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OS/2 2.0 README (03/92)

In OS/2* Version 2.0, IBM* performed the most
comprehensive testing ever done on any version of
the OS/2 operating system. This included
extensive DOS, Windows, and OS/2 application
compatibility validation in addition to stress,
usability, and performance testing. While most
users will not require the information in this
README, it contains unique application
compatibility information and other useful tips
and techniques that might be helpful in specific
situations. Some of the information is intended
for the more advanced user or for the user already
familiar with various functions provided with OS/2

The information was largely collected during the
final comprehensive system and compatibility
testing phases, which involved over 30,000 users
of early versions. It was not finalized before
the publications were printed and we want to share
this information with you.

If you want to search for a specific topic, click
on EDIT in the menu bar above, then on FIND in the
menu. For more information about searching, and
for other help related to the System Editor, click
mouse button 1 on HELP, then click on HELP INDEX.

The scope of this information includes:

o Service and Support Information

o Installation

o OS/2 Workplace Shell

o Application Compatibility

o Performance

o Windows** Version 3.0 Programs Support

o Video/Graphic Support

o Hardware Considerations


OS/2 2.0 users can access electronic support for
current technical information and exchange
messages with other OS/2 users, 24 hours a day.
If you run into problems or simply need a question
answered about OS/2 2.0, there are two ways to get
help electronically: the new IBM BBS (Bulletin
Board System) and CompuServe.

For information about registering for and
accessing the IBM OS/2 BBS, call 1-800-547-1283.

For CompuServe membership information, call
1-800-848-8199, and ask for representative 239.

If you already are a CompuServe member, simply
type "GO IBMOS2" at the ! prompt to access the
IBMOS2 forum.


o After installation, and before you run any DOS
or Windows program, we recommend you shut down
your system.

o Support for the High Performance File System
(HPFS) was not added to your system if you
installed OS/2 2.0 using either "Install all
features" or "Install preselected features,"
and your system:

- Has 6MB or less of memory, and
- Did not previously have HPFS support.

To install HPFS support, use the Selective
Install object in the System Setup folder.

o If you select "Automatically update CONFIG.SYS
and AUTOEXEC.BAT," some device-driver
statements might not be copied to your new
CONFIG.SYS file with a REM statement as stated
in the "Installation Guide." Select instead,
"User edit CONFIG.SYS and AUTOEXEC.BAT" to
copy these device drivers to your new

o The Setboot utility program supports an
immediate-restart function that will restart
the system to the specified drive without
going through the Boot Manager Menu. The
parameter is /IBD:DRIVE, where "DRIVE" is the
letter of a startable partition (for example,
SETBOOT /IBD:E). This example would start the
logical drive E without displaying the Boot
Manager Menu. If the Boot Manager is not
present, then only drive C can be specified.

o If you are using Boot Manager, and one of your
partitions contains OS/2 Version 1.3 with Dual
Boot, copy BOOT.COM from the OS/2 2.0 \OS2
subdirectory to the OS/2 1.3 \OS2

o To enable the UNDELETE command, delete "REM"
from the beginning of the following statement
in the CONFIG.SYS file:


o To use the ACDI support provided by PM
Terminal, delete "REM" from the beginning of
the following statement in the CONFIG.SYS


where "d:" is the drive and "x" is either A or

Then restart your system.

If you selected the PM Terminal program with
either "Select features and install" or the
Selective Install object in the System Setup
folder, the ACDI support is activated and you
do not need to change the CONFIG.SYS file.

o Following is additional information for the
"Copying the Response File to a 5-1/4
Diskette" section of Chapter 5 in the "OS/2
2.0 Installation Guide."

If you are installing OS/2 2.0 in a non-Micro
Channel computer:

- Delete the following additional files from
Installation Diskette 1:


- Delete the following from the CONFIG.SYS


If you are installing OS/2 2.0 in a Micro
Channel computer:

- Delete the following additional files from
Installation Diskette 1:


- Delete the following from the CONFIG.SYS


o IBM's testing of a beta Windows Version 3.1
environment indicates that the OS/2 2.0
Installation program will not configure your
WIN-OS/2 desktop. If the Windows directory
that is found is from a Windows Version 3.1
environment, either change the DOS PATH to
point to a Windows Version 3.0 environment, or
select the default environment.

o If you have configured your system for a touch
device, the System Configuration window in the
Selective Install program will incorrectly
show "PS/2 Style Pointing Device" as the
default mouse selection.

To change a touch device to a different
pointing device, select "Mouse" on the System
Configuration window, and then select the
pointing device you want to use. Finally,
select the OK push button.

o Occasionally, the Migrate Applications program
might not find all applications. In this
case, retry the Find Programs operation.


o Because of device-resource limitations, when
too many applications are open, or when too
many bit maps are visible on the screen, new
icons, tabs, or other bit maps might not be
drawn. You can fix this situation by closing
unused folders and applications so their
device resources can be used by other

o In certain low resource situations, the final
shutdown message might not appear after a
shutdown is performed. To ensure that
shutdown has completed, wait until all disk
activity stops before powering down or
restarting your computer.

o If you change the title of an object from
within the Find Results folder, the name of
the original object will be changed.

o If you formatted your installation drive with
HPFS, you might not be able to access files in
the Desktop folder from DOS or Windows

o In the Help information for Find, disregard
any references to page 2.

o If you encounter a situation in which you
cannot restart the operating system, press and
hold the left Ctrl, left Shift, and F1 keys.
This disables the automatic program startup
feature of the desktop. Press and hold the
keys when the white screen first appears and
hold them down until the icons appear on the

o If you start the operating system and you do
not see some of the system icons (such as OS/2
System or Shredder), there is a function that
will allow you to reset the desktop to its
default configuration. WARNING: USING THIS

To perform this function, do the following:

1. Restart the computer.

2. Before the first OS/2 Logo panel appears,
hold down Alt+F1 for 20 seconds.

When the operating system was installed,
certain system files (CONFIG.SYS, OS2.INI, and
OS2SYS.INI) were placed in the \OS2\INSTALL
subdirectory. When you perform the recovery
function described above, the current versions
of those files are automatically renamed and
are replaced by the default installation
versions. If you have a STARTUP.CMD file,
that file is also renamed, causing the startup
feature to be deactivated.

o If you were previously using the OS/2 2.0
Limited Availability version and you installed
OS/2 2.0 without reformatting, you might not
be able to delete existing associations. If
this occurs, make a copy of the program object
and discard the original.

o If you were previously using the OS/2 2.0
Limited Availability version and you installed
OS/2 2.0 without reformatting, you must update
the path and file name of

- OS/2 System Editor to \OS2\APPS\E.EXE
- Clipboard Viewer to \OS2\APPS\CLIPOS2.EXE


o If you plan on using an HP PaintJet printer to
print bit maps, make sure you set the
printer-specific format check box in the
queues option of the printer object.

o If you are going to install the HP LaserJet
printer driver over an existing driver, be
sure to delete all the old *.FNT files FIRST.
You can do this by deleting the printer driver
from the Workplace Shell printer object and
responding "Yes" when asked if the driver
files should be deleted from the hard disk.

o If you use the "print while spooling"
printer-object setting, and your printer stops
printing, close the job that was printing.

o To improve the performance of viewing a
network printer object, use a long refresh
interval or set the interval to 0 (no

o If you move the network object from the
desktop to another folder, the network printer
object template will not appear the next time
you start the system. To make it reappear,
move the network object back to the desktop
and restart the system.

o If you delete a printer definition, use the
Delete option of the pop-up menu.


