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

It's really interesting, it might be possible to include  6502 + 6809 + Z80
In the same emulation and emulate from pet2001 to cbm8296, superpet and cbm8032 + cp/m board

The actual 6502 cpu emulation only takes 20kb of flash on 128kb 

--
didier

-----Message d'origine-----
De : owner-cbm-hackers@musoftware.de [mailto:owner-cbm-hackers@musoftware.de] De la part de Mike Naberezny
Envoyé : lundi 5 décembre 2011 17:15
À : cbm-hackers@musoftware.de
Cc : André Fachat
Objet : Re: emulaton of superpet / cbm8000 + cp/m board on avr

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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