The GB emulator is running on the RP2040 of the flash cart
github.com/zwenergy/GB-...

And some Faceball 2000 for @stopskeletons.bsky.social

I'm regretting that I pushed away getting into the PIO part of the RP microcontroller for far too long and "only" used it as a powerful dual-core. If you use the PIO stuff the right way it's a complete game changer.

The current version is at the attached repo. GB ROMs can be injected via a simple browser-based patcher.
github.com/zwenergy/GB-...

I pushed the code for this to its own branch. But it's very much not polished (and no sound or rumble), mostly just to put it somewhere for now.
github.com/zwenergy/PM2...

Beside the processing power of the RP2040 (essentially both cores are available, since the cart serving is completely done via PIO & DMA), one advantage could be easier programming with modern tools.

Here's a link to the STL
www.printables.com/model/135197...