Duke Nukem 3D Mega Drive Cheat codes


I need cheat codes for Duke Nukem 3D for the MegaDrive.

And yes, i have the original game card from TecToy.

I also have the game as a rom file for wgens or similiar

emulators. i searched the rom file and found some text thats says: god mode on/off - all weapons

so there must be a cheat code to actived the cheat.

Can somebody help me???
i will have a look around.but just couse in the rom file it says god mode on/off does not mean it has a cheat mode.that could of been in the testing phase,and after it was tested it could of been removed.