vale@arrakis.nevada.edu (Robert Vale) (10/19/89)
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.
Thought yad like to know.....
e
Robert Vale ---> vale@arrakis.nevada.edu INTERNET
(702) 735 - 6139 Voicemmig6535@uxa.cso.uiuc.edu (10/22/89)
wow! that sounds terrible! so what's going to happen? will future system stuff allow for different chips? ack! -mark