Re: emulaton of superpet / cbm8000 + cp/m board on avr

From: Mike Naberezny <*mike_at_naberezny.com*> Date: Mon, 05 Dec 2011 09:15:06 -0700 Message-ID: <4EDCEE0A.8030102@naberezny.com> · mike_at_naberezny.com

Hi André,

On 11/18/11 3:59 PM, "André Fachat" wrote:
> there is the 6702 chip on the SuperPET board, of which no information is
> known so far. It is assumed to be some kind of dongle for the 6809 software.

In the early 1980's, there was a group called ISPUG (International SuperPET 
User's Group) that published the "SuperPET Gazette" newsletter.  A few people 
in that group were reverse engineering the Waterloo software.  I managed to 
contact one of them and asked him about the 6702.  He was not clear on its 
function but agreed it's probably a dongle and remembered finding references 
to it in some floating point routines.

I recently contacted Greg James of visual6502.org and offered him a 6702 for 
die shots.  I heard back from him yesterday and he accepted.  I will send it 
to him and hopefully we can get closer to solving the mystery.

Regards,
Mike

-- 
Mike Naberezny (mike@naberezny.com) http://6502.org

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