X-Authentication-Warning:	delorie.com: mail set sender to djgpp-bounces using -f
From:	jbs30000 AT aol DOT com (Joel)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Interrupt handler question
Date:	11 Apr 2004 18:52:35 -0700
Organization:	http://groups.google.com
Lines:	15
Message-ID:	<84e4e2a9.0404111752.97a3a9f@posting.google.com>
References:	<84e4e2a9 DOT 0404102155 DOT 6533748 AT posting DOT google DOT com> <c5be5c$phh$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE>
NNTP-Posting-Host:	172.140.242.173
X-Trace:	posting.google.com 1081734755 12670 127.0.0.1 (12 Apr 2004 01:52:35 GMT)
X-Complaints-To:	groups-abuse AT google DOT com
NNTP-Posting-Date:	Mon, 12 Apr 2004 01:52:35 +0000 (UTC)
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de> wrote in message news:<c5be5c$phh$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE>...
> Joel <jbs30000 AT aol DOT com> wrote:
> > Anyway, is it possible to call the old routine stored with
> > _go32_dpmi_get_real_mode_interrupt_vector while in the middle of the
> > new routine?
> 
> I doubt it.  The problem being that the end of an interrupt handler is
> signalled by a IRET instruction.  The old routine will be ending in
> such an IRET.  So at the minimum, you'ld have to use the DPMI simulate
> interrupt call method to call it, and I'm not sure that's allowed from
> inside an interrupt handler.

Nevermind my second question.  If found the code at
http://www.delorie.com/djgpp/doc/dpmi/ch4.6.html
It's all in asm, but I can figure it out just fine.  Thanks.

- Raw text -