Re: SuperPET 6702 IC

Ruud, I sent you a DM on VCFED covering the 6702.

Mike Naberezny hosted my documents and code.

I can send you the schematic of the 6702 that I reverse engineered...

Dave


On Sat, 22 Oct 2022, 15:30 , <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;  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!
>
>
> --
>
> Kind regards / Met vriendelijke groet, Ruud Baltissen
>
> www.Baltissen.org
>
>
>