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From: borton@uva.UUCP (Chris Borton)
Newsgroups: comp.sys.mac
Subject: Re: memory: SE vs. SE/30
Keywords: memory
Message-ID: <684@uva.UUCP>
Date: 4 Apr 89 16:10:36 GMT
References: <1989Mar30.123218.26898@csuchico.uucp> <28180@apple.Apple.COM>
Reply-To: borton@uva.UUCP (Chris Borton)
Organization: Faculteit Wiskunde & Informatica, Universiteit van Amsterdam
Lines: 25

In article <28180@apple.Apple.COM> jdevoto@Apple.COM (Jeanne A. E. DeVoto) writes:
>robin@csuchico.uucp (Robin Goldstone) writes:
>>Is it true that I cannot use my Mac SE memory (100ns 1MB simms) in
>>an SE/30?  I thought the same memory would work but someone has
>>told me otherwise...
>
>The SE/030 requires SIMMs that are 120ns or faster -- in other words,
>100ns parts should work fine.
>
>The confusion may have come about because an SE can take slower chips
>(down to 150ns), and the slow chips can't be transferred to an SE/030.

Ah, but are they low-profile or not?  In the SE/030 ONE bank (up to 4) of
SIMMs *MUST* be low-profile; the other bank may be high profile.  Thus,
there's another gotcha.  The memory that comes with the SE/030 is
low-profile; thus, if you buy a 1M SE/030 and buy 4M of high-profile RAM
somewhere else, you're OK, but as soon as you look at replacing the Apple SIMM
with someone else's SIMM you'd better look carefully first...

There was a note on AppleLink to this effect when the SE/030 came out.

-cbb
-- 
Chris Borton	borton%uva@mcvax.{nl,bitnet,uucp} 
Rotary Scholar & Network Administrator, University of Amsterdam CS