Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!husc6!amcad!stech!sysop
From: sysop@stech.UUCP (Jan Harrington)
Newsgroups: comp.sys.mac
Subject: Re: Mac II recommendation
Message-ID: <693@stech.UUCP>
Date: 18 Dec 88 12:20:57 GMT
References: <4717@phoenix.Princeton.EDU>
Organization: Scholastech, Inc., Waltham, Mass.
Lines: 31

in article <4717@phoenix.Princeton.EDU>, zimerman@phoenix.Princeton.EDU (Jacob Ben-david Zimmerman) says:
> 
> Okay. I asked this question before, and got a clear answer, but this
> recent discussion has confused me again.  Shirley Kehr (sp?) says that
> she was told that future MacOS releases might use the PMMU in the Mac
> IIx, so she should get that and not worry about having to upgrade a Mac
> II.  Now, I was told that the Mac II has a slot for the 68851 PMMU;
> would this be the 'upgrade' that other folk are talking about?  If the
> MacOS does indeed begin to utilize a PMMU, would a 68851 stuck in a Mac
> II fill the bill?
> 

Here's how I understand the situation.  There is a motherboard upgrade for
a Mac II that replaces the existing motherboard with the 68030 board.
An alternative is to add the 68551 PMMU; the existing 68020 plus added
PMMU should work with future OS upgrades just as well as moving to the
68030 motherboard.

Now, if I'm wrong about this, somebody let me know, please.

Jan Harrington, sysop
Scholastech Telecommunications
UUCP: husc6!amcad!stech!sysop or allegra!stech!sysop
BITNET: JHARRY@BENTLEY

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