O'Riley's Mine

Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program.

POKE 9521,0

Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program.

POKE 9523,170

Unlimited lives (alternate):
Load or reset the game, then execute the following BASIC commands before running or restarting the program.

POKE 9251,44
POKE 9523,170

Cheat mode:
Load or reset the game, then execute the following BASIC command before running or restarting the program.

POKE 12761,44