Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!snorkelwacker!husc6!sunfs3!kent
From: kent@sunfs3.camex.uucp (Kent Borg)
Newsgroups: comp.sys.mac
Subject: Re: Simm installation
Summary: IIci is different, put the big ones in bank B
Keywords: memory IIci SIMMs
Message-ID: <579@sunfs3.camex.uucp>
Date: 17 Dec 89 20:23:54 GMT
References: <1989Dec6.215849.16064@cunixf.cc.columbia.edu> <1989Dec11.112101.213@isis.educ.lon.ac.uk> <5834@mentor.cc.purdue.edu>
Reply-To: kent@lloyd.UUCP (Kent Borg)
Organization: Camex, Inc., Boston, Mass USA
Lines: 21

In article <5834@mentor.cc.purdue.edu> ags@seaman.cc.purdue.edu (Dave Seaman) writes:
>One of the Apple manuals (I think the Owner's Manual, but I could be wrong) 
>explains how to add memory and clearly states that if different simms are 
>installed in the two banks, then the higher-capacity simms must be installed 
>in bank A.  Following the instructions, I moved the 256K simms to bank B and
>then installed the new 1 Mb simms in bank A.  When I booted I had 5 Mb of RAM.


The Macintosh IIci is different.  Either bank may have the higher
density SIMMs, but because of the onboard video eating up some of bank
A's CPU-to-memory bandwidth, but not bank B's, if you have different
density SIMMs, you want to put the bigger SIMMs in bank *B*, not bank
A.

All the other non-68000 Macintoshes out there now are as Dave said:
bigger SIMMs in bank A.

-- 
Kent Borg                lloyd!kent@husc6.harvard.edu  or  ...!husc6!lloyd!kent
                                              H:(617) 776-6899  W:(617)426-3577
"The wall has been opened.  One of the most insurmountable borders in Europe
 has become a German dance floor."  -Christoph Hein, NYT Magazine, 17 Dec 1989