From:	wroberts AT aug DOT com
Date:	Fri, 26 Jan 1996 23:39:12 -0500
To:	djgpp AT delorie DOT com
Subject:	Re: vsync handler in digpp v2

>To: Shawn Hargreaves <slh100 AT york DOT ac DOT uk>
>From: wroberts AT aug DOT com
>Subject: Re: vsync handler in digpp v2
>
>At 05:55 PM 1/26/96 +0000, you wrote:
>>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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