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# Meteor GBA - RetroBIOS

Type | libretro
Classification | community_fork
Source | https://github.com/libretro/meteor-libretro
Upstream | https://github.com/blastrock/meteor
Version | v1.4
Profiled | 2026-03-24
Cores | meteor
Systems | nintendo-gba

Platform details

gba: - bios_size: 16384 - hle_bios: True - source_ref: ameteor/source/bios.cpp, ameteor/source/cpu.cpp:245-311 - notes: Full HLE BIOS. The libretro port never loads an external BIOS file.

Cpu::SoftwareInterrupt() checks HasBios() — if false (always in libretro), SWI calls are routed to C++ reimplementations.

Technical notes

GBA emulator by Philippe Daouadi (2009-2011), libretro port by Hans-Kristian Arntzen. HLE BIOS in ameteor/source/bios.cpp handles SWI calls via Cpu::SoftwareInterrupt() when HasBios() is false (ameteor/source/cpu.cpp:245-311). The libretro port never calls LoadBios() and never queries RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY. Standalone frontends (GTK, text) support optional real BIOS loading.

No BIOS or firmware files required. Generated on 2026-03-25T14:56:43Z