire system into stand-by mode; normally called in response
to a System Stand-by Request notification after any necessary
processing, but may also be invoked at the caller's discretion
should not be called from within a hardware interrupt handler to avoid
reentrance problems
the stand-by state is typically exited on an interrupt
SeeAlso: AX=4280h,AX=5307h/CX=0002h/BX=0001h,AX=530Bh
--------p-155307CX0002-----------------------
INT 15 - Advanced Power Management Specification - SUSPEND SYSTEM
AX = 5307h
CX = 0002h
BX = 0001h (device ID for all power-managed devices)
Return: after system is resumed
CF clear
Notes: puts the entire system into a low-power suspended state; normally
called in response to a Suspend System Request notification after
any necessary processing, but may also be invoked at the caller's
discretion
should not be called from within a hardware interrupt handler to avoid
reentrance problems
the caller may need to update its date and time values because the
system could have been suspended for a long period of time
SeeAlso: AX=5307h/CX=0001h/BX=0001h,AX=530Bh
--------p-155308-----------------------------
INT 15 - Advanced Power Management Spec - ENABLE/DISABLE POWER MANAGEMENT
AX = 5308h
BX = device ID for all devices power-managed by APM
0001h (APM v1.1)
FFFFh (APM v1.0)
CX = new state
0000h disabled
0001h enabled
Return: CF clear if successful
CF set on error
AH = error code (01h,03h,09h,0Ah,0Bh) (see #0359)
Notes: when power management is disabled, the system BIOS will not
automatically power down devices, enter stand-by or suspended mode,
or perform any power-saving actions in response to AX=5305h calls
should not be called from within a hardware interrupt handler to avoid
reentrance problems
SeeAlso: AX=5309h,AX=530Dh,AX=530Fh
--------p-155309-----------------------------
INT 15 - Advanced Power Management Specification - RESTORE POWER-ON DEFAULTS
AX = 5309h
BX = device ID for all devices power-managed by APM
0001h (APM v1.1)
FFFFh (APM v1.0)
Return: CF clear if successful
CF set on error
AH = error code (09h) (see #0359)
Note: should not be called from within a hardware interrupt handler to avoid
reentrance problems
SeeAlso: AX=5308h
--------p-15530ABX0001-----------------------
INT 15 - Advanced Power Management Specification - GET POWER STATUS
AX = 530Ah
BX = 0001h (device ID for all devices power-managed by APM)
Return: CF clear if successful
BH = AC line status
00h off-line
01h on-line
02h on backup power (APM v1.1)
FFh unknown
other reserved
BL = battery status (see #0362)
CH = battery flag (APM v1.1) (see #0363)
CL = remaining battery life, percentage
00h-64h (0-100) percentage of full charge
FFh unknown
DX = remaining battery life, time (APM v1.1) (see #0364)
CF set on error
AH = error code (09h) (see #0359)
Note: should not be called from within a hardware interrupt handler to avoid
reentrance problems

(Table 0362)
Values for APM v1.0+ battery status:
00h high
01h low
02h critical
03h charging
FFh unknown
other reserved

Bitfields for APM v1.1 battery flag:
Bit(s) Description (Table 0363)
0 high
1 low
2 critical
3 charging
4-6 reserved
7 no system battery
Note: all bits set (FFh) if unknown

Bitfields for APM v1.1 remaining battery life:
Bit(s) Description (Table 0364)
15 time units: 0=seconds, 1=minutes
14-0 battery life in minutes or seconds
Note: all bits set (FFFFh) if unknown
--------p-15530B-----------------------------
INT 15 - Advanced Power Management Specification - GET POWER MANAGEMENT EVENT
AX = 530Bh
Return: CF clear if successful
BX = event code (see #0365)
CF set on error
AH = error code (03h,0Bh,80h) (see #0359)
Notes: although power management events are often asynchronous, notification
will not be made until polled via this call to permit software to
only receive event notification when it is prepared to process
power management events; since these events are not very time-
critical, it should be sufficient to poll once or twice per second
the critical resume notification is made after the system resumes
from an emergency suspension; normally, the system BIOS only notifies
its partner that it wishes to suspend and relies on the partner to
actually request the suspension, but no notification is made on an
emergency suspension
should not be called from within a hardware interrupt handler to avoid
reentrance problems
SeeAlso: AX=5307h,AX=5307h/BX=0001h/CX=0001h,AX=5307h/BX=0001h/CX=0002h

