Show HN: Running Game Boy ROMs on the STM32 ARM Cortex Microcontroller

1. stm32boy

   1 1 55 8.1 C

   Running Game Boy ROMS on the STM32 ARM Cortex microcontroller

   

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3. Adjustris

   2 1 15 - Assembly

   Block dropping puzzle game for Game Boy

4. Peanut-GB

   3 2 359 7.9 C

   A Game Boy (DMG) emulator single header library written in C99. Performance is prioritised over accuracy.

   

   I also did something very similar when I discovered PeanutGB( https://github.com/deltabeard/Peanut-GB ) for an university project.

   I used an STM32F401 (the "blackpill" board). Shoved it into a gameboy case I got from aliexpress and connected an ILI9341 display, a PCB for the buttons I found online from some hobbist selling them and 4 AA batteries in series. The screen wasn't really the same as the gameboy's one in dimensions so it all looked very janky, but it was cool enough to impress people.

   I had no audio, I was able to play simple GB games quite well but I had some significant slowdowns with stuff like Super Mario Land 2 or the later pokemon.

5. STM32_PatternDriver

   4 1 24 - C

   STM32F103 @ 64MHz produces a periodic 2MHz bit pattern on multiple GPIOs (using TIM, DMA, GPIO)

   I'm sure you know this, and perhaps it's way too late, but still: the STM32s can certainly use DMA to write to GPIO pins. See for instance [1] (not my project, just a random search hit that seemed nice).

   [1]: https://github.com/mnemocron/STM32_PatternDriver

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