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From: Esa A E Peuha <esa DOT peuha AT helsinki DOT fi>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Strange VESA problem
Date: 27 Sep 2004 10:59:33 +0300
Organization: University of Helsinki
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Andrew Cottrell <andspamtrap aty exemail doty com doty au> writes:

> XP and DOS.WIN 9x do and will function differently for Vesa calls. I
> have found that Vesa under 2000/XP do not support the tripple buffer
> modes and a few or the higher resolutions. This in on the sam PC
> booting XP and then DOS 6.22 for a comparision.
> 
> I have no idea why or what causes the differences.

I think XP won't let a DOS program execute code from the video card's
BIOS, so the VESA calls will have to be emulated by the XP video driver,
and DOS support probably wasn't very high priority in writing that.
Alternative drivers might do better.

-- 
Esa Peuha
student of mathematics at the University of Helsinki
http://www.helsinki.fi/~peuha/