Runs on a Raspberry Pi (overclocked to 900MHz) with RetroPi. Button/ joystick controls are done with a Teensy 2.0 programmed with custom code.
Screen is a generic 7" TFT LCD for vehicle headrests.
Currently runs on wall AC adapters; one for the screen, the other for the RPi. Will be consolidating the power to one 12V 1000mA adapter soon (once I find one for cheap).