TITLE: ROM BEEP CODES AND ERROR MESSAGES

CONTENTS:
- FATAL SYSTEM BOARD BEEP CODES
- NON-FATAL SYSTEM BOARD BEEP CODES
- POST AND BOOT ERROR MESSAGES
- INFORMATIONAL MESSAGES
- RUN-TIME ERROR MESSAGES

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- FATAL SYSTEM BOARD BEEP CODES
The table below describes the beep codes and error codes that are
written to Port 80h for fatal system board errors. These errors
will cause the system to halt.

Note: No beep code is sounded if a test is aborted while in progress.
The contents of port 80h can be read to identify the area of failure.
*******************************************************************************

BEEP CONTENTS
CODE PORT 80h DESCRIPTION
none 01h CPU register test in progress
1-1-3 02h CMOS write/read failure
1-1-4 03h ROM BIOS checksum failure
FATAL 1-2-1 04h Programmable Interval Timer failure
SYSTEM
BOARD 1-2-2 05h DMA initialization failure
ERRORS 1-2-3 06h DMA page register write/read failure
1-3-1 08h RAM refresh verification failure
none 09h 1st 64K RAM test in progress

1-3-3 0Ah 1st 64K RAM chip or data line failure multi-bit
1-3-4 0Bh 1st 64K RAM odd/even logic failure
1-4-1 0Ch Address line failure 1st 64K RAM
1-4-2 0Dh Parity failure 1st 64K RAM

BEEP CONTENTS
CODE PORT 80h DESCRIPTION
2-1-1 10h Bit 0 1st 64K RAM failure
FATAL 2-1-2 11h Bit 1 1st 64K RAM failure
SYSTEM 2-1-3 12h Bit 2 1st 64K RAM failure
BOARD 2-1-4 13h Bit 3 1st 64K RAM failure
ERRORS
2-2-1 14h Bit 4 1st 64K RAM failure
2-2-2 15h Bit 5 1st 64K RAM failure
2-2-3 16h Bit 6 1st 64K RAM failure
2-2-4 17h Bit 7 1st 64K RAM failure

2-3-1 18h Bit 8 1st 64K RAM failure
2-3-2 19h Bit 9 1st 64K RAM failure
2-3-3 1Ah Bit A 1st 64K RAM failure
2-3-4 1Bh Bit B 1st 64K RAM failure

BEEP CONTENTS
CODE PORT 80h DESCRIPTION
2-4-1 1Ch Bit C 1st 64K RAM failure
FATAL 2-4-2 1Dh Bit D 1st 64K RAM failure
SYSTEM 2-4-3 1Eh Bit E 1st 64K RAM failure
BOARD 2-4-4 1Fh Bit F 1st 64K RAM failure
ERRORS
3-1-1 20h Slave DMA register failure
3-1-2 21h Master DMA register failure
3-1-3 22h Master interrupt mask
register failure

3-1-4 23h Slave interrupt mask register failure
none 25h Interrupt vector loading in progress
3-2-4 27h Keyboard controller test failure
none 28h CMOS power failure and checksum
calculation in progress

BEEP CONTENTS
CODE PORT 80h DESCRIPTION
FATAL none 29h CMOS configuration validation in progress
SYSTEM 3-3-4 2Bh Screen memory test failure
BOARD 3-4-1 2Ch Screen initialization failure
ERRORS
3-4-2 2Dh Screen retrace test faulure
none 2Eh Search for video ROM in progress
none 30h Screen believed operable

none 30h Screen believed running with video ROM
none 31h Monochrome monitor believed operable

none 32h Color monitor (40 column) believed operable
none 33h Color monitor (80 column) believed operable



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- NON-FATAL SYSTEM BOARD BEEP CODES
The table below describes the beep codes and error codes that are written
to Port 80h for non-fatal system board errors.
*****************************************************************************

BEEP CONTENTS
CODE PORT 80h DESCRIPTION

NON-FATAL 4-2-1 34h No time tick
SYSTEM 4-2-2 35h Shutdown failure
BOARD 4-2-3 36h Gate A20 failure
ERRORS
4-2-4 37h Unexpected interrupt in protected mode
4-3-1 38h Memory high address line failure at
010000h - 0A0000h
NON-FATAL
SYSTEM 4-3-3 3Ah Timer chip counter 2 failed
BOARD 4-3-4 3Bh Time-of-day clock stopped
ERRORS
4-4-1 3Ch Serial port test failure
4-4-2 3Dh Parallel port test failure
4-4-3 3Eh Math coprocessor test failure



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- POST AND BOOT ERROR MESSAGES
The table below lists the POST and boot error messages, and suggests possible
causes and solutions for each message.
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*
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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Diskette drive 0 seek The A drive has either Check the A drive
to track 0 failed failed or is missing


Diskette drive reset The diskette adapter has Check the diskette
failed failed adapter


Diskette read failure The diskette is either not Replace the diskete
-- strike F1 to retry formatted or is defective with a bootable
boot diskette and retry
boot

Display adapter failed; - The color/monochrome - Change the switch to
using alternate switch is set wrong the correct setting
- The primary video adapter - Check the primary
failed video adapter
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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Gate A20 failure Protected mode cannot be Most likely, the
enabled problem is with the
system board: check
the system board

