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De: Allan Kugel [SMTP:kugel@ruccs.rutgers.edu]

I am trying to port some grx programs to a new windows XP system, compiling with djgpp. I'm using the version of GRX that is on the djgpp site, namely 2.4.3. The test program comes up, but things don't look right; there's a squished rose, and the demo programs kick out without any visible action. Offhand, I suspect that the graphics mode is not right. (some recompiled grx programs run with some of the expected display off the screen, and circles flattened).

Before I try to spend serious time tracking this down, does anybody out there have experience running grx on windows XP? Any quick suggestions?

Mmm.. I supose you want to use the GRX DOS version, no the Win32 one, correct?. I think WinNT and XP doesn't permit DOS programs use the video card directly, only the limited VGA functionallity. What modes the "modetest" program found if you set "GRX20DRV=VESA"?.

1) 320x200 2 colors 2) 640x200 2 colors 3) 640x350 2 colors 4) 640x480 2 colors 5) 320x200 16 colors 6) 640x200 16 colors 7) 640x350 16 colors 8) 640x480 16 colors 9) 320x200 256 colors 10) 320x240 256 colors 11) 320x400 256 colors 12) 320x480 256 colors

(unfortunately, not 640x480 256 colors)

I don't know if there's any way of running native dos mode anymore (although I suppose one could boot from floppy?)

Allan Kugel e-mail: kugel@ruccs.rutgers.edu 26 Handy street voice: 1-732-247-3079 New Brunswick, NJ 08901-2821 fax: 1-732-445-6715 @ RU cognitive science U.S.A. lab: 1-732-445-6163 (Visual Attention lab)