Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!unmvax!deimos.cis.ksu.edu!harris.cis.ksu.edu!paryavi
From: paryavi@harris.cis.ksu.edu (Saiid Paryavi)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Motorola 68851 PMMU discontinued
Message-ID: <4195@deimos.cis.ksu.edu>
Date: 19 Oct 89 14:33:18 GMT
References: <929@unsvax.NEVADA.EDU>
Sender: news@deimos.cis.ksu.edu
Reply-To: paryavi@harris.cis.ksu.edu (Saiid Paryavi)
Organization: Kansas State University, Dept of Computing & Information Sciences
Lines: 23

In article <929@unsvax.NEVADA.EDU> vale@arrakis.nevada.edu (Robert Vale) writes:
>Organization: The Vale Organization, Inc. 
>KeywordsMac II, PMMU, Motorola:
>
>i
>I just spoke with Bob Novis of Motorola Intra-company sales, and he told m that 
>Mototola has discontinued the MC 68851 Paged Memory Management Unit. This is the 
>chip thet Apple uses in the Mac II for virtual memory function. He further said that the last sale of these chips was on May 5, 1989 for a quantity of two to
>a distributor. Currently he said, Motorola has 4 chips in stock and that they
>are located in Tokyo, Japan. What is interesting about all this, besides th large amount
>of Mac II owners who will not be able to upgrade, is that Notorola is still 
>mass producing the 68020 microprocessor. I wonder how you can get virtual memory out of that now without the PMMU? Oh, thre is no alternate supplier for the chip.

I just spoke to the Motorola distributor in Kansas City and they said they
could supply as many PMMUs as I liked.  They even game me some quantity 
discount prices.


--
Saiid Paryavi                      			Computer Science Dept.	
Internet:  paryavi@harris.cis.ksu.edu			Nichols Hall
BITNET:    paryavi@ksuvax1.bitnet			Kansas State University
UUCP:      {rutgers, texbell}!ksuvax1!harry!paryavi	Manhattan, KS  66506