Select, A, Down, B, Up, Down.
Infinite Lives
B, A, Right, B, A, Right, A.
Infinite Projectiles
Up, Down, Up, B, Left, B.
Infinite Time
Right, A, Down, Right, A, Down.
Invulnerability
Select, Up, Up, Select, Left, Left.
Level Select
Up, B, A, Down, B, A.
Special 1
Left, A, Left, B, Left.
Special 2