Instructions on how to manually install display drivers.  Downloaded
from the OS/2 Shareware BBS, tel. 703-385-0931.

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I beat the guys up and got the MANUAL way to change display type WITHOUT
needing to install, here tis....

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In all cases below, you must have diskettes 6-15 (diskettes installed
under PM - may be different depending on driver level).  When the
instructions say: 'UNPACK A:filename targetdrive:', this implies that
this command is run against each of the diskettes as the file may reside
on any or all of the diskettes.

For CGA:
        1. UNPACK A:CGA targetdrive:
        2. copy (or rename) the file \OS2\DLL\CGA.DLL to \OS2\DLL\DISPLAY.DLL
        3. change the CONFIG.SYS
           SET VIDEO_DEVICES=VIO_CGA
           SET VIO_CGA=DEVICE(BVHCGA)
           remove any reference to DEVINFO=KDB,xxx,xxxxx

For EGA:
        1. UNPACK A:EGA targetdrive:
        2. copy (or rename) the file \OS2\DLL\EGA.DLL to \OS2\DLL\DISPLAY.DLL
        3. change the CONFIG.SYS
           SET VIDEO_DEVICES=VIO_EGA
           SET VIO_EGA=DEVICE(BVHEGA)
           DEVINFO=KDB,EGA,xxxxx

For VGA:
        1. UNPACK A:VGA targetdrive:
        2. copy (or rename) the file \OS2\DLL\VGA.DLL to \OS2\DLL\DISPLAY.DLL
        3. change the CONFIG.SYS
           SET VIDEO_DEVICES=VIO_VGA
           SET VIO_VGA=DEVICE(BVHVGA)
           DEVINFO=KDB,VGA,xxxxx

For 8514:
        1. UNPACK A:8514 targetdrive:
        2. copy (or rename) the file \OS2\DLL\8514.DLL to \OS2\DLL\DISPLAY.DLL
        3. change the CONFIG.SYS
           SET VIDEO_DEVICES=VIO_8514
           SET VIO_8514=DEVICE(BVHVGA,BVH8514)
           DEVINFO=KDB,BGA,xxxxx

For XGA:
        1. UNPACK A:XGA targetdrive:
        2. copy (or rename) the file \OS2\DLL\XGA.DLL to \OS2\DLL\DISPLAY.DLL
        3. change the CONFIG.SYS
           SET VIDEO_DEVICES=VIO_XGA
           SET VIO_XGA=DEVICE(BVHVGA,BVHXGA)
           DEVICE=targetdrive:\OS2\XGARING0.SYS
           DEVINFO=KDB,VGA,xxxxx

Where xxxxx = targetdrive:\OS2\VIOTBL.DCP

This does not cover dual display systems, those get somewhat more involved.

This also does not cover changing the OS2.INI file, but since these are
changes to colors and must be done programmatically, it is not usually
worth the effort.
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Irv Spalten  BPC Technical Interface Group, Boca Raton FL