How To Force System Dump (NMI switch)

[Robert Ransbottom]

In article <124442 at linus.mitre.org> gwr at linus.mitre.org (Gordon W. Ross) writes:
>In article <2652 at dsacg3.dsac.dla.mil> of comp.unix.sysv386,
>ntm1569 at 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.
>
On ISC 386ix V.3.2 (2.0.2) with Operating System Messages and Kernel Debugging
built in, system phavl traps NMI's, hovers for a couple of secs, 
issues diagostics, and continues.
(I thought there was a bad tape drive, but seems cpio with -C714400 has been 
grabbing flaky ram.)