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Article #1764one meg upgrades - PLEASE READ or fry your ST
From: D'arc Angel
Date: Mon, 16 Dec 1985 18:44
Date: Mon, 16 Dec 1985 18:44
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1473 bytes
~~~~~~~~~~~~~~~~~~~pop goes the ST~~~~~~~~~~~~~~~~~~~
i just fried my ST and after talking to atari and my local dealer i
have tracked down the problem. It is related to the 1 Meg upgrade
and the new proms, it seems that the early postings of "how to
upgrade ...." left out 4 critical resisters (60 ohm 10% tol); 2 must
be placed on the CAS lines and 2 on the RAS lines, all 4 go on the
MMU (i know it isnt really an MMU) side. the upgrade will work fine
w/o the resistors until you put in the new proms, the difference in
the current drain will cost you all your memory chips and possibly
the MMU.
--
god bless Lily St. Cyr
-Rocky Horror Picture Show
Name: James Turner
Mail: Imagen Corp. 2650 San Tomas Expressway, P.O. Box 58101
Santa Clara, CA 95052-9400
AT&T: (408) 986-9400
UUCP: ...{decvax,ucbvax}!decwrl!imagen!turner
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 / ST 1.0; site imagen.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!gamma!epsilon!zeta!sabre!petrus!bellcore!decvax!decwrl!sun!saber!imagen!turner From: turner@imagen.UUCP (D'arc Angel) Newsgroups: net.micro.atari Subject: one meg upgrades - PLEASE READ or fry your ST Message-ID: <157@imagen.UUCP> Date: Mon, 16-Dec-85 13:44:22 EST Article-I.D.: imagen.157 Posted: Mon Dec 16 13:44:22 1985 Date-Received: Wed, 18-Dec-85 05:41:51 EST Distribution: net Organization: The Houses of the Holy Lines: 20