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Mail Archives: djgpp/1996/01/26/17:39:04

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
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Message-ID: <Pine.SGI.3.91.960126175149.413F-100000@tower.york.ac.uk>
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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?

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