Hard disk conroller The controller card has Replace the controller
failure failed card


Hard disk failure Retry boot. If that
doesn't work replace
hard disk


Hard disk read failure: The working diskette or the Retry boot. If that
Strike F1 to retry boot hard disk is defective doesn't work, replace
the diskette

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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Invalid configuration - Memory size is configured Run the SETUP utility
information-- Please wrong program
run SETUP program
- Display adapter is
configured wrong

- Wrong number of diskette
drives


Keyboard clockline Either the keyboard or the Make sure the keyboard
failure the keyboard cable cable is connected
Keyboard dataline connection is defective properly
failure


Keyboard controller The keyboard controller Check the keyboard
failure firmware has failed controller

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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Keyboard is locked: The keyboard lock located
Please unlock at the front of the
computer is activated


Keyboard stuck key A key(s) is jammed Try pressing the
failure key(s) again


Memory address line Circuitry associated with Check the circuitry
failure at hex-value, the memory chips has failed
read hex-value
expecting hex-value


Memory data line One of the memory chips or Try replacing the
failure at hex-value associated circuitry has memory chips
read hex-value -- hex- failed
value
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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Memory high address Circuitry associated with Check the circuitry
line failure at hex- the memory chips has failed
value -- hex-value

Memory odd/even logic Circuitry associated with Check the circuitry
failure at hex-value memory chips has failed
read hex-value
expexting hex-value

Memory parity failure One of the memory chips has Try replacing the
at hex-value--hex- failed memory chips
value

Memory write/read One of the memory chips has Try replacing the
failure at hex-value failed memory chips
read hex-value
expecting hex-value
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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
No boot device Either diskette drive A:, Retry boot. If that
available--strike F1 the hard disk, or the doesn't work, replace
to retry boot diskette itself is the floppy diskette or
defective the hard disk

No boot sector on hard The C:drive is not Format the C: drive
disk--strike F1 to formatted
retry boot

No timer tick The timer chip has failed Check the timer chip
in the system board

Not a boot diskette -- The diskette in drive A: is Replace the diskette
strike F1 to retry boot not formatted as a bootable with a bootable
diskette diskette and retry
boot

Hex-value Optional ROM The peripheral card Replace the peripheral
bad Checksum = hex- contains a defective ROM card
value
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POST & BOOT MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
Shutdown failure The Keyboard controller or Check the keyboard
its associated logic has controller
failed

Time-of-day clock The CMOS Time-of-day clock Run the SETUP utility
stopped chip has failed


Timer chip counter 2 Check the timer chip
failed system board


Timer or interrupt Either the timer chip or Check the timer chip
controller bad the Interrupt Controller is of the Interrupt
defective controller on the
system board

Unexpected interrupt in The non-maskable interrupt Check the system
protected mode (NMI) port can't be board, particularly
disabled the logic associated
with the non-maskable
interrupt



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- POST INFORMATIONAL MESSAGES
The table below lists the POST information messages and their meanings.

********************************************************************************
____________________________________________________
INFORMATIONAL MESSAGE MEANING
====================================================
Hex-value Base Memory, Indicates the amount of
hex-value Expansion memory that has tested
successfully

Decreasing available Immediately follows any
memory memory error message, and
informs you that the memory
chips are failing

Memory test terminated Indicates that you have
by keystroke pressed the Spacebar while
the memory tests were
running. This stops the
memory tests.
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INFORMATIONAL MESSAGE MEANING
====================================================
Phoenix 80286 ROM BIOS This copyright message is
Version 3.0 Copyright displayed on the initial
1985, 1986,1987 boot screen and indicates
Phoenix Tech All that POST has started
Rights Reserved

Strike the F1 key to This message indicates that
continue an error was found during
POST. Pressing the F1 key
allows the system to
attempt to boot



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- RUN-TIME ERROR MESSAGES
Run-time messages are displayed if an error occurs after the
boot procedure is complete. The table below gives possible
causes and solutions for the run-time messages.
****************************************************************************
___________________________________________________________________________
RUN-TIME MESSAGE POSSIBLE CAUSE SOLUTION
===========================================================================
I/O card parity The peripheral card has Type (S)hut off NMI
interrupt at address. failed
Type (S)hut off NMI. Note: This will
(R)eboot, other keys to temporatiry allow you
continue to continue. You must
replace the peripheral
card


Memory parity interrupt A memory chip(s) has failed Type (S)hut off NMI
at address. Type (S)hut
off NMI. (R)eboot, Note: This will only
other keys to continue temporarily allow you
to continue.You must
replace the memory
chips(s).


Unexpected HW interrupt This could be any hardware Check the hardware
at address. Type (S)hut related problem.
off NMI,(R)eboot, Note: This message will not
other keys to continue be displayed if INTENHD is
false


Unexpected SW interrupt There is an error(s) in the Try turning the
at address. Type (S)hut software program. machine off and then
off NMI, (R)eboot, Note: This message will not on again. If that
other keys to continue be displayed if INTENHD is doesn't work, check
false the program.


Unexpected type 02 There is an error(s) in the Try turning the
interrupt at address. software program. machine off and then
Type (S)hut off NMI, on again. If that
(R)eboot, other keys to Note: This message will not doesn't work, check
continue be displayed if INTENHD is the program
false.

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