fixGB Core in RetroArch: Source Guide to Game Boy and Game Boy Color Support

The fixGB core is a core for RetroArch that targets Nintendo Game Boy and Game Boy Color content. This guide summarizes what the official libretro documentation states about the core: what it is, which file types it loads, how it is named in the RetroArch library, who authored and licensed it, and where to find its repository and issue tracker. It also describes a documented filename convention for older colorization hacks.

Overview

According to the official documentation, fixGB is a preliminary Game Boy emulator written as a learning experience. Despite that description, the core still supports many games and features that are attractive to users, including support for Game Boy Color palettes via BIOS and support for older colorization hacks. The same documentation notes that users looking for a simple, turnkey Game Boy / Game Boy Color emulator will probably have better luck with more mature options, such as SameBoy, Gambatte or GearBoy, depending on their use-case.

Supported file extensions

Content that can be loaded by the fixGB core uses the following file extensions: .gb, .gbc and .gbs. The core is associated with the RetroArch database entries for Nintendo - Game Boy and Nintendo - Game Boy Color.

The documentation describes a filename convention for older colorization hacks. Add 'InvVRAM' to the file name so that a file such as foo.gb becomes foo (InvVRAM).gb. This is how the documentation indicates that the core supports those older colorization hacks.

Library name in RetroArch

In RetroArch, the fixGB core's library name is 'fixGB'. The documentation also states that the fixGB core has no core options.

Author and license

The fixGB core has been authored by FIX94 and is licensed under the MIT license.

External links

• fixGB repository: https://github.com/libretro/fixGB
• Report fixGB core issues: https://github.com/libretro/fixGB/issues