The games built in camera, the "NamCam", is currently not emulated. Triforce titles are currently controlled via the GameCube input.You must then make sure the patches are enabled in the "Patches" tab.
#Mario kart arcade gp dx teknoparrot 1.66 Patch#
To apply it, right click on the game in the gamelist, click Edit Config, and paste the patch into the config file. It will give you 99 Credits so you can play the game and allow the game to boot properly.
Mario Kart Arcade GP 2 (マリオカート アーケードグランプリ 2) is the second arcade-only iteration of Nintendo's Mario Kart series, developed by Namco for the Triforce arcade board.