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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> 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.