The Tone Smith
Carlos Blanco
You have to aquire the bios of each disk system. And put them in your system directory in retro arch. Retro arch will not play gamecube games, nore will it do 3ds well. It needs jit, just in time. but, for valad reasons apple doesn't allow jit cores. To find out what bios you need, load a core then look in the information/core info, and it'll tell you what it needs.