Pro Action Replay Codes:
Infinite Health - 00DFB3:F0 -Rune
Start With Fire/Ice Super Sword - 00DFA5:04 -Battleman100
Start With Lightning Sword - 00DFA5:03 -Battleman100
Invulnerability - 00DFAF:FF

Game Genie Codes:
Invulnerability - B62-6CE-3B4
Don't Blink From Damage - 002-89E-3B4
Infinite health (skull) - 007-A4E-A28 -Galoob
Stay invincible longer after getting hit - 307-90E-D5A -Galoob
Stay invincible a lot longer after getting hit - 807-90E-D5A -Galoob
Stay invincible for almost forever after getting hit - 002-6FE-19E -Galoob
*=Don't combine with each other
*Start with ice sword in inventory - AA0-1D4-5DC -Galoob
*Start with fire sword - AB0-1D4-5DC -Galoob
*Start with lightning sword - AC0-1D4-5DC -Galoob
Start with eye - A60-184-6E8 + FF0-164-E6E -Galoob
Start with sickle - A80-184-6E8 + FF0-164-E6E -Galoob
Start with egg timer - A90-184-6E8 + FF0-164-E6E -Galoob