(Table 0365)
Values for APM event code:
0001h system stand-by request
0002h system suspend request
0003h normal resume system notification
0004h critical resume system notification
0005h battery low notification
---APM v1.1---
0006h power status change notification
0007h update time notification
0008h critical system suspend notification
0009h user system standby request notification
000Ah user system suspend request notification
000Bh system standby resume notification
000Ch-00FFh reserved system events
01xxh reserved device events
02xxh OEM-defined APM events
0300h-FFFFh reserved
--------p-15530C-----------------------------
INT 15 - Advanced Power Management v1.1 - GET POWER STATE
AX = 530Ch
BX = device ID (see #0360)
Return: CF clear if successful
BX = system state ID (see #0361)
CF set on error
AH = error code (01h,09h) (see #0359)
SeeAlso: AX=5307h
--------p-15530D-----------------------------
INT 15 - Advanced Power Management v1.1 - EN/DISABLE DEVICE POWER MANAGEMENT
AX = 530Dh
BX = device ID (see #0360)
CX = function
0000h disable power management
0001h enable power management
Return: CF clear if successful
CF set on error
AH = error code (01h,03h,09h,0Ah,0Bh) (see #0359)
SeeAlso: AX=5308h,AX=530Fh
--------p-15530E-----------------------------
INT 15 - Advanced Power Management v1.1 - DRIVER VERSION
AX = 530Eh
BX = device ID of system BIOS (0000h)
CH = APM driver major version (BCD)
CL = APM driver minor version (BCD)
Return: CF clear if successful
AH = APM connection major version (BCD)
AL = APM connection minor version (BCD)
CF set on error
AH = error code (03h,09h,0Bh) (see #0359)
SeeAlso: AX=5300h
--------p-15530F-----------------------------
INT 15 - Advanced Power Management v1.1 - ENGAGE/DISENGAGE POWER MANAGEMENT
AX = 530Fh
BX = device ID (see #0360)
CX = function
0000h disengage power management
0001h engage power management
Return: CF clear if successful
CF set on error
AH = error code (01h,09h) (see #0359)
Note: unlike AX=5308h, this call does not affect the functioning of the APM
BIOS
SeeAlso: AX=5308h,AX=530Dh
--------p-155380BH00-------------------------
INT 15 - APM SL Enhanced v1.0 - GET SUSPEND/GLOBAL STANDBY MODE
AX = 5380h
BH = 00h
Return: CF clear if successful
AL = 82360SL Auto Power Off Timer High Count (APWR_TMRH)
BL = sustdbymode (see #0366)
SeeAlso: AX=5380h/BH=01h,AX=5380h/BH=02h,AX=5380h/BH=7Fh

