Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!netcom!hue
From: hue@netcom.UUCP (Jonathan Hue)
Newsgroups: comp.sys.m68k
Subject: Re: how do you put a 68020/881 into a 68010 machine
Message-ID: <10966@netcom.UUCP>
Date: 14 Apr 90 03:47:09 GMT
References: <1990Apr12.190353.2229@i88.isc.com> <1354@marlin.NOSC.MIL>
Distribution: comp.sys.m68k
Organization: NetCom- The Bay Area's Public Access Unix System {408 249-0290 guest}
Lines: 26

In article <1354@marlin.NOSC.MIL> aburto@marlin.nosc.mil.UUCP (Alfred A. Aburto) writes:
>
>Check out EDN magazine, something like 4 or 5 years ago there was a
>schematic and short discussion published which showed how one could
>do it.

Jan. 9, 1986, pp. 216-219.  Also get your hands on a Motorola Application
Note AN944/D "MC68020 and MC68881 Platform Board for Evaluation in a 16-bit
system".

No, my memory is not that good.  This is from the December 1988 issue of
Amiga Transactor.  There is an article in there about constructing
"LUCAS" (Little Ugly Cheap Accelerator System), an 020/881 board for the
Amiga 1000.

A company called CSA (Computer Systems Associates???) in San Diego makes
similar products for the Amiga.  Years ago I had an 020/881 board from
them and it ran in our own 68010 board.  It was not the Amiga version,
but a generic version, lacking the extra logic required by the Amiga
version to run the CPU faster than the standard Amiga speed of 7.14MHz,
and still sync with the rest of the system.  I don't know if they still
make the generic board, they still make Amiga products.  Once we hacked a
fix onto it so it would let go of the bus and let DMA work, we were able
to boot our OS and run applications with it.

-Jonathan