a system for an electronic gambling device output has been developed . the system includes , a first computing device with slot machine game logic circuitry that generates an output signal that is content tested and approved by a gaming regulatory authority for output by the slot machine . it also includes a second computing device that is external to the slot machine . this device controls the tested output content and output content that has not been tested by the gaming regulatory authority . the untested output content replaces or supplements the tested output content .