Sun-4/280 won't boot with bad video RAM

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Article #10464

#10464

From: Mark Costlow
Date: Sat, 21 Jan 1989 05:09

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Greetings.  I've got a Sun-4/260 with a problem.  It seems to have some
bad video RAM.  This SHOULDN'T be a problem for me, since we use this
machine with a dumb terminal for a front end, and have no interest in
whether the video RAM works or not.  Alas, the machine refuses to boot
while its video RAM is sick, so here I am.  What I need are answers to the
following:

Is there any way that I can completely disable the vid RAM so that the
machine will boot anyway?

Or, failing that,

Has anyone got any idea where the video RAM is physically located on CPU
board?  My boss is tired of paying out the yazoo to fix almost-new sun
equipment all the time (this one's only six months old), so we wanna fix
this one ourselves if we can.  If anyone could sketch me a map, I'd be
grateful.

We would be most appreciative of any help!  Thanks.

Mark Costlow
System Bozo at large
EDS R&D

...texsun!xochtil!cheeks

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!ucbvax!decwrl!purdue!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: xochitl!cheeks%Central@sun.com (Mark Costlow)
Newsgroups: comp.sys.sun
Subject: Sun-4/280 won't boot with bad video RAM
Message-ID: <8901161923.AA16194@xochitl.uucp>
Date: 21 Jan 89 05:09:39 GMT
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Original-Date: Mon, 16 Jan 89 12:23:04 MST
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