From: jerry@jvdsys.nextjk.stuyts.nl (Jerry van Dijk)
Subject: Re: IRQs and interrupt handlers
Date: 1998/05/24
Date: 1998-05-24T00:00:00+00:00 [thread overview]
Message-ID: <EtFppu.4o@jvdsys.nextjk.stuyts.nl> (raw)
In-Reply-To: 35662efc.38593625@SantaClara01.news.InterNex.Net
Tom Moran (tmoran@bix.com) wrote:
: Why can't he make an ISR with Gnat? Is it missing machine operations?
: Can't he link to MASM code? I have an old DOS program that does its
: own com port interrupts that runs in a DOS box under Win95 (much of
: the time). Reliability and interrupt latency of course may be a
: problem...
Yes, but you are talking _DOS_ code now, running under WinXX, not
Windows code.
Reliability is always an issue in such cases, since it will require
both a 32-bit protected mode _and_ a 16-bit real mode handler to
circumvent the interrupt deflection problem.
Jerry.
--
-- Jerry van Dijk | email: jdijk@acm.org
-- Leiden, Holland | member Team-Ada
next prev parent reply other threads:[~1998-05-24 0:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-05-20 0:00 IRQs and interrupt handlers under Win95 Dale Keim
1998-05-20 0:00 ` Markus Kuhn
1998-05-21 0:00 ` Michael F Brenner
1998-05-21 0:00 ` The nature of operating systems - was: IRQs and interrupt handlers Larry Kilgallen
1998-05-22 0:00 ` Chris Sparks (aka Mr. Ada)
1998-05-22 0:00 ` Jerry van Dijk
1998-05-23 0:00 ` falis
1998-05-24 0:00 ` Jerry van Dijk
1998-05-22 0:00 ` Larry Kilgallen
1998-05-23 0:00 ` Tom Moran
1998-05-24 0:00 ` Jerry van Dijk [this message]
1998-05-23 0:00 ` Robert Dewar
1998-05-21 0:00 ` IRQs and interrupt handlers under Win95 Robert Dewar
1998-05-21 0:00 ` Robert Dewar
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox