From:	"Matt Barker" <matt DOT b AT clear DOT net DOT nz>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Timer interrupt
Date:	4 Jul 1998 20:51:43 GMT
Organization:	CLEAR Net, http://www.clear.net.nz/
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Message-ID:	<01bda78d$23b78920$433461cb@spock>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

> I don't know the answer to your question, but I have answers to
> questions you didn't ask:
> 
> OldTimerHandler() sends an EOI on its own, so you shouldn't do it in
> your handler when you call OldTimerHandler(). And IIRC you shouldn't
> call Int 1C manually, because that's done by OldTimerHandler() as well -
> and I guess you set Factor so that OldTimerHandler() is called just as
> often as it is normally called.

Won't OldTimerHandler() end with an iret instruction though, in which case
it will not return to my handler???  It certainly seemed to work OK.

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