A simple GameBoy Color emulator

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A simple GameBoy Color emulator - DinDongJI - 2026-03-27 06:45

Hi everyone,
Following the breakthrough by @NatsukiMin regarding the HP Prime G1's system vulnerabilities (Run Doom on your PrimeG1), I have successfully ported a simple GBC (Game Boy Color) Emulator to my HP Prime. This emulator is based on the peanut-gb project.
Like the Doom port, this utilizes the current firmware's memory handling to execute binaries via a backdoor.
Controls / Key Mapping:
  • Num: Open Emulator Menu
  • Vars: A Button
  • Toolbox: B Button
  • Del: Select
  • Enter: Start
  • Directional Pad: D-pad (Up, Down, Left, Right)
  • On: Exit Emulator
Installation:
  1. Restart your Prime to ensure maximum available RAM.
  2. Upload BackdoorInstaller.hpappdir and the gbemu.hpappdir app to your calculator.
  3. Run BackdoorInstaller first.
  4. Launch the gbemu app.
Known Issues:
  • This is a work in progress. Due to memory or firmware constraints, some games may fail to load (screen freeze).
  • Tested on firmware version 2025-09-15.
Huge thanks to the Peanut-GB developers and NatsukiMin for the exploit and tools.