Most DOS, Windows, and OS/2 programs run under
OS/2 2.0 without any modification. A few need
specific attention, such as changes to DOS
settings, for optimum performance. Some
categories of programs, however, do not work
correctly with OS/2 2.0 because of their design,
or because they use undocumented interfaces, or
because they perform restricted activities. The
following list identifies these categories of

1. DOS extenders that require exclusive access to
the 80386 control registers, such as the
Virtual Control Program Interface (VCPI), are
not supported because they would violate the
integrity of the system. The DOS Protect-Mode
Interface (DPMI 0.9), the Expanded Memory
Specification (EMS), and the Extended Memory
Specification (XMS) are supported.

2. Programs that directly address the physical
disk sectors to perform disk-write operations
are not supported. These operations would
violate the integrity of the system. This
category includes most DOS UNDELETE programs.

3. Some Windows programs make use of the Windows
accessory programs, like the Calculator. If
you already had Windows Version 3.0 installed
and you did not format your hard disk when you
installed OS/2 2.0, the accessory programs are
on your hard disk and are supported by OS/2
2.0. However, the accessory programs are not
part of the WIN-OS/2 environment included with
OS/2 2.0.

4. Programs (and hardware) that require the
Windows Enhanced mode are not supported. This
mode uses an unsupported memory-management
method. Programs that run in the Windows
Standard mode and Real mode are supported.

5. Programs that manipulate the 80386 control
registers, such as 386 DOS debuggers, are not
supported; this would violate system

6. The following fax boards and programs contain
timing sensitivities that might prevent
reliable operation:

o Cardinal FAX
o Practical Peripherals
o Smart Fax
o Twincomm 24/96

7. For more reliable DOS communications
performance on slower systems, the combined
baud rate should not exceed 9600 bps for one
or more concurrent DOS applications.

Our testing has identified the following programs
that perform one or more of the activities
described above.

o Ansel for Windows
o Bound Checker (DOS)
o Central Point Backup for Windows
o Close-Up (Windows)
o Desert Storm CD-ROM (Windows)
o Distinct Back-Up (Windows)
o DoDot 3.0 (Windows)
o Fax Concentrator (DOS)
o Magic-CV (DOS)
o Mathematica 2.0 (Windows)
o MusicPrinter Plus 4.0 (DOS)
o OmniPage Professional 1.0 (Windows)
o Oracle (DOS)
(There is an OS/2 version of this program.)
o Perceive for Windows
o Realizer 1.0 (Windows)
o Sherlock Holmes CD-ROM (DOS)
o Smart Fax (DOS)
o Soft-ICE (DOS)
o Splash 1.01 (DOS)

In addition to the restricted activities described
previously, some general conditions you should be
aware of are in the following list:

o Some DOS and Windows programs run correctly
only in full-screen sessions. Any Windows
program that does not use the Windows API to
change the video mode should be run in a
WIN-OS/2 full-screen session.

o Some DOS and Windows programs must be
installed or run in a "Specific-DOS" session;
that is, in a session that was started by
booting from an actual version of DOS.

o Some programs run in OS/2 DOS or WIN-OS/2
sessions, but require that you install the
program under DOS.

o Windows programs cannot start DOS sessions or
DOS programs.

o DOS programs that use low-level file system
calls cannot access HPFS disks.

o Code-page switching support is not available
for graphics mode in DOS sessions.

o Some DOS and Windows programs use security
keys as protection against copyright
infringement. The security key is a 25 pin
connector that is connected to the parallel
port of the computer on which the program is
executing. The program checks to see if the
connector is attached and, if the connector is
not present, the program is assumed to be an
illegal copy. When more than one DOS session
is running one of these programs, a SYS1799
error can result. This occurs because the
programs that use these security keys do not
de-allocate the parallel port if a second
session is started for a program that also
requires the security key. This error is the
result of a direct I/O parallel port
contention mechanism that protects the user
from possible data corruption. To disable
this mechanism press Ctrl-Alt-PrtSc while the
DOS session that first performed direct I/O to
the parallel port has the keyboard focus.

o If your Windows Multimedia Extension programs
do not work correctly after being migrated to
OS/2 2.0, re-install them under WIN-OS/2.

The following list provides information about the
compatibility of specific programs with OS/2 2.0.
This information is version-specific; later
versions of the same program might operate
correctly. Some program manufacturers already
have resolved incompatibility issues and have
fixes available; these are noted.

o Action! Sampler 1.0 (Windows)

must be set to 5 or greater.

o Adobe Type Manager (Windows)

- When using an IBM 4029* printer in PPDS
mode with Adobe Type Manager, some Windows
programs may not function correctly. If
this occurs, do not use the printer
resident fonts. To disable printer
resident fonts, bring up the control panel
of the Windows Adobe Type Manager and
ensure that the selection "Use Pre-built
or Resident Fonts" is disabled.

o After Dark (Windows)

- To run in a WIN-OS/2 window, change the
object's settings to hide or minimize the
icon to the desktop.

o Aldus Pagemaker 4.0 (Windows)

- The spelling checker cannot locate the
- Deselect the public setting to use the
- If you experience incorrect output when
spooling Standard format files to the
printer, set the printing to RAW mode. To
do this, take the following actions:
1. Go to the Printer icon on the desktop
2. Select Open, then Settings, then Queue
3. Ensure that Printer Specific Format is

o Aldus Persuasion 2.0 (Windows)

- Use the parallel ports to print.
- Deselect the public setting to use the

o Arts & Letters Graphics Editor 3.1 (Windows)

- The DECIPHS utility program requires that
a DOS session be started from the Windows
environment; this is not supported.
- To run in a WIN-OS/2 window, change the
object's settings to minimize to the
- The directory created by Arts & Letters is
named A&L. The "&" character is a
reserved character of the command shell,
CMD.EXE; it is used for conjugated command
lines. To change to the A&L directory
with the CD command you must use one of
two methods of quoting the directory name.
The first method is to prefix the "&" in
A&L with a ^ (caret, shift 6):
The second method is to surround the
entire directory name with quotation marks
CD "A&L"
- If you are running Arts & Letters and you
get a system error (a GDI trap), you must
restart the operating system before
running the program again. This is
because the program left a portion of
itself running when it ended and will not
start a new copy of itself while that
portion is running. This also means that
when you restart the computer, Arts &
Letters will start again automatically.
It is recommended that you close the copy
that is launched on system startup and
start the program from its icon when you
intend to run it in a window.

o AutoCAD Version 10 (DOS)

- Close the program from the desktop.

o AutoCAD (OS/2)

- Some of the background colors are set to
an unusually pale color that does not show
up well on XGA monitors.

o AutoManager 4.0 (DOS)

- The version of the program that uses
extended memory uses an unsupported DOS
memory extender. Use the real-mode
- The program expects COMMAND.COM to be in
the root directory of drive C:\. Copy
COMMAND.COM from the C:\OS2\MDOS directory
to C:\.

o Borland C++ 2.0 (DOS)

- Set the DPMI_DOS_API DOS setting to

o Central Point Backup for DOS 7.1 (DOS)