Bitfields for APM SL sustdbymode:
Bit(s) Description (Table 0366)
2 ???
1 Auto Power Off Timer Enable (APWR_TMR_EN)
0 ???
--------p-155380BH01-------------------------
INT 15 - APM SL Enhanced v1.0 - SET SUSPEND/GLOBAL STANDBY MODE
AX = 5380h
BH = 01h
BL = sustdbymode (see #0366)
Return: CF clear if successful
SeeAlso: AX=5380h/BH=00h,AX=5380h/BH=7Fh
--------p-155380BH02-------------------------
INT 15 - APM SL Enhanced v1.0 - GET GLOBAL STANDBY TIMER
AX = 5380h
BH = 02h
Return: CF clear if successful
SI:DI = timer count in seconds (actually 1.024 seconds)
Desc: reads the value of 82360SL GSTDBY_TMRH & GSTDBY_TMRL registers
SeeAlso: AX=5380h/BH=00h,AX=5380h/BH=03h,AX=5380h/BH=04h,AX=5380h/BH=7Fh
--------p-155380BH03-------------------------
INT 15 - APM SL Enhanced v1.0 - SET GLOBAL STANDBY TIMER
AX = 5380h
BH = 03h
SI:DI = timer count in seconds (actually 1.024 seconds)
Return: CF clear if successful
Desc: sets the value of 82360SL GSTDBY_TMRH & GSTDBY_TMRL registers
Note: the maximum timer count is 268431 seconds
SeeAlso: AX=5380h/BH=02h,AX=5380h/BH=7Fh
--------p-155380BH04-------------------------
INT 15 - APM SL Enhanced v1.0 - GET AUTO POWER OFF TIMER
AX = 5380h
BH = 04h
Return: CF clear if successful
SI:DI = timer count in seconds (actually 1.024 seconds)
Desc: reads the value of 82360SL APWR_TMRH & APWR_TMRL registers
SeeAlso: AX=5380h/BH=02h,AX=5380h/BH=05h,AX=5380h/BH=06h,AX=5380h/BH=7Fh
--------p-155380BH05-------------------------
INT 15 - APM SL Enhanced v1.0 - SET AUTO POWER OFF TIMER
AX = 5380h
BH = 05h
SI:DI = timer count in seconds (actually 1.024 seconds)
Return: CF clear if successful
Desc: sets the value of 82360SL APWR_TMRH & APWR_TMRL registers
Note: the maximum timer count is 134213 seconds
SeeAlso: AX=5380h/BH=04h,AX=5380h/BH=7Fh
--------p-155380BH06-------------------------
INT 15 - APM SL Enhanced v1.0 - GET RESUME CONDITION
AX = 5380h
BH = 06h
Return: CF clear if successful
BL = resume condition (see #0367)
Desc: reads the value of 82360SL RESUME_MASK register
SeeAlso: AX=5380h/BH=04h,AX=5380h/BH=07h,AX=5380h/BH=08h,AX=5380h/BH=7Fh

Bitfields for APM SL resume condition:
Bit(s) Description (Table 0367)
7-2 reserved (0)
1 alarm enabled (resume on CMOS alarm)
0 ring enabled
--------p-155380BH07-------------------------
INT 15 - APM SL Enhanced v1.0 - SET RESUME CONDITION
AX = 5380h
BH = 07h
BL = resume condition (see #0367)
Return: CF clear if successful
Desc: sets the value of 82360SL RESUME_MASK register
SeeAlso: AX=5380h/BH=06h,AX=5380h/BH=7Fh
--------p-155380BH08-------------------------
INT 15 - APM SL Enhanced v1.0 - GET CALENDAR EVENT TIME
AX = 5380h
BH = 08h
Return: CF clear if successful
CH = hours
CL = minutes
SI = seconds
CF set on error
AH = error code (see #0368)
Desc: gets calendar event time from CMOS ram
SeeAlso: AX=5380h/BH=06h,AX=5380h/BH=09h,AX=5380h/BH=0Ah,AX=5380h/BH=7Fh

