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>
References:	<3411E944 DOT 52E6 AT voyageur DOT ca>
NNTP-Posting-Host:	farout.demon.co.uk
Lines:	9
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

>   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

- Raw text -