Check out G&W ports already made, possibly save a ton of time

[deanhuff]

The team that works on porting NES & GB to the Super Mario G&W hardware has already done a lot of work to get the emulators running on that hardware. The STM32 chip is very similar between the two, perhaps look at harvesting some of their code for the PD?

https://github.com/kbeckmann/game-and-watch-retro-go

Seperatley, their Discord is here and they have a great bunch of developers: https://discord.gg/p3FuA9P8