Article View: comp.sys.atari.st
Article #41552SIMMs for the STE
From: Arto Nummelin
Date: Sun, 04 Mar 1990 19:24
Date: Sun, 04 Mar 1990 19:24
56 lines
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1534 bytes
I've just tested 1M x 8 SIMMs from a Mac IIcx in my 520 STE. IT WORKED!!! I took out the 256k x 8 SIMM (150 ns) and replaced them with two 1M x 8 (80 ns) made by Samsung. Then I booted up and checked with a DA the amount of memory installed. 2048k it said!!! Then I tried to add my own SIMMs to the two free sockets. When I booted, it rebooted, rebooted ....... So it seems that you can't mix the 1M and 256k SIMMs. Here's the pinout for the SIMM if anybody is interested: 1 +5V 2 CAS 3 D0 4 A0 5 A1 6 D1 7 A2 8 A3 9 GND 10 D2 11 A4 12 A5 13 D3 14 A6 15 A7 16 D4 17 A8 18 A9 19 - 20 D5 21 WE 22 GND 23 D6 24 - 25 D7 26 - 27 RAS 28 - 29 - 30 +5V I found an article in BYTE Jan 88 (Ciarcia's circuit cellar, BCC180 computer) with a SIMM in the schematic. The article number for that SIMM (a 256k x 8) was HB 561009A. I checked that my SIMM had the same pinout (except for pin 18 which is only on 1M SIMMs). So now you know. /Arto Nummelin Arto.Nummelin@euas20.ericsson.se
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!mcsun!sunic!ericom!erix.ericsson.se!eua.ericsson.se!euaanuShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!mcsun!sunic!ericom!erix.ericsson.se!eua.ericsson.se!euaanu From: euaanu@eua.ericsson.se (Arto Nummelin) Newsgroups: comp.sys.atari.st Subject: SIMMs for the STE Keywords: SIMM, STE, Message-ID: <2703@erix.ericsson.se> Date: 4 Mar 90 19:24:30 GMT Sender: news@erix.ericsson.se Reply-To: euaanu@euas20.ericsson.se (Arto Nummelin) Organization: Ellemtel Utvecklings AB, Stockholm, Sweden Lines: 56