(Table 0368)
Values for APM SL error code:
02h no alarm set
03h no battery
--------p-155380BH09-------------------------
INT 15 - APM SL Enhanced v1.0 - SET CALENDAR EVENT TIME
AX = 5380h
BH = 09h
CH = hours
CL = minutes
SI = seconds
Return: CF clear if successful
CF set on error
AH = error code (see #0368)
Desc: sets calendar event time in CMOS ram, enables Alarm resume
SeeAlso: AX=5380h/BH=08h,AX=5380h/BH=7Fh
--------p-155380BH0A-------------------------
INT 15 - APM SL Enhanced v1.0 - GET CALENDAR EVENT DATE
AX = 5380h
BH = 0Ah
Return: CF clear if successful
SI = century
DI = year
CH = month
CL = day
CF set on error
AH = error code (see #0368)
Desc: reads calendar event date from Extended CMOS ram
SeeAlso: AX=5380h/BH=08h,AX=5380h/BH=0Bh,AX=5380h/BH=0Ch,AX=5380h/BH=7Fh
--------p-155380BH0B-------------------------
INT 15 - APM SL Enhanced v1.0 - SET CALENDAR EVENT DATE
AX = 5380h
BH = 0Bh
SI = century
DI = year
CH = month
CL = day
Return: CF clear if successful
CF set on error
AH = error code (see #0368)
Desc: sets calendar event date in Extended CMOS ram
SeeAlso: AX=5380h/BH=0Ah,AX=5380h/BH=7Fh
--------p-155380BH0C-------------------------
INT 15 - APM SL Enhanced v1.0 - GET CPU SPEED MODE
AX = 5380h
BH = 0Ch
Return: CF clear if successful
CL = CPU clock divider (1,2,4 or 8)
BL = autocpumode ???
Desc: reads bits 4-5 of CPUPWRMODE register
SeeAlso: AX=5380h/BH=0Ah,AX=5380h/BH=0Dh,AX=5380h/BH=7Fh
--------p-155380BH0D-------------------------
INT 15 - APM SL Enhanced v1.0 - SET CPU SPEED MODE
AX = 5380h
BH = 0Dh
CL = CPU clock divider (1,2,4 or 8)
BL = autocpumode ???
Return: CF clear if successful
Desc: writes bits 4-5 of CPUPWRMODE register
SeeAlso: AX=5380h/BH=0Ch,AX=5380h/BH=7Eh,AX=5380h/BH=7Fh
--------p-155380BH7E-------------------------
INT 15 - APM SL Enhanced v1.0 - SL HW PARAMETER
AX = 5380h
BH = 7Eh
Return: AL = ???
03h on A-Step 386SL BIOSes
12h on later steps
BX = Control port (00B0h)
SeeAlso: AX=5380h/BH=00h,AX=5380h/BH=7Fh
--------p-155380BH7F-------------------------
INT 15 - Advanced Power Management v1.1 - OEM APM INSTALLATION CHECK
AX = 5380h
BH = 7Fh
Return: CF clear if successful
BX = OEM identifier
all other registers OEM-defined
---Intel SL Enhanced Option BIOS---
BX = 534Ch ('SL')
CL = 4Fh ('O')
AL = version (10h = 1.0)
---HP APM BIOS---
BX = 4850h ('HP')
CX = version (0001h)
CF set on error
AH = error code (03h) (see #0359)
SeeAlso: AX=5380h/BH=00h
--------p-155380-----------------------------
INT 15 - Advanced Power Management v1.1 - OEM APM FUNCTIONS
AX = 5380h
BH <> 7Fh
all other registers OEM-defined
Return: OEM-defined
SeeAlso: AX=5380h/BH=7Fh
--------T-155400-----------------------------
INT 15 C - Omniview Multitasker - INSTALLATION NOTIFICATION
AX = 5400h
ES:BX -> device information tables
DI:DX -> dispatcher entry point
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5407h,INT 2F/AX=DE00h
--------T-155401-----------------------------
INT 15 C - Omniview Multitasker - PROCESS CREATION
AX = 5401h
ES:BX = process handle
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5402h,INT 2F/AX=DE04h
--------T-155402-----------------------------
INT 15 C - Omniview Multitasker - PROCESS DESTRUCTION
AX = 5402h
ES:DX = process handle
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5401h,INT 2F/AX=DE05h
--------T-155403-----------------------------
INT 15 C - Omniview Multitasker - SAVE
AX = 5403h
ES:DX = process swapping out
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5404h,INT 2F/AX=DE08h
--------T-155404-----------------------------
INT 15 C - Omniview Multitasker - RESTORE
AX = 5404h
ES:DX = process swapping in
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5403h,INT 2F/AX=DE09h
--------T-155405-----------------------------
INT 15 C - Omniview Multitasker - SWITCHING TO BACKGROUND
AX = 5405h
ES:DX = process swapping in
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5406h
--------T-155406-----------------------------
INT 15 C - Omniview Multitasker - SWITCHING TO FOREGROUND
AX = 5406h
ES:DX = process swapping in
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5405h
--------T-155407-----------------------------
INT 15 C - Omniview Multitasker - EXIT NOTIFICATION
AX = 5407h
Note: called by OmniView to notify programs loaded before OmniView of state
changes inside OmniView
SeeAlso: AX=5400h,INT 2F/AX=DE03h
--------!---Section--------------------------


  3 Responses to “Category : Recently Uploaded Files
Archive   : INTER45A.ZIP
Filename : INTERRUP.B

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/