Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!usc!chaph.usc.edu!aludra.usc.edu!baffoni
From: baffoni@aludra.usc.edu (Juxtaposer)
Newsgroups: comp.sys.atari.st.tech
Subject: MMU numbers ....
Message-ID: <15099@chaph.usc.edu>
Date: 21 Feb 91 01:33:52 GMT
Sender: news@chaph.usc.edu
Organization: University of Southern California, Los Angeles, CA
Lines: 10
Nntp-Posting-Host: aludra.usc.edu


	It was mentioned in passing a few months ago that certain old 520STs
has a limit as to the amount of memory that they could access (that is less
than the normal 4meg limit) and that these MMUs could be identified by their
chip numbers.  Does anyone out there know which chips had this problem?  Can
anyone at Atari (Alan Pratt?) comment on this?  I just want to make sure that
when I go to put together a home-brew simm-upgrade for my 520ST, it will 
actually have a chance of working...:)

-Mike