bnes

bnes emulates Nintendo NES.

About this profile

Detail	Value
Type	libretro
Classification	Frozen snapshot
Source	https://github.com/libretro/bnes-libretro
Upstream	https://github.com/Sir-Walrus/bsnes-gc
Version	v083, stated in libretro/libretro.cpp
Revision	libretro/bnes-libretro@8e26e89a93be
Profiled	2026-03-23
Profile	YAML, JSON
Cores	bnes
Systems	Nintendo NES

Technical notes

Frozen libretro port of byuu's higan v083 NES module by Ryphecha. Experimental, not maintained. ROM data passed via retro_load_game memory buffer (libretro/libretro.cpp:181-184). Cartridge::load parses iNES headers and delegates to Board::load (nes/cartridge/cartridge.cpp:18-31). System::init sets up the interface pointer and default input devices (nes/system/system.cpp:62-66). No system directory access. No FDS support. Palette hardcoded (libretro/libretro.cpp:20-37). .info declares no firmware (firmware_count absent).

No BIOS or firmware files required.

Profile data

Source analysis

• bios search:

  • retro load game: libretro/libretro.cpp:181-211 - loads cartridge data only, no BIOS
  • cartridge load: nes/cartridge/cartridge.cpp:18-31 - parses iNES header + ROM data
  • system init: nes/system/system.cpp:62-66 - sets interface pointer, no ROM loading
  • system power: nes/system/system.cpp:43-50 - powers subsystems, no file I/O
  • interface init: nes/interface/interface.cpp:17-20 - stores derived pointer, calls system.init

• fds support: no

• filesystem access: no

• system directory used: no

Next steps

• Get your files, for the setup you play on
• Every system, and the files each one needs
• When a game does not start

Data as of 4 November 2026.