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From: conklin@msudoc.ee.mich-state.edu (Terry Conklin)
Newsgroups: comp.sys.m68k
Subject: 68020-to-68010-socket upgrade
Message-ID: <17@nancy.UUCP>
Date: Thu, 30-Jul-87 10:16:01 EDT
Article-I.D.: nancy.17
Posted: Thu Jul 30 10:16:01 1987
Date-Received: Sat, 8-Aug-87 01:03:51 EDT
Sender: usenet@nancy.UUCP
Reply-To: conklin@msudoc.UUCP
Distribution: world
Organization: Michigan State Univ., Engineering, E. Lansing
Lines: 19
Keywords: plug-in 68020-in-68010 socket
Summary: Looking for 68020 plug-in upgrade

I posted this to the net some time ago but never saw a response, and am
not certain it ever got out.

Is anyone aware of an upgrade 68020 chip that comes in a custom socket
so it can be plugged in to a 68010 system? All over the docs it says
that the 68020 is a "proper superset" of the 68010, which in my
dictionary should mean it's software transparent/compatible. Also, it
refers to the dynamic bus sizing capabilities of the 68020. It would
SEEM that by tying the proper ~DSACKx line you could teach the 68020  to
be a 16bit cpu for the purposes of replacing a 68010.

I'm really looking for an already existent upgrade along this line, but
if it's not possible (hah) (let's try "feasible") I'd be interested to
know why.

Terry Conklin
ihnp4!msudoc!conklin
conklin@cps.msu.edu
(517) 372-3131  3/12/24