DoubleCherryGB - RetroBIOS¶
| Type | libretro |
| Source | https://github.com/TimOelrichs/doublecherryGB-libretro |
| Version | v0.17.0 |
| Profiled | 2026-03-18 |
| Cores | DoubleCherryGB |
| Systems | nintendo-gb, nintendo-gbc |
No BIOS or firmware files required. This core is self-contained.
DoubleCherryGB is a Game Boy / Game Boy Color emulator forked from TGB Dual by GIGO and Hii. It adds multi-Game Boy emulation with virtual link cable support for up to 16 players, DMG-07 4-Player Adapter emulation, and built-in Pokemon distribution events.
No BIOS or boot ROM files are required or supported. The core does not call RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY for firmware loading and does not attempt to open any files from the system directory.
In cpu.cpp:82, the program counter is initialized to 0x100 (post-boot ROM entry point), and cpu::reset() sets all registers to their post-boot values directly (AF=0x01B0 for DMG, 0x11B0 for CGB). This means the core completely bypasses the boot ROM sequence via HLE register setup.
The .info file at libretro-core-info confirms no firmware entries.
Supported extensions: gb, dmg, gbc, cgb, sgb. Library version: v0.18.0.
Generated on 2026-03-20T19:12:20Z