Unlimited time:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 15537,165
No bombs:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 19019,0
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 17427,0