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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.sys.apple2
Subject: Re: an Idle Apple...
Message-ID: <14416@smoke.brl.mil>
Date: 10 Nov 90 06:05:39 GMT
References: <*D$^=0+@rpi.edu> <1990Nov9.195818.26230@helios.physics.utoronto.ca>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 8

In article <1990Nov9.195818.26230@helios.physics.utoronto.ca> neufeld@physics.utoronto.ca (Christopher Neufeld) writes:
>suddenly it showed seven chips bad out of eight ...

That's too much of a coincidence to be acausal.  There are several causes
I could imagine, among them static discharge damage from previous handling
of the chips, or a defective memory addressing support chip external to
the RAM itself (one of 8 permutations of three bits would be matched by
a "stuck" chip controlling those chips).