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From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Video modes under Windoze XP
Date:	10 May 2002 14:13:32 GMT
Organization:	Aachen University of Technology (RWTH)
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Neo 1061 <invalid AT erehwon DOT invalid> wrote:
> Exactly what video modes should an Allegro app be able to get under Windoze 
> XP, running as a console app?

I'm not a big Allegro user, but my guess would be: whatever your
hardware drivers support *for a DOS application*.  I.e. the crucial
piece is the VESA Video BIOS Extension (VBE) support of your graphics
card, and how much of it is made accessible by its drivers.  This area
of driver support tends to be quite crappy these days, but you may
have pulled a lucky lot.

> I had, from the horror stories, expected to be limited to ancient
> VGA modes, but I was able to get 1024x768x256 also. However, not
> 400x300x24bpp or 1024x768x24bpp. Apparently truecolor modes are
> unavailable, but that's it.

Truecolor may still be available in the shape of 32bpp modes --- 24bpp
is just too much of a hassle these days, given that all the modern
cards have much more memory on board than even 2000x2000x32bpp could
ever use.

-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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