From: "Richard Mitton" <richard AT farout DOT demon DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro Problems
Date: Sun, 07 Sep 1997 13:15:42 GMT
Organization: 3 Amis Avenue
Message-ID: <01bcbb90$b269e3a0$7734989e@farout.farout.demon.co.uk>
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To: djgpp AT delorie DOT com
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>   set_gfx_mode(GFX_VGA, 320, 200, 1024, 1024);

Using GFX_VGA forces Allegro to use mode 13h, which doesn't support
hardware scrolling (I think). Try using GFX_MODEX, GFX_VESA1, or
GFX_VESA2L, which should support it. Look in the Allegro docs for the
correct modes you can use.

Richard Mitton,
richard AT farout DOT demon DOT co DOT uk