From:	pmo AT fmsc DOT com DOT au (Peter Monks)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Allegro & X-MODE display limits!!
Date:	Mon, 09 Dec 1996 03:45:11 GMT
Organization:	Financial Market Software Consultants pty ltd
Lines:	26
Message-ID:	<32ab89db.19573170@news>
References:	<19961204204800 DOT PAA08289 AT ladder01 DOT news DOT aol DOT com>
NNTP-Posting-Host:	gw.fmsc.com.au
Cache-Post-Path:	clark.fmsc.com.au!unknown AT sleepy DOT fmsc DOT com DOT au
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On 4 Dec 1996 20:47:07 GMT, isjolly AT aol DOT com wrote:
>Hi there,
>             Does anybody know how to extend the 256K limit on Video
>memory
>within Allegro. I wish to create a eight way scroller & also use video mem
>for
>background restore, logical & physical screens etc...

You can't without resorting to video card specific machinations, since
mode-X uses the standard IBM VGA, which can only contain up to 256K of
VRAM.

If you want low-res with large amounts of memory, have a look at
UniVBE's low-res VESA modes (which Allegro does directly support).
Unfortunately, most other VESA implementations don't support these
lower resolutions, so you're either stuck with Mode-X with only 256K
of memory, or totally reliant on UniVBE.

Good luck!
Peter


----------------------------------------------------------------------
Peter Monks                                            pmo AT fmsc DOT com DOT au
                                    Peter_Monks AT australia DOT notes DOT pw DOT com
                               http://www.geocities.com/Yosemite/4455/

- Raw text -