How to Install and Use GoBoy: A Cross‑Platform Game Boy Emulator

Today we present an interesting game emulator called GoBoy , a cross‑platform Game Boy and Game Boy Color emulator that can run most Game Boy games and some Game Boy Color titles, with sound and color support.

GoBoy

GoBoy was originally created by its author as a development practice project and is continuously updated. It includes debugging functions that help users understand how to operate the emulator and can serve as a reference for building similar emulators, though these functions may reduce execution speed.

Installation

To get started, download the latest GoBoy release from GitHub:

https://github.com/Humpheh/goboy/releases/tag/v0.5

After installing Go, run the following command to install GoBoy into your Go bin: go get github.com/Humpheh/goboy/cmd/goboy If you are using Go 1.11, you can also clone and build manually:

git clone https://github.com/Humpheh/goboy.git
cd goboy
go build -o goboy cmd/goboy/main.go

GoBoy runs on macOS, Windows, and Linux. On Windows 10 you need MinGW, and on Linux you must install GTK. The emulator uses Go's pixel library for UI binding and graphics rendering, so OpenGL is required.

Usage

goboy zelda.gb

Control keys are: ← ↑ ↓ → Z X Enter Backspace; in DMG mode the palette can be cycled with '=', and pressing F toggles fullscreen.

Additional command‑line options include:

-dmg
    set to force DMG mode
  -mute
    mute sound output

Debugging and experimental options:

-cpuprofile string
    write CPU profile to file (debugging)
  -disableVsync
    disable vsync (debugging)
  -stepthrough
    step through opcodes (debugging)
  -unlocked
    unlock CPU speed (debugging)

Debugging Shortcuts

Useful keyboard shortcuts for debugging:

Q – force background switch

W – force sprite switch

A – print GB background palette data (CGB)

S – print sprite palette data (CGB)

D – dump background map to log

E – toggle opcode printing to console (slows execution)

7,8,9,0 – switch sound channels 1‑4

Saving

If the loaded ROM supports battery‑backed saves, remember to use a <rom name>.sav file (e.g., zelda.gb.sav) placed alongside the ROM; the emulator updates this file once per second during gameplay.

Testing

GoBoy currently passes all tests in Blargg’s “cpu instruction” and “instruction timing” test ROMs.

Final Notes

The full project repository is available at https://github.com/Humpheh/goboy . For further reading on Game Boy architecture, see the following resources:

http://www.codeslinger.co.uk/pages/projects/gameboy/files/GB.pdf

https://github.com/retrio/gb-test-roms

http://www.codeslinger.co.uk/pages/projects/gameboy/beginning.html

http://bgb.bircd.org/ – invaluable for debugging

https://github.com/AntonioND/giibiiadvance/tree/master/docs

https://github.com/trekawek/coffee-gb