Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!ukma!rutgers!cmcl2!lanl!a!chn
From: chn@a.lanl.gov (Charles Neil)
Newsgroups: comp.sys.mac
Subject: Re: How do I add Simms to a Mac Plus?
Summary: Can I put the 256k SIMMs from my Mac II into my Plus?
Message-ID: <821@a.lanl.gov>
Date: 2 Feb 89 14:29:07 GMT
References: <1215@cfa204.cfa250.harvard.edu> <324@rob.UUCP>
Organization: Los Alamos National Laboratory
Lines: 23

In article <324@rob.UUCP>, elliston@rob.UUCP ( Keith Elliston) writes:
< In article <1215@cfa204.cfa250.harvard.edu>, cliff@cfa250.harvard.edu (Cliff Stoll) writes:
< > I'm upgrading a Mac plus from 1.0 Mbytes to 2.5 Mbytes
< > with a pair of 1 Mbyte Simms.
< > 
< > What jumpers should I connect?
< 
< 
< I have done this upgrade on my plus, and there are not any jumpers... what you
< do have to do, is to clip a resistor.  Now... if you are going to 2.5, and wont
< be going to 2 or back to 1, you clip the resistor that says"256K" (i th
< I think that this one is either r8 or r9...)  Anyway, clip it out.  Then, you 
< have to insert your simms into one back, and that bank has to be bank #1, the
< bank that is closest to the MC68000 (or the center of the motherboard).  Both
< SIMMS must go into one bank, and must be of the same speed and size.
< > 
I'm getting 4 Megs for my Mac II.  Can I use the 1 Meg worth of 256K 
SIMMs that are now in the II for the Plus?  Does anyone make a kit to
do this?
-- 
 
Charlie Neil (chn@lanl.gov)
Los Alamos National Laboratory (505) 665-0978