Datel Advance Game Port
AGP GBA Cartridge Adapter (disc not pictured)
|Interface||Memory Card Slot (EXI)|
The Advance Game Port was released by Datel in 2003 as direct competition to the Game Boy Player for the Nintendo GameCube. It uses software emulation that is bundled on a Datel pressed disc and supports save read/write to the actual cartridges. Cartridges are read via an adapter which plugs into the memory card port.
Preliminary information on how the adapter works has been documented on the forum thread here: http://www.gc-forever.com/forums/viewtopic.php?f=26&t=2655
Homebrew utilising the adapter