Cades for Star Wars battlefront 2

Pause at any time and enter these:
Invincible: up x3 left down x3 left up x3 left right
Infinite ammo: up down left down x3 left down x3 left down x3 left down x4 left right
Once you have entered it you will hear a beep sound after each one.
Note: These are not all the cheats for star wars battlefront II