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Date:      Mon, 12 Jun 1995 07:52:21 -0400 (EDT)
From:      Peter Dufault <dufault@hda.com>
To:        rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes)
Cc:        gibbs@freefall.cdrom.com, evanc@synapse.net, hackers@freebsd.org
Subject:   Re: Problem with 2940
Message-ID:  <199506121152.HAA26421@hda.com>
In-Reply-To: <199506120055.RAA01675@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Jun 11, 95 05:55:18 pm

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Rodney W. Grimes writes:
> 
> 
> Or display hardware that is adding a bit to the character, or main
> memory (do you have 36 bit simms and a chip set that does memory
> parity creation and checking)?  I find that it is very hard to believe
> you even got far enough to get the system booted if the data was really
> this way in memory or on disk, all your binaries should be corrupt.
> 
> This also tends to rule out the cache, as your binaries should be blowing
> chunks all over the place (or maybe they are and you failed to mention
> that).
> 
> I am really really suspecting display hardware here, can you telnet in
> and see if the files look fine over a telnet connection????
> 
> Do cksums on the files match those from a good system??
> 

I'm also surprised that he managed to post that message yet sees
this type of failure in the text files.

Recall that he says that if he re-extracts the files and they come
out OK they stay OK.  The failure is consistent with a given file.
That seems to eliminate anything outside of the disk-memory-disk
loop.

-- 
Peter Dufault               Real Time Machine Control and Simulation
HD Associates, Inc.         Voice: 508 433 6936
dufault@hda.com             Fax:   508 433 5267



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