Cheat Mode:
Use the joystick to move the cursor to the top left corner of the cargo/energy screen, then press KEYPAD PLUS FIRE to enable cheat mode. The screen will flash to confirm correct code entry. Unlimited shields and lives will be available while cheat mode is active. Also, activate the following cheats by pressing the corresponding keys:
CHEAT FUNCTION – KEY
Disable enemies – F1
Full energy – F6
Various weapons?? ?- 0-9
Jump to end of game:
Enable cheat mode and select the outermost planet.