Possible Mac Upgrade Questions

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Article #442

#442

From: Ravi Kulkarni
Date: Sun, 27 Jan 1985 17:17

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I was wondering how hard it would be to replace the 68k on the
mac with a little board that would contain a 68020,fpu and mmu
and plug into the 68k socket. I don't think interfacing the
68020 would be that hard since it has dynamic bus sizing. Is
there a chip set available for the 68k series equivalent to the
3 chip set offered by national in it's 32000 series, namely the
demand paged mmu, and floating point unit and cpu unit? I would
be interested in knowing some of the technical issues involved
in trying to put this in a mac both hardware and software wise.
One other question is how much improvement can be expected by
just replacing the 68000 with the 68020 at the same clock rate
and maintaining the 16 bit bus?


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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site eneevax.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!godot!harvard!seismo!umcp-cs!eneevax!ravi
From: ravi@eneevax.UUCP (Ravi Kulkarni)
Newsgroups: net.micro.mac,net.micro.68k
Subject: Possible Mac Upgrade Questions
Message-ID: <227@eneevax.UUCP>
Date: Sun, 27-Jan-85 12:17:27 EST
Article-I.D.: eneevax.227
Posted: Sun Jan 27 12:17:27 1985
Date-Received: Tue, 29-Jan-85 06:48:04 EST
Distribution: net
Organization: U of Maryland, EE Dept., College Park, MD
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