- Displays meaningless characters when
running in a DOS window session. Run this
program only in a DOS full-screen session.

o Central Point PC Tools Deluxe 7.1 (Windows)

- Many of the utility programs require
starting a DOS session from Windows; this
is not supported. Start these programs
from a separate DOS session.
- The backup feature of this program
performs in a manner similar to Central
Point Backup for Windows, which is in the
list of programs that perform restricted
activities. If you experience difficulty
backing up on a diskette, back up on an
alternate device, such as a network drive
or a tape drive.

o Commander Keen (DOS)

setting to OFF.

o Control Room 1.0 (DOS)

- You must run this program in a DOS
full-screen session for the screen
blanking feature to work correctly.

o CorelDRAW 2.0 (OS/2)

- If you do a large amount of printing while
in this program, it is possible that you
might run out of system resources. To
avoid this, you should periodically save
your work and exit CorelDRAW, then restart
the program and continue your work.

o CorelDRAW 2.0 (Windows)

- Install the program in a DOS session.
- Run the program in a WIN-OS/2 full-screen

o CorelDRAW 2.1 (Windows)

- To install this program:
-- Start a DOS session.
-- Run FFIX /date (Note that "date" must
be lowercase).
-- Run WINOS2 (from the command line).
-- Install the program.
-- Exit WIN-OS/2.
-- Run FFIX /u.
- Run the program in a WIN-OS/2 full-screen

o dBase IV 1.1 (DOS)

- Set the DOS_FILES DOS setting to 30. Set
the DOS_VERSION DOS setting to
DBASE.EXE,5,0,255. With Hyperdisk, set
- When using Hyperdisk, you might have to
adjust the EMS and XMS memory limits.
- With the multi-user version, the program
must be run in a Specific-DOS session.

o Designer (OS/2)

- The MIRRORS.DLL that comes with this
program must be installed in the program
directory, as opposed to the C:\OS2\DLL

directory, and the program must be started
from this directory. This is because OS/2
2.0 comes with its own dynamic link
library named MIRRORS.DLL.

o Drafix CAD Version 1.11 (Windows)

- Run the program in a WIN-OS/2 full-screen

o Drafix CAD Version 3.0 (Windows)

- Run the program in a WIN-OS/2 full-screen

o Dynacomm Asynchronous OS/2 (OS/2)

- The DLL's included with this product must
not be in the same directory as the
executable file. Put them in a separate
directory and add that directory to the
end of the LIBPATH.

o Enhanced Editor (OS/2)

- The OS/2 Enhanced Editor supports up to 99
fonts. If additional fonts are installed,
unpredictable results might occur.

o F19 (DOS)

- Set the HW_ROM_TO_RAM DOS setting to ON
setting to OFF.

o F-117A Stealth Fighter 2.0 (DOS)

setting to OFF.
- If the program appears to stop at a blank
screen soon after you start it, press ESC
and the program will continue. Once you
are past the opening screens, the program
runs correctly.

o Fastback Plus 2.1 and 3.04 (DOS)

- If you experience difficulty backing up on
a diskette, back up on an alternate
device, such as a network drive or a tape

o FastLynx 1.1 (DOS)

- To use the serial port with this program,
statement from CONFIG.SYS. Using the
parallel port works correctly.
- Due to its high speed, the program
sometimes fails. If this occurs, simply
end the program; system integrity is not
compromised. To minimize the possibility
of this error condition, set the following
DOS settings:

o FormBase 1.2 (Windows)

- The SHARE statement is automatically added
to AUTOEXEC.BAT during program
installation. Use an editor to remove the
SHARE command from AUTOEXEC.BAT.
- When running this program and Lotus 123 in
the same Windows session, this program
must be started first.

o Form Publisher (Windows)

- Ensure that the program's printer driver
is installed before running the program.

o FotoMan (Windows)

- Run the program in a WIN-OS/2 full-screen

o Framework III 1.1 (DOS)

- The program expects COMMAND.COM to be in
the root directory of C:\. Copy
COMMAND.COM from the C:\OS2\MDOS directory
to C:\.
- Disable the program's print spooler; using
it might cause an error.

o Harvard Graphics (Windows)

- When installing this program under
WIN-OS/2, you will receive an error dialog
box. Select OK in the dialog box and
installation will complete successfully.
- When running in a window, the Color
Selection windows are missing the Color
Selection grid. Run the program in a
WIN-OS/2 full-screen session.

o Harvard Draw (Windows)

- When installing this program under
WIN-OS/2, you will receive an error dialog
box. Select OK in the dialog box and
installation will complete successfully.

o hDC FileApps 1.0 (Windows)

- Uses the Windows Notepad for a README text
file during installation. Indicate that
you do not wish to read the file and
installation will continue.

o HP New Wave 3.0 (Windows)

- Install the program under DOS. If you
experience problems with program or
session termination, set UseOS2shield=0 in
directory on your start-up drive). If
that does not help, run the program in a
full screen WIN-OS/2 session.

o IBM 3363 Optical Disk Drive*

- The software for this product must be run
in a Specific-DOS session that is started
from your A: drive.
- You should run only a small number of
other processes, when using this product.

o IBM PC/3270 V2.0* (DOS)

- First, the program must be migrated using
the OS/2 Migration utility program. Then,
to CGA and add "D:\[path]DXMA0MOD.SYS" and
"D:\[path]DXMC0MOD.SYS" to the DOS_DEVICE
DOS setting.

o IBM PC/3270 V2.0* (Windows)

- First, the program must be migrated using
the OS/2 Migration utility program. Then
add " /C PC3270WO.BAT" to the DOS_SHELL
WIN-OS/2 setting and add
"D:\[path]DXMC0MOD.SYS", and
"D:\[path]PCS802.SYS V=N" to the
DOS_DEVICE WIN-OS/2 setting. Then on the
WIN-OS/2 Session settings page, set the
"Separate session" setting to ON (by
clicking on the box until a check-mark

o Intel SatisFAXtion

- The installation program displays the
message "You have inserted the wrong
diskette" when changing from disk one to
disk two. After the error message is
displayed, press Enter and the program
will continue with installation.
- At the end of installation of the Intel
SatisFAXtion you are told to remove the
diskette and press any key to reboot your
machine. Instead, shut down the operating
system and restart your computer.
- If SatisFAXtion software is loaded into
each DOS session, it might cause the fax
to stop if another DOS session is started.
Set up one DOS session to be used for
faxing, and load the device driver and
executable files only into that DOS
session. To do this, take the following
2. Cut the last two lines referring to
the Intel SatisFAXtion board to the
clipboard and save the file (using DOS
Command File for the file type).
3. Open a New file.
4. Paste the last two lines into the new
5. Save the new file as FAX.BAT, using
DOS Command File as the file type.
6. Edit CONFIG.SYS and cut the last two
lines relating to the Intel
SatisFAXtion board to the clipboard
(cut only the last line if you do not
have a scanner installed).
7. Save the file using Plain Text as the
file type.
8. In the Command Prompts folder, select
a DOS Full Screen icon, press the Ctrl
key and mouse button two at the same
time, move the mouse pointer to an
empty area in the folder, and release
the mouse button and the Ctrl key.
This creates a copy of DOS Full
9. Put the mouse pointer over your new
icon and press button two.
10. Click on the arrow next to Open, and
select Settings.
11. Go to the Session page and select the
DOS settings push button.
12. Go to DOS_DEVICE and press mouse
button one. Move the mouse to the
dialog area and press button one
(there should be a blinking cursor
13. Paste the text that you cut from the
CONFIG.SYS file and select Save.
14. Go to the General page and replace the
contents of the Title box with FAX (or
whatever other title you choose).
15. If you want to edit the new session's
icon, go to the General page and
select the Edit push button.
16. If you want to have this session start
each time your system starts, move the
icon to the Start Up folder.
17. Whenever you start this session, type
FAX to run the FAX.BAT file before
using the SatisFAXtion board.
Use the fax board in only one session at a
- If you install using this procedure and
you receive error messages, install the
program under DOS.

