System Of Levers

Solving problems no one else seems to be having

Making a Very Practical Game Boy Flash Cartridge

About half a year ago I got excited about doing silly things with game boys. I had just learned about ROM banking and the basics of how game boy cartridges work and I became enamoured with the idea of cramming future technology into a little cartridge to do STUFF!

Shockingly it turns out I wasn't the first person to think of this! People have put all sorts of exciting things into these carts. One person built one with a co-processor to play Wolfenstein 3D. There's the cartridges that lets you use a game boy as a wireless controller. There's even someone who co-opted the cartridge form factor as a convenient way to swap keyboard controllers (I realllly love this one). So, if I was going to join in on this fun, I'd need a way to play.

Conveniently while this excitement was brewing I also happened to be getting into Ben Eater's wonderful videos about building electronics projects on breadboards. So it seemed obvious to do that!

Add some text to outline what's in the rest of the post

How do game boy cartridges work?

pins and rom and stuff! Also it depends!

What's a flash cartridges?

You can flash it with new code/games.

What am I going to need?