Elm Town 40 – A Game Boy Emulator in Elm

Manuel Fuchs shares what he learned by taking on a very unusual Elm project: a Nintendo Game Boy emulator! Thank you to our sponsors, Ellie, Culture Amp and Joel Clermont. Special thanks to Xavier Ho (@Xavier_Ho) for editing and production of this episode! Recording date: 2018-11-10 Guests Manuel Fuchs (@malax) Show Notes 00:00 Show opening 01:58 Manuel's journey to Elm 07:09 Why a Game Boy emulator Tetris Effect video: Writing a Game Boy Emulator in Ruby 12:19 False assumptions and unexpected difficulties 18:37 Loading Game Boy ROM images as binary data 19:59 Breaking out of the Elm Architecture 22:30 Implementing a CPU instruction set in Elm Elmboy source code 25:46 Debugging and profiling 27:03 Throwing out types 31:49 Adding Pokemon compatibility 33:30 Readability, teaching and welcoming contributors 34:57 More performance optimisations 41:05 Elm + Game Boy = fun Try Elmboy