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Article #22910

More memory for Mac+...?

#22910
From: Peter Fagerberg
Date: Wed, 09 Dec 1987 15:08
23 lines
1419 bytes
Hello. I've been wondering how to get a little extra memory for my
Macintosh Plus (needed in these days of Hypercard and Multifinder).

I was wondering if the normal brute-force method could be used;
  Just solder 1M memory chips on top of the existing one (piggyback)
  and attach CS (chip-select) and whatever else is needed from the
  adressbus to select the appropiate chip. I haven't really checked
  out the memorychips but maybe an inverter is needed for some signals.

  If I'm correctly informed there are 22 bit defining the adress on
  a MC68000, making it possible to have 4M of memory.

*If* this is possibly, would programs take advantage of it?

Well, maybe this is one of the most stupid questions asked to USENET
since it all began and if so - please forgive my ignorance...

                                 Peter-- 
==============================================================================
Peter Fagerberg             UUCP: {seismo,enea,mcvax,decwrl,...}!kuling!peterf
Applied Computer Science    ARPA: kuling!peterf@seismo.css.gov
Uppsala University          Analog: +46 18-128286 or 8-102927
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!mcvax!enea!kuling!peterf
From: peterf@kuling.UUCP (Peter Fagerberg)
Newsgroups: comp.sys.mac
Subject: More memory for Mac+...?
Message-ID: <570@kuling.UUCP>
Date: 9 Dec 87 15:08:48 GMT
Organization: DoCS, Uppsala University, Sweden
Lines: 23