Path: utzoo!attcan!uunet!decwrl!ucbvax!agate!linus!linus!gwr
From: gwr@linus.mitre.org (Gordon W. Ross)
Newsgroups: comp.unix.sysv386
Subject: Re: How To Force System Dump (NMI switch)
Message-ID: <124442@linus.mitre.org>
Date: 25 Oct 90 19:05:32 GMT
References: <2652@dsacg3.dsac.dla.mil>
Reply-To: gwr@linus.mitre.org (Gordon W. Ross)
Organization: The MITRE Corporation, Bedford, MA.
Lines: 17

In article <2652@dsacg3.dsac.dla.mil> of comp.unix.sysv386,
ntm1569@dsacg3.dsac.dla.mil (Jeff Roth) asks:

> [...] "is there any way to force a system coredump if a machine is hung?"

Yes.  If you have an NMI (Non-Maskable Interrupt) switch on your
machine, pressing it will cause a panic and system dump.

If you don't have such a switch it is trivial to add one.  You need a
switch between the NMI line and ground.  The NMI line is available on
every I/O channel slot, pin 2 (that's from memory -- look it up!)
As always, don't blame me if you fry your mother board...
-- 
Gordon W. Ross  (M/S E095)	internet: gwr@linus.mitre.org
The MITRE Corporation    	uucp: {decvax|philabs}!linus!gwr
Burlington Road          	office phone: 617-271-3205
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