Path: utzoo!attcan!uunet!pyrdc!pyrnj!rutgers!bpa!drexel!jeff
From: jeff@drexel.UUCP (Jeff White)
Newsgroups: comp.sys.mac
Subject: Re: Mac //x upgrade (price)?
Summary: Is PMMU needed for 68030 (Mac IIx)?
Message-ID: <766@drexel.UUCP>
Date: 26 Sep 88 23:19:39 GMT
References: <1797@uokmax.UUCP> <1057@lakesys.UUCP>
Distribution: na
Organization: Drexel University, Phila., Pa.
Lines: 13

> 1) Currently available is a PMMU chip.  This provides upgraded memory
> management for the Mac II.  Apple states that "the PMMU chip is required for
> the A/UX operating system and will be used by future versions of the Macintosh
> operating system."

  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.

						Jeff White
						Drexel University - ECE Dept.
						rutgers!bpa!drexel!jeff