Prototype GBA BIOS

No clue where I picked this up, but it's definitely strange. In addition to the changed sound, using this BIOS causes minor graphics corruption in some game

PLCC Replaces Game Boy Cartridge ROM

Nintendo Massive Leak #2 : (source code Zelda3, source code Star

Prototypes by system/Game Boy Advance - Hidden Palace

New Prototype DS Lite Discovered - The Independent

The Emulation64 Network - NextGen and Retro Emulation News and Support

Nintendo Game Boy Advance SMD Large Inductor Coils L1 - 100μH

The Wonderfully Nostalgic Season of Gaming – UnderLevelled

Ultra Rare Gameboy Advance Prototype Found! : r/retrogaming

K1 GBA SP - The Independent Video Game Community

Proto:Nintendo DS/ver.40820D - The Cutting Room Floor

Prototype Mega EverDrive Pro Update