Xref:	news2.mv.net comp.os.msdos.djgpp:598 rec.games.programmer:40479
From:	Shawn Hargreaves <slh100 AT york DOT ac DOT uk>
Newsgroups:	comp.os.msdos.djgpp,rec.games.programmer
Subject:	Re: vsync handler in digpp v2
Date:	Fri, 26 Jan 1996 17:55:02 +0000
Organization:	The University of York, UK
Lines:	20
Message-ID:	<Pine.SGI.3.91.960126175149.413F-100000@tower.york.ac.uk>
References:	<4e2ci8$8be AT news DOT be DOT innet DOT net>
NNTP-Posting-Host:	tower.york.ac.uk
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On 23 Jan 1996, Biesmans Dominique wrote:

> I want to try to write a vsync handler using djgpp v2.4 beta. Has anyone 
> allready done any attempts in that direction? I'm also looking for 
> examples of interupt handlers in djgpp v2 in general.

How are you trying to do this? Using the actual VGA retrace interrupt 
(which doesn't exist on a lot of cards), or by fiddling with the timer 
interrupt? I tried to write one a couple of months ago, using the timer, 
and ran into all sorts of problems. I got it working 90% of the time, but 
it conflicted with any VESA calls I made, and also screwed up when I 
tried to access the disk. I still haven't figured out why :-)

I have some examples of regular timer, mouse, and keyboard interrupts, if 
you want to take a look at those.


Shawn Hargreaves                        If God is omnipotent, can he make a
http://www.york.ac.uk/~slh100/          rock so heavy that he cannot lift it?

- Raw text -