From:	Shawn Hargreaves <Shawn AT talula DOT demon DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: UniVBE && low resolutions
Date:	Thu, 30 Jan 1997 20:14:50 +0000
Organization:	None
Distribution:	world
Message-ID:	<buvlcMA6EQ8yEwQY@talula.demon.co.uk>
References:	<5coj83$1if AT dailyplanet DOT wam DOT umd DOT edu>
NNTP-Posting-Host:	talula.demon.co.uk
MIME-Version:	1.0
Lines:	18
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

James Jeffrey Benjamin writes:
>I know UniVBE is capable of lower resolutions but I can't get Allegro to
>recognize it. Using the VESA2L driver to try to set anything less than
>640x480 results in a page fault. Is the current Allegro not capable yet?

Is this with the test.exe program, or your own code?

Allegro should support whatever modes the VESA driver provides, as it
queries VESA to get a list of the available resolutions. UniVBE's lowres
modes work fine on my ET4000. Try running SciTech's VBETEST utility:
that will tell you whether the problem lies with Allegro or UniVBE. It
might also be worth trying these resolutions in banked mode (with
Allegro's GFX_VESA2B driver).

/*
 *  Shawn Hargreaves - shawn AT talula DOT demon DOT co DOT uk - http://www.talula.demon.co.uk/
 *  Ghoti: 'gh' as in 'enough', 'o' as in 'women', and 'ti' as in 'nation'.
 */

- Raw text -