Pro Action Replay Codes
Note:
Since the Pro Action Replay cartridge has the capability
to write to memory addresses outside of the Game Genie's range,
the following codes may only be enabled with that device. It
is not possible to convert them for use on the Game Genie.
Unlimited lives:
7E19F403
Unlimited keys:
7D05B2FF
Mad Dog has unlimited life:
7E19F203
Bosses die faster:
7E171200
Unlimited coins:
7E05BOFF
All codes above from Arknok1.