520STFM memory upgrade info request.

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Article #35945

#35945

From: Brian Woodroffe
Date: Fri, 13 Jan 1989 15:08

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I wish to upgrade my 520STFM to 1M by adding 16off 256k*1 DRAMs.
My questions are:-

1/ Are nibble mode rams acceptable?  Ie does the ST use the page address
   mode of vanilla DRAMs?

2/ What other things do I have to do besides putting in the DRAMs?

   There are 3 spare spaces for resistors near the DRAMs which I guess
   are for RAS and CAS (2off).  What value resistors?
   Are there any chip selects to be changed? (There are some chip select
   links near the boot-ROMs -- but are they anything to do with the RAM?)

   (I assume I will have to put in the extra de-coupling capacitors :-)

Thank you,
Brian Woodroffe.
e-mail == bww%hpqtdla@hplabs.HP.COM

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!ames!pasteur!ucbvax!hplabs!hpda!hpcuhb!hpqtdla!bww
From: bww@hpqtdla.HP.COM (Brian Woodroffe)
Newsgroups: comp.sys.atari.st
Subject: 520STFM memory upgrade info request.
Message-ID: <540004@hpqtdla.HP.COM>
Date: 13 Jan 89 15:08:09 GMT
Organization: HP, Queensferry Telecomms (UK)
Lines: 19