2

: RetroHQ :

December 24th 2021, 11:27:42

I've now moved the 7800GD design over to using a Trion FPGA and have just ordered a prototype PCB. Definitely time to take a week off while that wings its way to me! 😄

2

: RetroHQ :

December 14th 2021, 08:17:02

I still can’t fathom how an image like this gets turned into logic. It really is the best kind of witchcraft! Absolutely amazing work and it just keeps coming. 😮
*takes a deep breath*
Here we go for the 051937, the last video chip I need to trace for TMNT.

1

: RetroHQ :

December 10th 2021, 22:34:37

Wow, cool, I’d never thought of using a metal brush for a quick larger area continuity check. That’s genius!
this is how I'm reverse engineering it. pick a pin, then use the brush to figure out what it is wired to.

11

: RetroHQ :

December 7th 2021, 16:43:10

7800GD feature reveal! I now have the ability to break into and return to running games. This will lead on to things like save states and game genie style cheats.

15

: RetroHQ :

December 3rd 2021, 17:01:41

That's now all the original commercial games running on the 7800GD on NTSC, including built-in POKEY support! I am aiming for dual POKEY and YM2151 support for final release.

News Archive

Latest Posts | February 2024 | January 2024 | December 2023 | November 2023 | October 2023 | September 2023 | August 2023 | July 2023 | May 2023 | April 2023 | March 2023 | February 2023 | January 2023 | December 2022 | November 2022 | October 2022 | September 2022 | August 2022 | July 2022 | June 2022 | May 2022 | April 2022 | March 2022 | February 2022 | January 2022 | December 2021 | November 2021 | October 2021 | September 2021 | June 2021 | May 2021 | April 2021 | March 2021 | February 2021 | January 2021 | December 2020 | November 2020 | October 2020 | September 2020 | August 2020 | July 2020 | June 2020 | May 2020 | April 2020 | March 2020 | February 2020 | January 2020 | December 2019 | November 2019 | October 2019 | September 2019 | August 2019 | July 2019 | June 2019 | May 2019 | April 2019 | March 2019 | February 2019 | January 2019 | December 2018 | November 2018 | October 2018 | September 2018 | April 2018