Action Replay (GC)

Action Replay is a cheat device that allowed for game enhancements and unauthorized cheats.

IPL ROM dump required
Action Replay will always crash at boot or freeze in a black screen unless Skip BIOS is disabled and DSP LLE is selected. Skip BIOS can only be disabled if an IPL dump from a real GameCube is present in User\GC.

Action Replay hardware
Action Replay will complain about missing hardware if no Memory Card is selected for Slot B. When you select "Start Game" or "Freeloader" in the main menu, Action Replay will freeze in "Updating Action Replay Hardware" screen, but disabling and reenabling the Memory Card from slot B in Dolphin (while emulation is running) will unfreeze it, allowing the disc to be swapped and the game to start.