Supported Features:
Game Boy, Game Boy Color and Super Game Boy (SGB and SGB2) emulated
Best compatibility and accuracy in graphics, sound and timing (see Compatibility)
Game Link Cable supported (allows 2 players to play over a TCP/IP network)
MBC1, MBC2, MBC3, MBC5, MBC6, MBC7, HuC1, HuC3, Rocket, MMM01, Gameboy Camera and multi-carts supported
All 4 sound channels and digital sound supported (each can be on or off)
Graphics on background, window and sprites can be set individually on or off
Battery supported
Real time clock supported
Zipped and gzipped files supported
Screen size: 1x1, 2x2, 3x3 and full screen
Frame skip supported
Joypads/joysticks supported
GameGenie and GameShark cheats supported
Screen dump supported
Save states supported
Close colors as a real Game Boy Color
Input playback supported
Save states and input files are compressed
Battery save, save states and input files are portable across all supported
platforms, currently MS Windows, Linux and MS-DOS
Default border image supported
Up to 4 players are supported (SGB only)
Gameboy Printer supported
Per-game configuration
Sound wave file output
Customizable Gameboy palettes
Adjustable emulation speed (25%, 50%, 100%, 200% and 400%)
Graphics filters: Super 2xSaI, Super Eagle, scanline and bilinear
Special effect: sprite shadow (experimental)
Special porperties of LCD (Mix Frame)
Generic flashcart (most public domain, trainers and hacks required this)
Demotronic Trick
GBC palettes (default and built-in) for GB mono games
5-speed auto-fire
Barcode Boy supported (required game: Battle Space)
Boot ROM for GB supported (not included)
Simulate boot ROM for GBC
Un-supported Features:
Infrared port (including HuC1 and HuC3)
Camera functions in Gameboy Camera
TAMA5 (Tamagochi 3)
Some SGB features, mainly on sound
Rumble (Perfect Dark, Pokemon Pinball and Ready 2 Rumble Boxing)
Bar code reader (Bardigun)
Full Changer (Zok Zok Heroes)
Mobile Adaptor (Mobile Trainer)
GPS receiver (GPS Boy)
Network update service of MBC6