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From: bgeer@javelin.es.com (Bob Geer)
Newsgroups: comp.sys.ibm.pc.misc,comp.misc
Subject: Re: Help! Memory Parity Problem!!
Message-ID: <1990Dec21.014724.6974@javelin.es.com>
Date: 21 Dec 90 01:47:24 GMT
References: <1990Dec20.185019.29981@portia.Stanford.EDU>
Reply-To: bgeer%javelin@dsd.es.com
Organization: Evans & Sutherland Computer Corp., Salt Lake City, Utah
Lines: 38

shedevil@portia.Stanford.EDU (Annie) writes:
>...
>"Memory Parity Failure"
>...

Sounds like a marginal memory chip.  There are probably programs out
there that can pinpoint just which chip it is -- I don't have one
myself, unfortunately, to suggest.  The amount of memory detected on
startup is probably a clue.  Individual memory 64k, 256k, or 1meg
chips are reasonably priced, but you don't want to have to buy a whole
flock of them.  Have you a friend in a computer service department?

Replacing individual memory chips is straightforward -- carefully lift
the old chip out of it's socket, push the new one in.  Lifting out
takes patience, as often sockets stubbornly release their contents, so
use a special chip lifting tool; a small screwdriver slid under the
chip & rotated rather than pried mostly works fine.  When inserting a
chip, make REAL sure the legs line up with the socket receptacles -- a
bent leg nullifies the whole procedure.  Also, chips have a small dent
in one end -- make sure to line it up as all the rest are.  Plugging
it in backwards doesn't help at all.  (-: Why those hardware guys
couldn't figure out how to invent "ambidextrous" chips is beyond me
:-)

If you have soldered-in memory instead of socketed, get someone REAL
GOOD at soldering to do the job.  Then be sure to speak to your
favorite diety requesting there be no negative interference.

If you have sipps, it may be easier but more expensive in that you buy
several chips at a time, but it's a little board that plugs in.

PS  Always wanted to meet a she-devil...do you ski?  Ooops, sorry,
this isn't soc.singles, is it...forgot myself :-)  (all in fun)
-- 
<> Bob `Bear' Geer <> bgeer%javelin@dsd.es.com...dsd.es.com!javelin!bgeer <>
<>      Alta-holic <>   speaking only for myself, one of my many tricks   <>
<> Salt Lake City, <>    "We must strive to be more than we are, Lal."    <>
<>          Ootah  <>           -- Cmdr. Data, learning schmaltz          <>