# gasm keyboard layout: <pad> <button> <key code>... (KeyboardEvent.code names)
# player 1
1 up ArrowUp
1 down ArrowDown
1 left ArrowLeft
1 right ArrowRight
1 a KeyX
1 b KeyZ
1 x KeyS
1 y KeyA
1 l KeyQ
1 r KeyW
1 select ShiftRight
1 start Enter
# player 2 (used while fewer than two gamepads are connected)
2 up KeyI
2 down KeyK
2 left KeyJ
2 right KeyL
2 a Period
2 b Comma
2 x KeyM
2 y KeyN
2 l KeyU
2 r KeyO
2 select Backspace
2 start ControlRight NumpadEnter