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Article #1883

1meg upgrade killer

#1883
From: John Arrasjid
Date: Sat, 04 Jan 1986 04:23
18 lines
1723 bytes
For those of you who read the article in net.micro.atari about upgrading to
1meg of memory on the ST, DON'T!!!!  First of all, the references to the 
different gauge tinned bus wires and non-tinned bus wires are not clear as
are the directions for adding the resisters to pins 6, 7 and 8 of the memory
controller. Second of all, when you finally get all the wiring done and turn
on the computer, the screen comes on for about 2 seconds and then goes blank
without booting the drive. Trying to reboot again does the same thing. I 
suggest to all of you to wait for some kind of commercial memory upgrade
before you fool with your ST. If anyone can tell me what chips I fried from
my description, I'd appreciate it. I hope they were just the memory chips. (I
tried the two TOS chips, the drive controller, and the graphics chip in another
520ST and they work fine, so that just leaves the MMU, GLUE, and the memory 
chips.

John Arrasjid                        SUNY/Buffalo Computer Science
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Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!ucbvax!info-atari
From: ugjohna@BUFFALO.CSNET (John Arrasjid)
Newsgroups: net.micro.atari
Subject: 1meg upgrade killer
Message-ID: <8601040742.AA05555@ucbvax.berkeley.edu>
Date: Fri, 3-Jan-86 23:23:51 EST
Article-I.D.: ucbvax.8601040742.AA05555
Posted: Fri Jan  3 23:23:51 1986
Date-Received: Sun, 5-Jan-86 01:07:41 EST
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