SNES Keys
---------------------
On a real SNES, players controlled games using an 8-button digital joy-pad; on
Snes9x you can use your computer's keyboard (the default) or any joystick
or controller device supported by Window's DirectInput. The default key
mapping for joy-pad 1 is:

'up arrow'              Up direction
'down arrow'            Down direction
'left arrow'            Left direction
'right arrow'           Right direction
'a'                     TL button
'z'                     TR button
's'                     X button
'x'                     Y button
'd'                     A button
'c'                     B button
'return'                Start button
'space'                 Select button