Roms, Emulation with Retro Go on the ByteBoi V2

Andre_Bossard · February 22, 2026, 12:35am

I made Retro Go work on the ByteBoi V2

abossard/retro-go/blob/byteboi-rev2-target/components/retro-go/targets/byteboi-rev2/docs/README.md

# CircuitMess ByteBoi Rev. 2
- Status: completed (build verified)
- Ref: https://circuitmess.com/products/byteboi-2-0
- Ref: https://github.com/CircuitMess/ByteBoi-Firmware
- Ref: https://github.com/CircuitMess/ByteBoi-Library

Button mapping:
- Start: Select + A
- Menu: Select + B
- Option: Select + Up

# Hardware info
- ESP32
- 320x240 TFT path (ST7789/ILI9341-compatible driver path in retro-go)
- microSD storage
- Shift-register based button input on rev2 hardware

# Verification links (source of rev2 mapping)
- Device init and revision switch (`v2_0` + `Pins3`):  
  https://github.com/CircuitMess/ByteBoi-Library/blob/master/src/ByteBoi.cpp

This file has been truncated. show original

This made it work just right now. I’m patching some SD Card issues and will also streamline the documentation a bit.

I’m a software engineer, but out of lazyness I use AI to generate all changes and wil clean it up a bit.