🚀 go-pugleaf

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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