Sebastian StaacksDec 20, 2022

Finally released: The GB Interceptor.

An open source rp2040-based adapter that goes between your (unmodified) Game Boy and the game cartridge to record or stream your gameplay via USB.

Video: https://youtu.be/6mOJtrFnawk
Details: https://there.oughta.be/a/game-boy-capture-cartridge

A Game Boy capture cartridge: The GB Interceptor

YouTube
Show threadHumbird0 Fandom
@DiConX
I'm very curious about how this works on a technical level. I wouldn't expect the gameboy to be sending its screen frame-buffer to the cartridge or vice-versa. How is video output data available to the cartridge pins?
Jan 13, 2023 at 11:02pmWeb
Show threadSebastian StaacksJan 14, 2023
@humbird0 Since the Game Boy runs its code directly from the cartridge, the Interceptor can follow the same instructions and recreate the VRAM content. A emulated graphic unit then renders the image. (The links in the post provide much more detailed explanations.)
Show threadHumbird0 FandomJan 14, 2023
@DiConX
Parallel emulation?!
That's freakin' nuts! Of course that would be possible now.