o King's Quest (DOS)

- Remove the DOS=HIGH statement, if one
exists, from CONFIG.SYS or from the

o LAN Support Program Device Drivers (DOS)

- If you opened a DOS session with the DOS
LAN Support Program (LSP) device drivers,
and subsequently closed the session, you
must ensure that the Token-Ring Adapter is
reset before using the LAN from another
DOS session. To ensure that the
Token-Ring Adapter is reset, use
can be retrieved from CompuServe by
issuing GO IBMOS2 and downloading
they can be retrieved from the IBM
National Support Center Bulletin Board
System by downloading RESTKN.ZIP.
- The IBM Token-Ring Adapter should be used
by only one session at a time.

o LANtastic 4.1 (DOS)

- Run this program in a Specific-DOS
setting to the location of a DOS kernel to
boot from.
- If you are using Artisoft AE-2 or AE-3
adapter cards, set your cards to 8-bit
mode, as described in the adapter

o LapLink III 3.0 (DOS)

- We recommend using the parallel port. To
use the serial port with this program,
comment out the VCOM.SYS and COM.SYS
statements from CONFIG.SYS (by putting
"REM " at the beginning of the line) and
restart the computer. To use the serial
port for other purposes, uncomment the
lines in CONFIG.SYS and restart the

o Linkway Mammals (DOS)

- Photomotion programs might exhibit some
audio breakup and video hesitation during
periods of CD ROM access.

o Linkway Presidents (DOS)

- Photomotion programs might exhibit some
audio breakup and video hesitation during
periods of CD ROM access.

o Lotus 123 for Windows 1.0 (Windows)

- Set the DPMI_MEMORY_LIMIT DOS setting to a
minimum of 3MB.
- After migrating the program to the
workplace shell, copy the file 123W.INI to
the \OS2\MDOS\WINOS2 directory (from the
directory previously containing Windows

o Lotus Freelance Graphics for OS/2 (OS/2)

- If you experience installation problems,
contact the Lotus Development Corporation.
Lotus will provide a fix.
- If you experience problems with the color,
change the palette from the Freelance
menus. Instructions on how to do this can
be found in the Lotus Freelance Graphics
for OS/2 User's Guide. A set of new
default palettes for Freelance Graphics is
available. These can be retrieved from
CompuServe by issuing GO IBMOS2 and
downloading PALETT.ZIP from SECTION 17,
IBMFILES, or they can be retrieved from
the IBM National Support Center Bulletin
Board System by downloading PALETT.ZIP.

o Lotus Freelance Graphics for Windows (Windows)

- The pointer to printer objects points to
Screen Show instead of to the printer.

o Lotus Magellan 2.0 (DOS)

- The UNDELETE function in the program uses
physical sector addressing, which is not
supported. Use the OS/2 UNDELETE command.

o Lotus Notes (OS/2)

- To use Notes 2.x, you must delete the file
QWC.EXE from the Notes program directory.
This file is used only for support in the
field, and, therefore, its removal will
not affect program execution.

o MagiCorp (Windows)

- Running this program with other programs
in the same WIN-OS/2 session might cause a
system halt. Run this program by itself
in a WIN-OS/2 full-screen session.

o Mathcad 3.0 (Windows)

- To install this program:
-- Start a DOS session.
-- Run FFIX /date (Note that "date" must
be lowercase).
-- Install the program (the installation
program is a DOS program).
-- Run FFIX /u.

o MicroProse Civilization (DOS)

- Set the VIDEO_RETRACE_EMUL setting to OFF
and the HW_TIMER setting to ON.

o Microsoft Bookshelf - CD-ROM Reference
Library** (DOS/Multimedia)

- Requires version 6.14 of the mouse device
driver, MOUSE.COM, which comes with the
- Animation programs might exhibit some
audio breakup and video hesitation during
periods of CD ROM access.

o Microsoft Chart 3.0** (DOS)

- Install the program's mouse driver, and

o Microsoft Codeview** (DOS/OS/2)

- When using the protect mode version, CVP
2.2 (for OS/2), trace through the source
code, rather than through the assembler
- In order for the program to work
correctly, delete the PWBHLP.PXT help

o Microsoft Codeview for Windows Version 3.0**

- Run the program in a WIN-OS/2 full-screen

o Microsoft Excel for DOS 2.1** (DOS)

- Set the XMS_MEMORY_LIMIT DOS setting to 0.

o Microsoft Excel for OS/2 3.0** (OS/2)

- The Help index and the Keyboard Help
windows operate incorrectly. Avoid using
these functions.

o Microsoft Excel for Windows 3.0** (Windows)

- Deselect the public setting to use the
- When using dynamic data exchange (DDE),
run in the same WIN-OS/2 session as the
Windows program it is communicating with.

o Microsoft Money 1.0** (Windows)

- Calls the Windows Calculator accessory
program. Use the OS/2 Calculator
mini-application program in the
Productivity folder.

o Microsoft QuickC** (Windows)

- Run the program in a WIN-OS/2 full-screen

o Microsoft Project for Windows 1.0** (Windows)

- Must be installed in a DOS session.

o Microsoft Windows 3.0** (DOS)

- We recommend that you run Windows programs
under WIN-OS/2, which supports both
Standard and Real mode Windows programs.
If, however, you choose to run this
program, run it in Real mode only.

o More Windows (Windows)

- If you use the Full-Page Paper White mode
or Full Screen Color mode the screen might
be disrupted. Avoid using these modes.

o National Geographics Mammals (DOS)

- Photomotion programs might exhibit some
audio breakup and video hesitation during
periods of CD ROM access.

o The Norton Backup 1.2 (DOS)

- You might experience diminished
performance when backing up to diskette.

o The Norton Desktop (Windows)

- This program assumes that, if it is not
the first program loaded, another desktop
is running. Include the UseOS2shield=0
statement in SYSTEM.INI (in the
\OS2\MDOS\WINOS2 directory on your
start-up drive).
- If you experience difficulty formatting a
diskette, use the OS/2 FORMAT command. If
you experience difficulty backing up on a
diskette, back up on an alternate device,
such as a network drive or a tape drive.
- Run the program in a WIN-OS/2 full-screen

o The Norton Utilities 5.0 (DOS)

- The UNDELETE functions require physical
sector addressing, which is not supported.
Use the OS/2 UNDELETE command.
- The utility programs that manipulate the
hard disk (for example, UNDELETE,
Doctor, and the Disk Editor) can cause a
system halt. Some of these programs can
be used on floppy diskettes.

o PaintShow Plus 2.21 (DOS)

