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From: crowe@whuts.ATT.COM (CROWE)
Newsgroups: comp.sys.mac
Subject: Hot-rodding a Mac IIx
Keywords: Mac II, 68030, SIMMs, accellerator
Message-ID: <5362@whuts.ATT.COM>
Date: 14 Feb 89 13:58:48 GMT
Organization: AT&T Bell Laboratories, Whippany NJ
Lines: 20

Howdy,

Recently, I bagan hunting for a 4 Mbyte SIMM upgrade for my Mac II.  Trying
to play it smart, I thought I would try to get the fastest SIMMs I'll ever
need so, even if I traded in my motherboard (or whatever) I would get to keep
my memory.  Well, the fastest 1 Mbyte SIMMs are the 80 nsec type which I
found for $350.  The 60 nsec SIMMs are in the 256 K configuration only and 
therefore out of the running.  The guy that offerred them to me mentioned an 
upgrade/hack being rumored that will allow the replacement of the Mac IIx 
crystal with a faster (20-25 MHz). I assume that a faster 68030 and 68882 would 
be necessary.  He said that the 80 nsec SIMMs would be suitable and that
two wait states would be required.

So, not knowing alot about wait states, the Mac IIx architecture, and Apple's
latest hot-rodding rumors I thought I would cast this tidbit upon the
usenet waters.  Anybody know anything out there?


Donald Crowe
whuts!crowe