Path: utzoo!utgpu!attcan!uunet!super!udel!rochester!rutgers!apple!han
From: han@Apple.COM (Byron Han, Architect)
Newsgroups: comp.sys.mac
Subject: Re: Mac //x upgrade (price)?
Message-ID: <17844@apple.Apple.COM>
Date: 27 Sep 88 15:03:45 GMT
References: <1797@uokmax.UUCP> <1057@lakesys.UUCP> <766@drexel.UUCP>
Sender: uucp@super.ORG
Reply-To: han@apple.com.UUCP (Byron Han, Architect)
Distribution: na
Organization: Apple Products - Networking & Communications
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In article <766@drexel.UUCP> jeff@drexel.UUCP (Jeff White) writes:
>  Do you need to purchase the PMMU if you have or are upgrading to a Mac IIx?
>I was under the impression that the 68030 had the memory management unit
>built in (like the 80386 chip does).  If this is true, I don't know why Apple
>would list the PMMU as part of the upgrade path from a II to a IIx.
>
Upgrade paths starting from a standard Macintosh II:
1.  Get a PMMU.  
    End result? 68020/68881/68851 with standard floppy drives.
2.  Get a PMMU.  Get a floppy drive upgrade kit.  
    End result? 68020/68881/68851 with SuperDrive.
3.  Get a floppy drive upgrade kit.
    End result? 68020/68881 with SuperDrive.
4.  Get a logic board upgrade kit.  Get a floppy drive upgrade kit.
    End result? 68030/68882 with SuperDrive.  You have a Macintosh IIx.

68030 has on-chip MMU.  Does not require a 68851.  If your dealer tells you
otherwise, he/she is wrong.  

This is not an official Apple endorsement or statement.  This does not
imply availability or pricing.
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Byron Han, Communications Architect                   "Just say NO to MS-DOS."
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