Known problems and workarounds.

*   A good starting place for troubleshooting is to make a plain DOS bootable
    floppy (format a: /u /s), and boot with this. If VPIC now works OK, then one
    of your TSR's (mouse, print screen, memory manager, etc) is probably inter-
    fering. Rem out all the TSR's in autoexec.bat and config.sys, and then start
    puting them back (remove the rem's) one at a time until you find the culprit.
    Your video board may also have a VESA TSR you have to run (to enable VESA
    info) before running VPIC. If this is the case, you probably want to run this
    program in AUTOEXEC.BAT.

*   For OS/2 users, set your DOS session to 'Full Screen' and all video
    selections to ON except for 'fastpaste'.

*   VESA boards. If you have a board which support VESA, but doesn't seem to
    work correctly (all modes not there) it may be your memory manager which
    is confusing VESA. Make a system floppy as above and boot from the floppy in
    drive A and then try to run VPIC. If it now works correctly, it's probably
    your memory manager. You should exclude the regions from B000-BFFF (if you
    run windows) and C000-CFFF (video BIOS). You may also have to disable
    Stealth mode if you are using it. Some cards didn't implement VESA correctly
    (older S3 cards and others don't return the correct info when interrogated),
    so for these you can configure with the VESA config file, and do 'vpic /v'.
    See below about S3 and Tseng VESA implementation.

*   Trident TVGA 8900c VESA says it can do 640x480 and 800x600 in 64K colors
    without a Sierra DAC. Use Alt C from menu and select 1 (256 colors) for
    proper Targa viewing. Also, you can configure with the TRID8900 config file
    and do 'vpic /v' from DOS to ignore VESA.

*   Older S3 boards (Orchid Fahrenheit 1280 and Diamond Stealth) return wrong
    bytes/line and mode attributes. Use 'vpic /v' to call VPIC.

*   All ATI boards: ATI will not enable the 800x600 mode unless you pick a
    monitor in their SETUP program that is capable of doing the 800x600 mode.
    I had to use a custom configuratoin to get the 800x600 mode to work.

*   ATI Ultra/8514: You have to run ATI's HDILOAD TSR program to enable the
    8514A interface once before running VPIC.

*   ATI Ultra Pro supports VESA in all but the hi_color modes. Since ATI doesn't
    support them thru VESA, VPIC doesn't support them.

*   The Diamond Viper comes with a TSR program (vprmode) which makes the board
    emulate VESA, and must be run before running VPIC. Run 'vprmode vesa' either
    in your AUTOEXEC.BAT file, or before running VPIC. The Viper also does not
    make a vertical sync (per the IBM spec), so 'animate' while viewing doesn't
    work.

*   The IBM ThinkPad 700c has a VESA.COM TSR program you must run once to enable
    VESA before running VPIC.

*   The Matrox boards come with a TSR program called MGAVESA.COM which makes the
    Matrox look like a VESA board. You should run this before running VPIC.

*   The Tseng VESA 1.2 seems to have a problem reading data from the screen.
    Configure for the TS4000 (comes this way), TS4000HI or the GENO7900 if you
    have hi-color, and do 'vpic /v' to make VPIC not use VESA. Symptoms are
    smearing of the mouse and pictures convert wrong.

*   Newer S3 boards say they are VESA ver 1.2, but are really VESA ver 1.1.
    S3 is correcting for new BIOS (4-93). Workaround: Use S3NEW.CFG and edit to
    conform to the modes your card will do. Then, configure VPIC with the S3
    config file and do 'vpic /v'. This applies to the following (and probably
    more) cards:
         Card                                 Chip
         ===========================================
         Actix Graphics Engine 32 Plus        86C801
         Diamond Stealth 24                   86C801 (805 for VLB)
         Focus 2 the Max True Speed           86C801
         Genoa WindowsVGA 24+                 86C801
         Metheus Premier 801                  86C801
         Mirage Storm 1280/256                86C801
         Nth S3 Advantage                     86C801
         NDI Volante Warp10                   86C801
         Orchid Farenheit VA                  86C801
         STB PowerGraph X-24                  86C911
         Video Seven WinPro                   86C801

         Cache Computers Lynx VGA Model 336   86C911
         Cardinal VGA 900 HiColor Win Accel.  86C911
         Diamond Stealth                      86C911
         Focus 2 the Max VGA GUI 6000         86C911
         IOcomm Michaelangelo VRAM            86C911
         Matrox Impression 1024               86C911
         Mylex GL1911                         86C911
         Orchid Farenheit 1280 Win Gr Accel   86C911
         Orchid Farenheit 1280                86C911
         Portacom Eclipse II                  86C911
         Presenta Graphics Accel VGA          86C911A
         STB Wind/X HC GUI Accel              86C911

         Actix Graphics Engine 1280           86C924
         Advanced Integration Research Aview 2  86C924
         Advanced Integration Research Aview 2E 86C924
         Artist Graphics WinSprint 100+       86C924
         Colorgraphic Twin Turbo Accelerator  86C924
         Edge V24 BitBlaster                  86C924
         Linwen/Giantec GXA                   86C924
         Matrox HiPer VGA                     86C924
         Metheus Premier 1280NI               86C924
         NDI Volante AT600 Plus               86C924
         PCG Photon 70/70 Deluxe              86C924
         Quickpath Cyclone XGi                86C924
         Sigma Designs Legend GX              86C924
         SixGraph Wizard 924                  86C924

         Actix Graphics Engine Ultra          86C928
         Artist Graphics WinSprint 900 Lite   86C928
         Diamond Stealth Pro                  86C928
         ELSA Winner 1000                     86C928
         Metheus Premier 928-4M               86C928
         Number Nine #9GXE                    86C928
