Codes:

Enter each of the following codes while at the 
title screen, if you entered the code correctly,
you will hear the sound of a tone.

Infinite Lives:
Up, Down, Left, Right, R1, L2, R2, L1. 

Infinite Super Bombs:
Square, Square, Right, Down, Down, Left, Square,
Triangle 

Machine Gun:
Right, Right, Square, Triangle, Right, Left, Down,
Down 

Level Select:
Down, Left, R1, R2, L1, L2 

Hidden Character:
Up, Up, Up, R1, L1, R2, L2, Down 

View FMV Sequences:
Triangle, Triangle, Down, Square, Up, Up, Left, 
Triangle