The machine gun has a recoil action when pressing the fire button and shakes around when firing.
The game is non-cpu, but uses roms and proms to store game data, game screen images and a scream sound effect.
The scream sound effect is stored in a ROM chip and is the only audio sound effect for Desert Patrol that is stored in a rom. The audio pcb uses discrete components to generate remaining sound effects and also to control how scream sound effect is played.
Desert Patrol uses an amber plexiglass overlay to provide color to images and some status text to give meaning to the on-screen numbers. The overlay is seated inside the cab, near the bottom of cab and just above the monitor.