Path: utzoo!news-server.csri.toronto.edu!rutgers!njin!uupsi!rodan.acs.syr.edu!dinapoli
From: dinapoli@rodan.acs.syr.edu (Ron DiNapoli)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Does the New Mac IIsi 2/40 comes with 3 megs of RAM?
Message-ID: <1991Mar15.110750.16694@rodan.acs.syr.edu>
Date: 15 Mar 91 11:07:50 GMT
References: <15455@june.cs.washington.edu> <1991Mar14.183702.12411@neon.Stanford.EDU>
Distribution: usa
Organization: Syracuse University, Syracuse, NY
Lines: 30

In article <1991Mar14.183702.12411@neon.Stanford.EDU> torrie@cs.stanford.edu (Evan Torrie) writes:
>chou@june.cs.washington.edu (Pai Chou) writes:
>
>>I ordered a IIsi 2/40 over a month ago through my school.
>>Today, I was told that Apple has changed the memory
>>configuration of the IIsi 2/40, and that it will come with
>>3 megabytes of RAM instead of 2meg.
>>My machine is being back-ordered.
>
>>Can anybody confirm this?  What did they change?
>>Are they using 512Kbit RAM chips?
>
>  I'm pretty sure they're using 512Kbit RAM chips, for 512KB per SIMM.
>512KB * 4 = 2MB + 1MB onboard = 3MB total.
>
>-- 
>------------------------------------------------------------------------------
>Evan Torrie.  Stanford University, Class of 199?       torrie@cs.stanford.edu   
>"And remember, whatever you do, DON'T MENTION THE WAR!"

Again, interesting.  As I mentioned in an earlier post, the box of my new
IIsi was labeled "3MB RAM".  I got back into my office and checked the Mac II
into which I put the chips that were shipped in the SIMMS bank of my IIsi 
(I had 4 1MB SIMMS waiting to go in the IIsi when it arrived).  Oddly enough
the Mac II that got the IIsi's chips still only had 5MB, not 6.  Does the
Mac II only know about 256K and 1MB SIMMS?  Would it make sense that if the
II doesn't know about 512K SIMMS that it would only use 256K of each 512K
SIMM installed, if such chips were installed?  

Ron D.