Note: An cartridge is required to use the following codes. Change the value of the indicated memory locations to adjust the corresponding game feature.
Press P at the title screen, then enter FRUITBATas a password to enable cheat mode. Press [Cursor Left]or [Cursor Right] when "Press Fire" flashes onthe title screen to select a new starting level. Press one ofthe following keys during game play to activate the correspondingcheat function.
Please more details about the unknown information.
Press the P key at the title screen and then type 'FRUITBAT'. Start any level, and then press the indicated keys.
At the title screen:
Enter CATFOOD as a password at the title screen.