Each joystick uses 4 inputs (up,down,left,right), except the 4-way is mapped to the same inputs as the player 1 8-way, so it doesn't take any extra inputs (in other words, up on the 4-way will press the same key as up on player one's 8-way). That means 8 inputs total for the 2 joysticks, 7 buttons per player, and 10 admin = 32 keyboard inputs.