- Load the version of MOUSE.COM that comes
with the program, before starting the

o Paradox 3.5 (DOS)

- The version of the program that uses
extended memory uses an unsupported DOS
memory extender. Use the standard version
of the program.

o Peachtree Complete III 5.0 (DOS)

- Set the DOS_FILES DOS setting to 60.
- The program's Lookup function does not
list all the companies that have been
entered into the program's list of
companies; it displays meaningless

o Perform Pro 1.0 (Windows)

- Run the program in a WIN-OS/2 full-screen

o PFS: First Choice (DOS)

- When the program is run in a DOS window
the mouse pointer does not reflect tool
- Set the baud rate to 2400 or lower when
using the communication feature.

o PFS: WindowWorks 1.75 (Windows)

- Run the program in a WIN-OS/2 full-screen

o Photostyler (Windows)

- Run the program in a WIN-OS/2 full-screen

o Publisher's PowerPak 2.1 (Windows)

- Create the directory
before running the installation batch

o Quattro Pro 3.0 (DOS)

- Install printers from within the program,
rather than during program installation.

o Quicken (DOS)

- Remove the DOS=HIGH statement, if one
exists, from CONFIG.SYS or from the

o Quicken for Windows (Windows)

- Calls the Windows Calculator accessory
program. Use the Calculator
mini-application program in the
Productivity folder.

o Risk (DOS)

- Do not use the program's shutdown

o SantaFe Media Manager (DOS)

- To install this program:
-- Start a DOS session.
-- Run FFIX /find (Note that "find" must
be lowercase).
-- Install the program.
-- Run FFIX /u.

o SideKick (OS/2)

- A printer must be installed and present on
the desktop to use the Notepad.

o Signmaster 5.11 (DOS)

- The plot/preview feature causes an illegal
instruction to be issued.

o Soft Term (OS/2)

- In the Send File and Receive File windows,
the first time the drive is changed the
Directory window updates incompletely.
After the first time, the Directory window
works normally.

o SoundBlaster (DOS)

- The SBTEST utility program reports an
incorrect DMA level during installation.
Disregard the error message and continue
with installation. The program will be
installed correctly.
- The PARROT program does not run in a DOS

o Space Quest IV (DOS)

that the program is suspended when it is
placed in the background.
- Set up the program so that it does not use
extended memory.
- For best performance, run this program in
a DOS full-screen session.
- For computers with a SoundBlaster card,
change to the drive and directory which
contains Space Quest IV and enter
on the command line.

o SQLWindows 3.0 (Windows)

- The program accesses drive A: at
intermittent intervals. Keeping a scratch
diskette or an empty diskette in drive A:
will save you from having to respond to
"The A: device is not ready" error

o Turbo C++ 2.0 (DOS)

- The version of the program that uses
extended memory uses an unsupported DOS
memory extender. Use the standard version
of the program.

o Turbo Debugger 2.01 (DOS)

- The version of the program that uses
extended memory uses an unsupported DOS
memory extender. Use the standard version
of the program.
- TD386, the 386 version of Turbo Debugger,
manipulates the 80386 control registers;
this is not supported.

o Turbo Debugger for Windows (Windows)

- Run the program in a WIN-OS/2 full-screen
- The screen is temporarily corrupted when
this program is called from Turbo C++.
The screen is restored on the first
repaint (a repaint can be forced by
clicking the mouse on several different

o Turbo Pascal 6.0 (DOS)

- The version of the program that uses
extended memory uses an unsupported DOS
memory extender. Use the standard version
of the program.

o The Way You Work (DOS/Windows)

- Install this program under DOS. Once
installed, the program can be run in a DOS
or WIN-OS/2 session.

o Windows Multimedia Extensions (Windows)

- If you are running this program and
another program that uses the audio
adapter at the same time, unpredictable
results might occur.
- The OS/2 Multimedia Presentation Manager
avoids this problem.

o WINFAX PRO (Windows)

- Run this program only in a WIN-OS/2
full-screen session.
- If you are using Dynamic Data Exchange
(DDE), avoid switching away from the
WIN-OS/2 full-screen session in which you
are running; switching from the WIN-OS/2
session to another session might break the
DDE link.

o Wing Commander II (DOS)

- If you are running on a slower computer,
turn the sound option off.

o WordPerfect for Windows (Windows)

- Change to the directory that contains
(To enable WordPerfect for Windows to run
under DOS and Windows 3.0 again, run
UNFIXWP in a similar manner.)

o WordPerfect Office 3.0 (DOS)

- Install the keyboard-enhancement utility
program manually after program
installation, by adding it to CONFIG.SYS.

o Xtree Pro Gold 2.0 (DOS)

- The Zip Manager feature cannot find the
zip file it is to act upon. Avoid using
this feature.


Following are some performance considerations that
you should be aware of. For more performance
guidelines, see the "Information and Planning
Guide" document that can be obtained through your
point of purchase or retrieved through CompuServe.

The minimum memory requirement for OS/2 2.0 is
4MB. (This includes up to 128KB that is used on
some machines for ROM to RAM remapping).

Some systems use more than 128KB for other
purposes, so less than the minimum required memory
is available. On these systems, you might need
another 512KB to 1MB to satisfy the minimum
requirements. Check your system to see if it
offers a way to return the memory so that you can
return to the minimum requirement.

Users concerned with response times when using
some system functions, such as loading programs,
starting sessions, and switching between sessions,
can improve performance by increasing system
memory. If you are running on a constrained
system (small hard disk, 16-MHz or less processor,
4MB of memory), an additional 2MB of memory will
improve performance. In the entry memory system
(4MB), the recommended file system is the FAT file


The system automatically pre-allocates the
SWAPPER.DAT file based on the size of installed
memory. This is done to optimize performance and
reduce disk fragmentation. To tune the size of
the swapper file, see the information about
SWAPPATH in the "Command Reference."


Many performance changes have been incorporated
into OS/2 2.0 File Systems. Both file systems
read ahead (for sequential I/O), lazy write to
disk, and accept threshold parameters.

A disk cache size is preselected by the system
based on installed memory, disk size, and file
systems installed. The default for the entry
memory system (4MB) is a cache size of 128KB. To
tune the size of the disk cache, see the
information about DISKCACHE in the "Command


You can improve the performance of some DOS
applications by adjusting the DOS settings. If
the application does not require extended or
expanded memory, these values can be set to zero.
This will provide maximum performance.

Some DOS applications use polling techniques to
poll the system for work. An example is an
application that appears to be idle at an input
prompt, but is in fact polling the keyboard
looking for keystrokes. Use the IDLE SENSITIVITY
choice to detect this occurrence and put the
application to sleep when it is polling.


Windows applications are generally started in one
WIN-OS/2 session, unless specifically set to run
in their own WIN-OS/2 session. If you use several
applications simultaneously, you might want to
increase the DPMI memory limit before starting the
first application. The first application started
determines the DPMI memory available for all
subsequent Windows applications that are used.

In low memory configurations, you can run multiple
Windows applications in one WIN-OS/2 session. This
reduces both memory and swapper-file requirements.

With a WIN-OS/2 window session, a new session is
created every time you double-click on an active
object. To restore the currently active object:

o Double-click on the minimized application
object, or
o Display the OS/2 Window List and double-click
on the application name.

