Directional Pad: Also known as the D-Pad, this pad can be pushed up, down, left, right, diagonal in any direction, or straight down for "ENTER." When a cheat says to press "up" without being specific as to which part of the controller to use, it's usually this one.
OK Key: Can be used either before or during the input of cheats.
Edit Key: Can be used either before or during the input of cheats.
Clear Key: Can be used either before or during the input of cheats.
Numeric Keypad: Primary buttons used to enter cheats.
Right Selection Key: Can be used either before or during the input of cheats.
Left Selection Key: Can be used either before or during the input of cheats.
Menu Key: Can be used either before or during the input of cheats.
