HOW TO: Setup Dolphin Wii/Gamecube Emulator in Full. Cube/Wii Memory Manager is an application to backup Nintendo Game. The virtual SD card has important use for homebrew apps on Dolphin. By default, it will be created with the size of 128MB. Dolphin can store data to a virtual SD card named sd.raw. To access these features, the player must either hold A on controller 1, have no disc inserted, or have the. The GameCube's Main Menu, commonly known as the GameCube BIOS, is the Initial Program Loader (IPL) of the GameCube and its top level interface, allowing the player to load discs, change settings, and manage up to two memory cards at once.