If you choose to migrate your Windows applications
(at installation time or later using MIGRATE),
most Windows applications will execute in one
WIN-OS/2 session. If you set up a Windows
application and do not use MIGRATE, each program
executes in its own WIN-OS/2 session.

If you are running Windows applications in a
single WIN-OS/2 session, the Windows clipboard can
be changed from PUBLIC to PRIVATE for increased
performance. Setting it to PRIVATE means that it
can be used in the single Windows environment

When a large volume of data is being sent to the
clipboard in a WIN-OS/2 Window session, you might
receive the message:

Data not saved, possible memory or disk space error
This data not available in clipboard

followed by the message:

Do you want to exit clipboard?

Selecting OK to the second message will make the
clipboard private to that WIN-OS/2 session. Data
that was previously sent to the public clipboard
might have remained private. You might want to
use the private clipboard for applications seeing
these messages.

When you exit from a WIN-OS/2 session, the system
leaves the clipboard and DDE loaded. If you will
not be returning to a WIN-OS/2 session, close both
the clipboard and DDE. Use the PM Window List to
see if they are active.

To permanently disable public DDE and clipboard
interchange between Windows applications and PM
applications, and between Windows applications in
separate WIN-OS/2 sessions, edit the
\OS2\MDOS\WINOS2\SYSTEM.INI file. In the [boot]
section you will find the names of these two
programs in the SAVDMApps= line, the MAVDMApps=
line, and the WOS2VDMApps= line. By removing the
names of the programs from these lines, the
programs will not be automatically started.
Adding them back will cause them to be started the
next time a WIN-OS/2 session starts up.


If you have an application that you always use,
you can set up the application in the Startup
folder to load when the system is started.

To avoid reloading frequently used applications,
minimize the application after use and simply
maximize it to use it again. You can find the
application in the window manager.

If you use several different applications, the
icons (objects) can be placed on the desktop or in
a folder. The folder can be set to open when the
system is restarted.


Close opened applications when you are not going
to use them again.

Close folders that you do not need. Also move
commonly used functions out of folders and onto
your desktop, and close the folders that contained
the icons.


To save hard disk space, be certain to install
only the functions you need. If you have
installed the productivity aids and the games, and
later only want a subset of these, delete all
\OS2\APP and \OS2\APP\DLL files and use INSTALL to
selectively install the items you want.
Additionally, delete TUTORIAL.HLP in
\OS2\HELP\TUTORIAL if you no longer need the


o If you are running WIN-OS/2 window sessions,
you cannot have any statement in the
AUTOEXEC.BAT file that prompts the user for

o If you are running a WIN-OS/2 full-screen
session and you have an 8514 display, use DOS
Settings to set VIDEO_8514A_XGA_IOTRAP to OFF

o Current information for WIN-OS/2* window
sessions in high-resolution video modes will
be available from CompuServe, the IBM National
Support Center Bulletin Board System, the OS/2
Bulletin Board System, and IBMLINK.

o Do not use the SETUP.EXE shipped with Windows
3.0. Instead, use the SETUP.EXE shipped with
WIN-OS/2 to ensure your environment will be
properly maintained for use in OS/2 2.0. Use
the Selective Install choice (in OS/2 2.0) to
change video drivers for VGA, 8514, XGA*, EGA,
and CGA, and for mouse drivers.

o If you are running a WIN-OS/2 full-screen
session with an XGA video device driver and
your Windows icons are not clear, use the
Control Panel to choose another color scheme
for the WIN-OS/2 desktop.

o Do not change mouse buttons from the WIN-OS/2
Control Panel if you are using WIN-OS/2 window
sessions. Change mouse buttons from the
Workplace Shell to change the WIN-OS/2 mouse
buttons in the WIN-OS/2 environment. The
WIN-OS/2 Control Panel can still be used for
changing mouse buttons in WIN-OS/2 full-screen

ON, wait until you see your WIN-OS/2 desktop
in a full-screen session before switching back
to the Workplace Shell desktop. If the
session does not start successfully, close it
then restart it.

o The value for VIDEO_SWITCH_NOTIFICATION should
not be changed for an active WIN-OS/2 session.

o Clipboard and DDE default to PRIVATE in
real-mode WIN-OS/2 sessions.

o If you install the USA (English) version of
OS/2 2.0, and you want to change the system
configuration to another country or language,
run Selective Install to make the changes
effective for PM. To make the changes
effective for WIN-OS/2, start WIN-OS/2 in
full-screen mode, open the Control Panel, and
use the international option to make your

o The EXPAND.EXE utility program for WIN-OS/2 is
located on OS/2 2.0 diskette 9. This program
is required to expand Windows device drivers
supplied by equipment manufacturers.


If your printer is connected to LPTx or LPTx.OS2,
be sure that the OS/2 spooler is active and the
Windows spooler is disabled. When the OS/2
spooler is active, Windows applications print jobs
from Windows applications spool directly to the
OS/2 spooler. Therefore, multiple print jobs can
be spooled asynchronously from the same WIN-OS/2
session or multiple WIN-OS/2 sessions. This does
not apply for printing to COMx devices, as there
is no spooling for COM devices.


OS/2 2.0 fully supports EGA and VGA. Because of
the highly graphical user interface provided by
the Workplace Shell, use of OS/2 2.0 in CGA mode
will be difficult and is not recommended.
Applications designed for CGA mode are supported
and can be run even when OS/2 2.0 is running in
EGA, VGA, or SVGA mode. Resolutions above VGA
(640x480x16 colors) are referred to as Super VGA
(SVGA). However, the implementation of SVGA
varies widely and requires different device
drivers for different resolutions, as well as
different adapters and systems. The OS/2
Installation program will correctly configure
Presentation Manager* and WIN-OS/2 drivers for
8514 and XGA. All SVGA adapters are supported in
VGA mode with the VGA driver provided with OS/2


The base video system and virtual display device
driver in OS/2 2.0 have been enabled for some of
the most popular SVGA chips and boards. This
support is required to switch between PM and DOS
or WIN-OS/2 applications. Because of the many
implementations and video modes, a limited number
of video boards have been tested.

The following Super VGA boards have been tested
and found to work with OS/2 2.0 for DOS
applications that make use of SVGA modes:

o Orchid ProDesigner IIs by Orchid Technology
(ISA and MCA versions)
o Trident TVGA by Trident Microsystems, Inc.
(8900b and c levels)
o STB PowerGraph VGA by STB Systems, Inc.
o Video Seven VRAM II, by Video Seven
o Boca Super VGA by Boca Research Inc.
o VGA Wonder XL Series by ATI Technologies, Inc.

The 8514 Ultra by ATI must be installed as an 8514
and as a primary display; it will default to
high-resolution mode. Do not install it as VGA.

Please contact the manufacturer of your PC or SVGA
video adapter to obtain device drivers and
installation instructions if you want to run
Windows or OS/2 applications in SVGA modes.
Information about SVGA support will be available
on CompuServe, the National Support Center
Bulletin Board System, the OS/2 Bulletin Board
System, as well as many video-board and system
manufacturers' bulletin boards.

We recommend you do NOT run the video-adapter test
utility programs in OS/2 2.0 unless the
manufacturer has explicitly verified that they run
in OS/2 2.0.

