emulator

Created a Game Boy emulator in Ruby named “rubyboy,” now running in the browser via WebAssembly. It covers the implementation process, from ROM loading and CPU to PPU functionality, along with optimization techniques that improved performance significantly. The emulator offers fun development experiences and leverages testing ROMs for debugging. It's packaged as a Ruby gem available for installation.

https://sacckey.dev/posts/implementing-a-game-boy-emulator-in-ruby/