Gearboy - RetroBIOS

Type	libretro
Classification	Official ports
Source	https://github.com/drhelius/Gearboy
Version	3.4.1
Profiled	2026-03-23
Cores	gearboy
Systems	nintendo-gb, nintendo-gbc

Technical notes

Gearboy is a Game Boy / Game Boy Color emulator by drhelius (Ignacio Sanchez). The buildbot builds from drhelius/Gearboy (upstream), not from libretro/Gearboy (abandoned fork frozen at v2.6.0 from 2018). Bootrom loading is gated behind core options (disabled by default). Without bootroms, the core HLE-skips the boot animation.

2 files | 0 required, 2 optional | 2 in repo, 0 missing | 2 with HLE fallback

dmg_boot.bin optional in repo HLE fallback
Game Boy DMG bootrom

• Size: 256 B
• Validation: size
• Source: libretro.cpp:208,211 Memory.cpp:601-606,699-738
• Platforms: lakka, recalbox, retroarch, retropie, romm

cgb_boot.bin optional in repo HLE fallback
Game Boy Color bootrom

• Size: 2.2 KB
• Validation: size
• Source: libretro.cpp:209,212 Memory.cpp:608-611,699-738
• Platforms: lakka, recalbox, retroarch, retropie, romm

Generated on 2026-04-03T20:37:39Z