013-F89-2AB Player one starts with very little energy
1F3-F89-2AB Player one starts with 1/4 energy
3A3-F89-2AB Player one starts with 1/2 energy
523-F89-2AB Player one starts with 3/4 energy
FF3-F89-2AB Player one starts with more energy
013-FF9-2AB Player two starts with very little energy
1F3-FF9-2AB Player two starts with 1/4 energy
3A3-FF9-2AB Player two starts with 1/2 energy
523-FF9-2AB Player two starts with 3/4 energy
FF3-FF9-2AB Player two starts with more energy
884-619-6E7 Start with sec. on the timer
884-619-6E7 Start with sec. on the timer
884-619-6E7 Start with sec. on the timer
884-619-6E7 Start with sec. on the timer
093-85A-F72 Allows you to select a higher skill level
00B-938-E6D Opponent can't win any normal rounds
005-838-B3E Fireball doesn't do any damage
405-838-B3E Fireball does more damage
885-838-B3E Fireball kills
009-249-3B7 Nobody takes damage from anything but throws/grabs

The rest of the codes only work for Ryu

005-0B8-A2A Foot sweep doesn't do any damage
405-0B8-A2A Foot sweep does more damage
885-0B8-A2A Foot sweep kills
004-F78-A2A Crouch punch doesn't do any damage
404-F78-A2A Crouch punch does more damage
884-F78-A2A Crouch punch kills
004-A78-A2A Normal upper cut doesn't do any damage
404-A78-A2A Normal upper cut does more damage
884-A78-A2A Normal upper cut kills
004-CF8-A3A Straight punch doesn't do any damage
404-CF8-A3A Straight punch does more damage
884-CF8-A3A Straight punch kills
004-BB8-C42 Standong hack kick doesn't do any damage
404-BB8-C42 Standong hack kick does more damage
884-BB8-C42 Standong hack kick kills
005-B58-A22 Rolling throw doesn't do any damage
405-B58-A22 Rolling throw does more damage
885-B58-A22 Rolling throw kills
005-338-A2E Jumping straigh up and kicking doesn't do any damage
405-338-A2E Jumping straigh up and kicking does more damage
885-338-A2E Jumping straigh up and kicking kills
004-D98-C4A Standing short kick doesn't do any damage
404-D98-C4A Standing short kick does more damage
884-D98-C4A Standing short kick kills