I managed to get it to play Game of life on my old 24×24 LED display…
The LED display is controlled by 9 MAX7219 LED controllers that is interfaced using the VIA.
The shift register in the VIA is used rather than bit banging the data with IO ports, this allows for a better shift out rate.
This one was used in another 6502 project so it wasn’t to hard to convert, just had to make sure the code compiled on the WDC compiler.
6502.org Forum: http://forum.6502.org/viewtopic.php?f=1&t=3510
High Res Picture of the setup: https://raw.githubusercontent.com/alamorobotics/W65C816SXB-Game-Of-life/master/Game_Of_Life_01.jpg
The code is on Github if you want to have a look at it…
https://github.com/alamorobotics/W65C81 … me-Of-life
Creator ID: Alamorobotics