[999] in netbsd-help mailing list archive
NMI Trap
daemon@ATHENA.MIT.EDU (pocky@MIT.EDU)
Tue Aug 13 03:50:53 1996
From: pocky@MIT.EDU
To: netbsd-help@MIT.EDU
Date: Tue, 13 Aug 1996 03:46:31 EDT
Hi. I'm having really ugly problems.
My NetBSD machine was working just fine all year, until at the beginning of the
summer, I stuck a couple of PS/2 simms in it and it never worked right again.
The thing beeped at me, and I removed the simms and reinstalled my old ones.
But the first thing I noticed was that after that, when I rebooted to netbsd,
it told me:
NMI trap, dumping to debugger
Rebooting...
and thus got stuck rebooting itself.
I was having problems in DOS, too, with devicehigh commands. I figured out the
memory controller had to be scraugt. (I knew it wasn't the memory itself,
because I tried different memory and got the same errors.) So I installed a
new motherboard. I eventually had to punt that because of keyboard bios
problems.
So here I am, with a new motherboard. (The third one yet.) DOS works
perfectly with it. (But it's DOS. :p) But NetBSD still reboots itself
from that damned NMI trap. It happens after it probes for ie0 or le0 or
something. (Everything goes by very fast, so I can't be totally sure.)
The install kernel from the install disk works fine. But when booting off
my hard disk, I fall into a Non-Maskable Interrupt Trap.
My new BIOS has a "boot-sector virus warning" feature. So I enabled it.
It complains of a "possible boot sector virus" whenever I try installing
OS-BS. A friend of mine thought a virus could be causing the NMI errors,
so I reformatted my hard drive from within the bios (it was complaining
of possible boot sector viruses when I reformatted it) and didn't bother
installing DOS or a boot loader or anything. Just NetBSD, on the full
516mb of the drive. But I still get an NMI error.
I've removed all extraneous ISA cards and tried various IRQ settings,
but still the same error. I've started the Linux install (Red Hat) and
it complains of an NMI error but goes on.
(It says "NMI error. Uhhuh. Dazed and confused, but trying to continue.)
I haven't done a full install of Linux on this machine, so I don't know
how it would have reacted beyond the install disk.
Does anybody have any ideas at all? I'm really confused and I don't know
what to do. Any help you could offer would be greatly appreciated. I've
been spending way too much time on this already.
Thanks,
Dan
