Cheat mode: 
Press [F1] to display the menu, then press 
A + L + [Ctrl] to enable cheat mode. Enter 
one of the following three digit codes at the 
prompt that appears to activate the corresponding 
cheat function.



Code     Effect
325      99 lives
589      Ending sequence 
822      Double item value 
7     Level select 
642      Enable God mode 
643      Disable God mode