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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

~~~~~~~~~~~~~~~~~~~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