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OS/2 Shareware BBS: 36 Tips
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DIAMND.FAX
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1994-12-05
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Diamond Video Adapters 10/06/92
DIAMOND ADAPTERS
----------------
Diamond Speedstar Adapter
If video synch problems exist in an OS/2 full screen session or desktop
but go away temporarily after a DOS full screen session is entered, make
sure that you have executed SVGA ON from a DOS full screen session and
performed a shutdown. Prior to executin g this command, search for a file
\OS2\SVGDATA.PMI. If the file exists, delete it and regenerate it by
executing SVGA ON from a DOS command prompt. If you have a blurred strip
across the desktop or are experiencing other types of video synch
problems, y ou may try to regenerate the PMI configuration file by
deleting the old PMI file and running the DOS TSR VMODE utility and
selecting the highest resolution /refresh rate mode. in DOS full screen
session. After the mode was successfully set, exit the util ity and
execute SVGA ON and reboot. SVGDATA.PMI file contains the register
information for video modes supported by your adapter and is used by two
drivers: BSVHSVGA.DLL in OS/2 full screen and by VSVGA.SYS in DOS full
screen. Correct video driver stateme nts in the CONFIG.SYS for SVGA
support should be as follows: SET VIO_VGA=DEVICE(BVHVGA, BVHSVGA)
DEVICE=x:\OS2\MDOS\VSVGA.SYS where x is your OS/2 system drive letter.
If video goes out of synch when switching from DOS or WIN-OS2 session to
the desktop, check the ET4000 SVGA chipset on the video adapter and record
the batch number. If the batch is TC6059AF or higher, call the 800
support number back and reactivate you r call with a request to be queued
to OS2FIX queue. Ask for the fix for APAR PJ03677 to be mailed to you.
The fix contains an updated VSVGA.SYS driver.
If you have a blurred strip across the top of the desktop and have your
adapter set for the highest vertical refresh rate, try regenerating the
PMI file as explained above. It is important to run the VMODE utility and
select the highest refresh rate mode prior to running SVGA ON.
Recommended video BIOS revision for this adapter is 4.23. Contact Diamond
about the BIOS upgrade.
If you have intermittent video problems using DOS full screen session, set
DOS settings for that icon as follows: HW_ROM_TO_RAM to ON, DOS_RMSIZE to
624. Settings screen can be reached by clicking with the right mouse
button over the icon, selecting "Open settings" and going to the "Session"
page in the notebook.
Diamond Stealth adapter
This adapter is currently not supported in high resolution mode. This
however should not cause installation problems. After the installation is
completed, edit the CONFIG.SYS and change the video related statements
from SVGA to VGA (refer to the General c onsiderations section for the
outline of the VGA support). Recommended video BIOS revision is 2.32 for
this adapter. Contact Diamond about the BIOS upgrade.
Diamond Speedstar 24X Card Configuration
The following information is necessary for the proper configuration of the
Diamond Speedstar 24X card and the CTX 5648NI monitor. They are
incorrectly identified by the OS/2 installation process as an IBM 8514A
adapter and a SONY 1302 monitor. One of the following changes must be
made to the CONFIG.SYS:
SET VIO VGA=DEVICE(BVHVGA,BVHSVGA)
DEVICE=C:\OS2\MDOS\VSVGA (Super VGA set)
(assuming you have the IBM corrective service update of the file
"BVHSVGA.DLL" copied into the C:\OS2\DLL directory)
-OR-
SET VIO VGA=DEVICE(BVHVGA)
DEVICE=C:\OS2\MDOS\VVGA.SYS ( Standard VGA set)
(OS/2 2.0 will use standard VGA 640x480x16 mode for DOS, WIN/OS2, and OS/2
screens no matter which set you choose.)
Once you make one of the above corrections, there will still be a problem
with the WIN/OS2 screen being out of synchronization, off center, and
reduced in size. This problem can be corrected by running 24XMODE from a
DOS session. Choose "Custom" under monitor selection and use the highest
acceptable non-interlaced rate (60-70hz) for 640, 800, and 1024
resolutions; then save the configuration. Add the line "24XMODE MONITOR"
to the OS/2 AUTOEXEC.BAT. You must choose "Shutdown" from the workplace
Shell to save/reboot so that the changes may take affect. This assumes
that the Speedstar 24X utility " 24XMODE.COM" is loaded in the root
directory of the boot drive.
General considerations
Our PM desktop device driver supports only 640x480x16 mode (pure VGA).
SVGA support is intended to provide higher resolution modes for DOS and
VIO applications only! IBM is interested in helping video manufacturers
provide high resolution PM video support
Please contact Diamond Systems regarding the PM driver availability.
You can obtain more information on SVGA support from the README file ( in
INFORMATION folder) . Basic VGA OS/2 support statements in CONFIG.SYS VGA
should be as follows:
SET VIO_VGA=DEVICE(BVHVGA)
DEVICE=x:\OS2\MDOS\VVGA.SYS
where x is your OS/2 system drive letter.
If your desktop video is corrupted intermittently, run CHKDSK from an OS/2
command prompt to determine if any hard disk problems exist. If so, boot
OS/2 from the installation disk and press ESC when the first instruction
screen is displayed (you'll see this screen shortly after disk 1 has been
inserted). This will return you to an OS/2 A: command prompt. Run
CHKDSK C: /F to repair any inconsistencies on your drive. Replace C:
with your boot drive letter if yours is different.
Using HPFS on systems with less than 6MB RAM sometimes causes problems
that seem to be video related but are not (blank screen, missing icons,
etc...). You may want to consider a FAT file system for your hard drive
if you experience problems.
You should also check your motherboard BIOS date to determine if you will
need an update. AMI BIOS should be dated no earlier than 4/9/90 although
we recommend using AMI BIOS dated 5/9/91 or later. Phoenix BIOS should be
dated no earlier than 5/11/92 ( they recently corrected a bug that was
causing problems with OS/2).
If your DOS application is using a video mode which is not supported by
our DOS full screen drivers, you may install all DOS video related drivers
and mode utilities in OS/2 CONFIG.SYS and AUTOEXEC.BAT. You may also
specify DOS video driver DEVICE stateme nt in DOS_DEVICE setting in the
DOS SETTINGS for the desired DOS session.
Important numbers
AMI BIOS update: Washburn and Co. 1-800-836-8026
Phoenix BIOS update: 1-405-321-8333
Diamond Computer Systems, Inc:1-408-736-2000
12/31/99