Xref: utzoo comp.sys.amiga.programmer:4861 comp.sys.amiga.hardware:10495
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!sdd.hp.com!spool.mu.edu!uunet!mcsun!hp4nl!rulway.LeidenUniv.nl!rulcvx.LeidenUniv.nl!breemen
From: breemen@rulcvx.LeidenUniv.nl (E. van Breemen)
Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.hardware
Subject: Re: Hacking in a 68020
Message-ID: <1991Jun25.072048.13307@rulway.LeidenUniv.nl>
Date: 25 Jun 91 07:20:48 GMT
References: <1991Jun24.215409.3740@csis.dit.csiro.au>
Sender: root@rulway.LeidenUniv.nl (System PRIVILEGED Account)
Organization: Leiden University, the Netherlands.
Lines: 22
Nntp-Posting-Host: rulcvx.leidenuniv.nl

In article <1991Jun24.215409.3740@csis.dit.csiro.au> dave@csis.dit.csiro.au (David Campbell) writes:
>How difficult would it be to build a board with a 68020 and an MMU that
>would drop into the CPU socket replacing the 68000?  Ignore the
>possibility of 32-bit memory, I just want the MMU capabilities.
>
>An 030 would probably be easier but also more expensive.
>
>Thanks..
>Dave Campbell

I think you can better buy an 68030 because the MMU is relativly expensive
for an 68020. Making an interface is very simple. Just read the docs
of Commodore about expansionboards and follow the guidelines. We have made
a synchronous 68020 board in 6 weeks and it worked the first time we 
plugged it in. An 68030 interface will be more or less the same. Things
will get a bit more complicated for an asynchronous board.Then you will
have to add a datalatch for the databus. This is not neccesary for a
synchronous board.

hpoing this will help,

Erwin van Breemen