A Button - Make selection
B Button - Abort selection

A Button - Start duel
B Button - Exit Campaign
L/R Button - Toggle between level

A Button - Activate Edit Menu
B Button - Exit Deck Edit
L/R Button - Toggle between Trunk, Main Deck and Side Deck

While Edit Menu is Activated
Direction Buttons
Up/Down - Move 1 card Up/Down
Left/Right - Toggle between Deck Edit Option

A Button - Activate Deck Edit Option
B Button - De-activate Deck Edit Menu
L/R Button - Toggle between Trunk, Main Deck and Side Deck

B Button - Exit Record

B Button - Exit Calendar
L/R Button - Toggle between month

A Button - Select a card/Choose an action
B Button - De-select a selected card/Abort an action

While in Main Phrase
Direction Buttons
Up/Down/Left/Right - Move around the field/hand.

A Button - Select a card/Choose an action
B Button - De-select a selected card/Abort an action

While in Attack Phrase
Direction Buttons
Up/Down/Left/Right - Select monster card to attack/Select target to attack

A Button - Select the Attack action/Select the attacking target
B Button - Abort attack selection