Re: SuperPET 6702 IC

From: David Roberts <daver21145_at_gmail.com>
Date: Sat, 22 Oct 2022 16:57:08 +0100
Message-ID: <CAC5emFFGLLYVN-Vam7PmhcH6=s_9eyiA6sxF457+CCv1Vp_27A_at_mail.gmail.com>
I have posted my 6702 reverse engineering work (for those who are
interested) at
https://drive.google.com/drive/folders/1zSlATKktnqrmED8qstq9JTWhHr_ceEsV?usp=sharing
.

I completed this work back in 2013 (ish).

Dave

On Sat, 22 Oct 2022 at 16:27, Frank Wolf <webmaster_at_frank-wolf.org> wrote:

> You might want to take a look here:
>
> http://forum.6502.org/viewtopic.php?f=4&t=6674
>
> https://www.forum64.de/index.php?thread/116391-mos6702-superpet-dongle-dissected/&postID=1695189
>
>
>
> On 22.10.2022 16:30, ruud_at_baltissen.org wrote:
> > Hallo allemaal,
> >
> >
> > I once had a SuperPET but sold it. Main reason: I want to tinker with
> > computers I have and tinkering with a perfect SuperPET is not done
> > IMHO. The idea was to create my own upgrade to turn a 8032, 8096 or
> > 8296 into a SuperPET anyway. To avoid inventing the wheel twice I did
> > some research lately and found two old projects:
> >
> https://forum.vcfed.org/index.php?threads/commodore-8032-add-on-board-superpet.49423/page-4
> >
> > https://github.com/nils-eilers/uMMF
> >
> > I was able to contact Dave, the owner of the first project and he
> > pointed me to the 6702. I completely forgot about that one. To make it
> > short: what is known about it now? Bo Zimmerman's site still says
> > nothing is known and I found a PDF that mentions patching the various
> > Waterloo disks.
> >
> > But I wonder: hasn't anybody tried a brute force attack yet? And you
> > don't have to start from zero; Mike Naberezny wrote the document I
> > mentioned above so the routines that approach the 6702 are known,
> > including input and output: Waterloo-D64-Disk-Patches.pdf
> >
> https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjRo4ThgfT6AhVMPewKHaO6BfMQFnoECEUQAQ&url=http%3A%2F%2Fmikenaberezny.com%2Fwp-content%2Fuploads%2F2012%2F04%2FWaterloo-D64-Disk-Patches.pdf&usg=AOvVaw0r69W200tHnCnujugkTap9
> >
> >
> > If I create a board, I won't use the same, IMHO stupid, idea of
> > powering the 6502 off so the 6809 can access the bus. I'm using a
> > 65816 anyway and it can be tri-stated, so why not making use of it?
> > Another advantage (I think), the 6502/65816 can continue after the
> > instruction it gave to activate the 6809.
> >
> > Any comment, ideas, etc is welcome!
> >
> >
>
>
>
Received on 2022-10-22 18:04:33

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