Apple2 VGA on RPI Pico2

[rallepalaveev]

Hi Mark

I was wondering if you would be interested to make a firmware build of the VGA card for Apple2 based on Pico2 with 48 GPIOs, like CPB, which should be plenty of GPIOs, not to have to be muxing the A0-7/A8-15/D0-7. I can provide the hardware design. A rough calculation shows that there would be at least 6 spare GPIOs so the RGB channels can become 4-bit or even 5-bit.

[rallepalaveev]

I went ahead and designed it... only the firmware needs to be udapted. https://github.com/rallepalaveev/A2VGA2