Some video adapters require that the computer's
DOS BIOS initialize the video adapter correctly.
If you have one of these adapters, screen text
might appear distorted in an OS/2 full-screen
command prompt. To remedy this, start a DOS
full-screen command prompt, type EXIT, and then
switch back to the OS/2 full-screen session; the
text should appear normal.

To automate this process, you can create a DOS
batch file to run when you start your computer.
Add the following statement to STARTUP.CMD:


Create the file, DOSFS.BAT, and place the
following statement in it:



If you have one of the above video adapters and
want to run DOS or Windows applications that make
use of SVGA, you must turn on OS/2 2.0 SVGA
support. The OS/2 Installation program detects
the type of video chip in the system; it cannot
detect the type of adapter or system board that
the video chip has been implemented on. You must
determine that you have a supported configuration,
and then explicitly enable SVGA.

To enable SVGA, type the following at an OS/2
command prompt or DOS full-screen command prompt:


Then restart the system.

When the Installation program detects a supported
SVGA video chip (other than 8514 or XGA), it will
add the following line to the CONFIG.SYS file:


Execution of SVGA ON creates the configuration
file, SVGADATA.PMI, in the \OS2 directory. This
file is used by VSVGA.SYS to save and restore the
correct video registers when switching between DOS
or Windows programs and Presentation Manager.
Failure to enable SVGA will cause display errors
when switching between applications that use SVGA.


1. Over time, more display adapters and PC
systems that offer SVGA, will be tested.
Refer to the bulletin boards mentioned
previously, or to the manufacturers for the
latest support information.

2. To make use of SVGA modes, you also must
install Windows and Presentation Manager video
display drivers.

3. If you experience display errors on an
SVGA-enabled system, try disabling SVGA
support by typing SVGA OFF at a command line.
This will delete the SVGADATA.PMI file. Then
restart your system.

4. In some SVGA displays, if you switch to the PM
desktop while the screen is still drawing, you
might experience display errors on the PM
desktop. Switch back to the SVGA screen,
allowing the drawing to complete, and then
switch back to the PM desktop.


In multiple XGA configurations, when you switch
from DOS to the PM desktop, your system will not
save and restore the hardware registers.

If your machine has an 8514 Ultra adapter and an
OS/2 2.0 supported SVGA adapter, you will need to
change the DEVICE= statement in your CONFIG.SYS
file from VVGA.SYS to VSVGA.SYS.


To change the color schemes for OS/2 system
windows and create a more readable display image,
change the Scheme Palette as follows:

1. Use your Reference Diskette or hardware Setup
program to set your hardware to VGA color, if
2. Open the System folder.
3. Select System Setup.
4. Select Scheme Palette.
5. Select the right-hand monochrome scheme.

This procedure will optimize the color scheme for
gray-scale usage, and also provide a good set of
colors for a VGA desktop presentation.


Several fonts have been enhanced in OS/2 2.0.
Some existing applications use inappropriate font
metrics to scale their text. In some cases, the
text becomes clipped because it no longer fits the
available space.


When running a full-screen WIN-OS/2 session with
an 8514 adapter in high resolution (8514.DRV
mode), do not switch away to a different session
while an application is updating the screen or
displaying the hourglass.

The following is a procedure for enabling WIN-OS/2
full-screen sessions to run in high-resolution
mode while the Workplace Shell Desktop and
WIN-OS/2 window sessions run in medium-resolution
(VGA) mode. The procedure assumes you are not
familiar with the SYSTEM.INI and WIN.INI files.

Follow the instructions very carefully.
Otherwise, you could cause your WIN-OS/2 sessions,
both window and full-screen, to become inoperable.

1. Install OS/2 for medium resolution VGA.

The next step requires you to make backup
copies of your SYSTEM.INI and WIN.INI files.
DO NOT SKIP THIS STEP. It is assumed that you
have a diskette or tape backup copy of your
system; instructions follow for a backup in
the directory only.

2. Back up the SYSTEM.INI and WIN.INI files.

Open an OS/2 Window from the Command Prompts
folder in the OS/2 System folder. At the
[C:\] prompt, type the following and press


Before making changes to the files, be sure
the desired high-resolution Windows device
drivers and fonts are loaded in the system.

3. Check the \os2\mdos\winos2\system directory
for the desired high-resolution display device
driver. In this example, the XGA.DRV device
driver is used. Checking this directory
reveals that this device driver is not loaded.
(The device driver might be loaded already, if
the system was installed in high-resolution
mode and then Selective Install was run to
return to VGA mode.)

For XGA, the diskettes need to be searched for
WINXGA and *G.FON. The following shows the
sequence of entries.


No XGA drivers were on this diskette, but one
of the font files was. Although the font file
is not in a bundle of files, it is still in
packed format and must be unpacked.

The files are packed with their standard
target directory coded into the packed file.
To copy the file to the system disk in the
proper directory, just run the Unpack utility


This procedure continues until all of the
scalable fonts are unpacked. These fonts are:


Eventually the WINXGA file is found by the
dir a:WINXGA search. It contains the WIN-OS/2
XGA.DRV and three XGA fonts.


With all of the required driver and font files
on the system disks, the next step is to
modify the SYSTEM.INI file.

4. Edit the SYSTEM.INI file and find the
following line:


5. This line specifies what device driver
WIN-OS/2 is to use in full-screen sessions.
Change this line to point to the
high-resolution device driver that was
unloaded in the steps above. In this example,
the device driver is XGA.DRV. The modified
line should look like the following:


Both SYSTEM.INI and WIN.INI have font entries
that must be changed. In SYSTEM.INI, these
entries are:


For XGA, these entries must be changed to:


In WIN.INI, the entries:

Symbol 8,10,12,14,18,24 (VGA res)=SYMBOLE.FON
Helv 8,10,12,14,18,24 (VGA res)=HELVE.FON
Tms Rmn 8,10,12,14,18,24 (VGA res)=TMSRE.FON
Courier 10,12,15 (VGA res)=COURE.FON

Must be changed to:

Symbol 8,10,12,14,18,24 (XGA res)=SYMBOLG.FON
Helv 8,10,12,14,18,24 (XGA res)=HELVG.FON
Tms Rmn 8,10,12,14,18,24 (XGA res)=TMSRG.FON
Courier 10,12,15 (XGA res)=COURG.FON

When these changes have been made and the INI
files saved, the system is ready for running
Windows applications in WIN-OS/2 window sessions
(VGA mode) and WIN-OS/2 full-screen sessions
(high-resolution mode).

For 8514 displays, you must delete the following
line from CONFIG.SYS:


For 8514 displays, the files to find are:

o WIN8514 (contains 8514.DRV, 8514SYS.FON,
8514OEM.FON, and 8514FIX.FON)


Windows developers should note that their
debuggers work in full-screen only. If you have a
dual-monitor setup (8514+VGA), install OS/2 2.0
for the 8514 as primary display with no secondary
display. This will allow your Turbo Debugger for
Windows (TDW) or CodeView for Windows (CVW)
session to run full-screen on the VGA display
while the WIN-OS/2 session runs full-screen on the
8514. For CVW, make sure to use the /8 option.
Quick C runs on the same display as WIN-OS/2. If
you use Quick-C, you don't need a special video

Installing OS/2 2.0 in this way will allow PM to
run on the 8514, and your full-screen debugger to
run on the VGA. It also will provide a "stereo"
effect for all full screen sessions; both the 8514
and VGA will show the same picture, unless a
full-screen application takes advantage of
video-specific features.



