Article View: comp.sys.mac
Article #47928Memory compatibilities between old/new Macs
From: Mike "Butterball" Kao
Date: Tue, 13 Mar 1990 05:03
Date: Tue, 13 Mar 1990 05:03
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I learned from my digital design professor that the newest Macs (beginning witht he IIci I think) have added a parity bit to each byte, now resulting in 9-bit bytes. I suppose this means that these Macs use 9-bit SIMM's? I want to know because I currently own a Mac II with 4 MB and am considering buying 4 more MB to bring my machine up to the max; however, I am concerned that, should I decide to upgrade to one of these newer Macs, all my SIMM's will be useless. Is this true? -------------------------------------------------------------------------- PLEASE reply via E-MAIL to insure my receipt of any replies. Thank you!!!! FINALLY! A permanent address........................mkao@cory.berkeley.edu ------------------------------Pi Kapp, Gamma------------------------------
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!ucsd!helios.ee.lbl.gov!pasteur!cory.Berkeley.EDU!mkaoReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!usc!ucsd!helios.ee.lbl.gov!pasteur!cory.Berkeley.EDU!mkao From: mkao@cory.Berkeley.EDU (Mike "Butterball" Kao) Newsgroups: comp.sys.mac Subject: Memory compatibilities between old/new Macs Summary: Does the parity bit render "old" SIMM's incompatible? Message-ID: <22977@pasteur.Berkeley.EDU> Date: 13 Mar 90 05:03:31 GMT References: <14624.25FC7443@stjhmc.fidonet.org> Sender: news@pasteur.Berkeley.EDU Reply-To: mkao@cory.Berkeley.EDU.UUCP (Mike "Butterball" Kao) Organization: University of California, Berkeley Lines: 14