All Weapons, Abilities, Ammo  At the title screen, press Up, Down, <, <, Circle, Square, Triangle, X, X, X, <, Up. (Thanks to DANMONEY@webtv.net, LWargalla@t-online.de)

Ultimate Armor

Character	To Obtain Armor
Megaman X	Highlight X, press Circle twice, press < (6X), press and hold L1+R2 and X.
Zero	Highlight Zero, press and hold R1, and press > (6X). Release R1, press and hold Circle, and press X.