OS/2 2.0 is supported on personal computers with
an 80386 SX (or compatible) or higher processor,
with at least 4MB of memory and a 60MB hard disk
with 15MB to 30MB of free space.

IBM is currently testing personal-computer
manufacturers (PCM) systems for compatibility with
OS/2 2.0. The compatibility test verifies 18 key
functions of OS/2 2.0. Test results are based on
selected model configurations provided by the
manufacturers. While testing is continuing,
current compatibility information about tested
systems is available through your dealer or
Marketing Representative, as well as through the

o Prodigy (call the appropriate phone number for
your area, or Membership Service at (914)

o CompuServe (call the appropriate phone numbers
for your area, or Membership Service at

o IBM National Support Center Bulletin Board
System (NSC BBS). This service is available
24 hours a day, on a toll-call basis, with no
access charge, to anyone in the world who has
a modem, asynchronous-communication software,
and a switched telephone line. (The modem
should be set for 8 data bits, 1 stop bit, no
parity, and the standard transmission speed
from 1200 to 9600 baud.)

To access the NSC BBS, call (404) 835-6600.

o IBM Link. Eligible customers can obtain
installation and usage assistance through IBM
Link Question Support. To obtain information
about eligibility, contact your local Branch
Office or Marketing Representative.

NOTE: The compatibility test information is
provided for information purposes only.


Device support for the following Adaptec and
Future Domain SCSI adapters is shipped with OS/2
2.0. When any of the following adapters is
installed in a workstation, its presence is
normally detected automatically, and the
appropriate device support is subsequently
installed. For reference, the names of the device
drivers that support each adapter are provided

SCSI Adapter Device Driver
or Interface filename

Adaptec AIC 6260 AHA152X.ADD
Adaptec AHA 1510 AHA152X.ADD
Adaptec AHA 1520/1522 AHA152X.ADD
Adaptec AHA 1540/1542 AHA154X.ADD
Adaptec AHA 1640 AHA164X.ADD
Adaptec AHA 1740/1742/1744
(Standard mode operation) AHA154X.ADD
(Enhanced mode operation) AHA174X.ADD
Future Domain TMC-850/860/875/885 FD8XX.ADD
Future Domain TMC-1660/1670/1680 FD16-700.ADD
Future Domain MCS-600/700 FD16-700.ADD
Future Domain TMC-850IBM FD850IBM.ADD

The TMC-850/860/875/885 and TMC-850IBM adapters
will not be detected when the adapter's BIOS is
disabled. You can manually install this support
in your system by following the steps below.

NOTE: "xxxxxxxx.ADD" should be replaced with the
file name of the device-driver file you
want to install.

1. Locate Installation Diskette 8, which contains
the file, DASDDRVS.

2. Insert the diskette in drive A.

3. Change the current directory to the root
directory of the startup drive.

4. Type: UNPACK A:DASDDRVS \OS2 /N:xxxxxxxx.ADD

5. Add the following line to the CONFIG.SYS file:


6. Restart the system.


The device driver, SCSI.SYS, has been replaced by
OS2SCSI.SYS. OS2SCSI.SYS is provided in the \OS2
directory of the boot partition. Any CONFIG.SYS
entries of the form "DEVICE=SCSI.SYS" should be
replaced by the entry "BASEDEV=OS2SCSI.SYS."
Normally, this is done automatically.

The OS2SCSI.SYS device driver is required for a
number of SCSI CD-ROM devices, SCSI Read/Write
Optical devices, and SCSI Tape devices.


The SCSI CD-ROM support built into OS/2 2.0 has
some manufacturer-specific dependencies at this
time. Support has been verified for IBM and
Toshiba SCSI CD-ROM drives. Information about the
support and verification of additional
manufacturers' drives will be made available at a
later date.

SCSI Removable Media Support

Full function support is not yet available for
SCSI hard disk drives that support removable
media. Examples of this class of device include
the "Bernoulli" drives manufactured by IOMEGA, and
the removable-media drives manufactured by SyQuest

Although OS/2 2.0 recognizes these drives, it will
treat media as large diskettes. You will be able
to format for the FAT file system only. You will
not be able to partition or start up from the
media, and partitioned media will not be

If the IBMINT13.I13 driver is used to control
these units, the drive will be treated as a fixed
drive. In this case, the cartridge must be in the
drive at startup time, and you will need to use
the Shutdown procedure to remove the cartridge
from the drive.

SCSI Usage Notes

Following are a number of notes about usage, and
about potential compatibility problems with the
microcode levels on various adapters and devices.

Adapter: All Adaptec adapters
Note: SCSI hard disks must be configured as
SCSI target ID 0 or 1 to be able to
start up from that hard disk.

Adapter: Adaptec AHA-154x
Drive: IBM 0661 - 320MB SCSI
Note: Adapter BIOS will not recognize the
drive as Target 0 or 1 (Drives 80, 81).
For OS/2 2.0, the drive can be used as a
non-startup drive.

Adapter: Adaptec AHA-174x
Drive: IBM WDS-3180 - 80MB SCSI, IBM WDS-3160
- 160MB SCSI
Note: Adapter will not recognize these drives
when configured in 'STANDARD MODE'
(AHA-154x emulation). Instead, the
AHA-174x adapter should be configured in
'ENHANCED MODE'. This mode is supported
by the OS/2 2.0 drivers, and the problem
does not occur when the adapter is
operating in enhanced mode.

Adapter: Future Domain TMC-850/860/875/885 w/BIOS
revision level 7.0.
Future Domain TMC-1660/1670/1680 w/BIOS
revision level 2.0.
System: IBM Models 35 and 40 when the Future Domain
adapter is controlling the startup diskette.
Note: Will produce the message, "Disk read error
has occurred" when you attempt to start the
Installation diskette. Contact Future Domain
for a free BIOS upgrade.

AMI SCSI Adapters

AMI "Fast Disk" and AMI "Fast Disk II" SCSI
adapters are incorrectly recognized as Adaptec
adapters. If you have one of these adapters in
your system, do the following:

o At the final restart after the installation is
complete, delete from the CONFIG.SYS file, any
line with "BASEDEV=AHA1xxx.ADD" (where "x" can
be any character).
o Ensure the line, "BASEDEV=IBMINT13.I13,"
appears in the CONFIG.SYS file.


If you have a non-Micro Channel system with a
5-1/4" drive and its 3-1/2" drives all support
media sense, your 5-1/4" drive will format
diskettes at 720MB. Previously formatted 1.2MB
diskettes will read and write correctly. A fix
for this problem can be obtained from the
electronic bulletin board described in the
"Service and Support Information" section of this


When installing CD-ROM using "Selective Install",
do not install other options at the same time.


Terms denoted by a single asterisk in this file
(*) are trademarks of the IBM Corporation in the
United States and/or other countries. These terms

Operating System/2
Presentation Manager

Terms denoted by a double asterisk in this file
(**) are trademarks of other companies. Other
trademarks appearing in this file are owned by
their respective companies.

Microsoft, Microsoft Bookshelf, Microsoft Excel,
Microsoft Flight Simulator, Microsoft Money, and
Windows are trademarks of Microsoft Corporation.


Copyright IBM Corporation, 1992, all rights

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