Use the following directions to sucesfully cheat:
During the spinning logo and Death Star backgrounds move your joystick up+fire, down+fire, left+fire, and finally right+fire. You should hear a voice say "Lucas Arts." Type in the following codes during game play to cheat.
+ resets damage to zero
- adds damage (why?)
z restarts game
esc. advances a level or stage
To skip chapters hit the numbers 1-9 for chapters 1-9, and letters A-F for chapters 10-15.