Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!rice!uw-beaver!ubc-cs!mprgate.mpr.ca!breckenr
From: breckenr@mpr.ca (Dennis Breckenridge)
Newsgroups: comp.unix.sysv386
Subject: Re: FATAL: Parity error on add-on card. What does it mean ? (ISC 2.2)
Keywords: parity errors
Message-ID: <1991May24.170934.13027@mprgate.mpr.ca>
Date: 24 May 91 17:09:34 GMT
References: <818@isbank.is>
Sender: news@mprgate.mpr.ca
Organization: MPR Teltech Ltd., Burnaby, B.C., Canada
Lines: 32

In article <818@isbank.is> stb@isbank.is (Steintor Bjarnason) writes:
>My computer (Tandon 386/33, 8MB memory, Adaptec 1542 scsi controller) has
>been crashing a lot lately with the error message :
>  FATAL: Parity error on an add-on card.
>  PANIC: Parity error address unknown.
>
>Also when I have used shutdown to stop ISC then it has crashed with a :
>   PANIC: Kernel mode trap.  Type 0x0000000E
>
There are a number of things to try to locate the error. The first
place I would look is in the main system memory. If you have a way
of disabling the parity bit hardware, do that. Try heating the memory
with a heat gun or lamp. 

Strip the system down to it's bare components, run with dis only for 
a while, then add youer network cards one at a time. You may have 
a race condition that is caused by a bus timing problem. It did not
show up right due to new component toleraces. Heat and time changed
the tolerances. 

ISC panic 0000000E is a catch all panic, if the machine does not 
know why it panic'ed it falls into a routine that dumps it. You 
are better off trying this under MESSY_DOS. 

Hope this helps


-- 
Dennis S. Breckenridge  |
MPR Teltech Ltd         | Email:     breckenr@mpr.ca
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