Not to my knowledge. But the schematics are on my Google drive and it is a very simple circuit. You will not end up with the volatile nature of the 6702 if you slow the clock down - but who cares? The correct implementation of the 6702 was embedded into VICE. Willing to help out if you need it. Dave On Sat, 31 Dec 2022, 09:19 , <didier_at_aida.org> wrote: > is there somewhere a verilog or vhdl file to reproduce the 6702 in a cpld ? > Le 10/22/2022 à 5:57 PM, David Roberts a écrit : > > 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 2022-12-31 13:00:02
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