Extended MD Pad Buttons

Number	$B2
Readable	Yes
Writable	No
Short Description	Reading additional buttons on MD pads

 bit 7 = 1 if Right Pad X pressed
 bit 6 = 1 if Right Pad Z pressed
 bit 5 = 1 if Right Pad Y pressed
 bit 4 = 1 if Right Pad MODE pressed
 bit 3 = 1 if Left Pad X pressed
 bit 2 = 1 if Left Pad Z pressed
 bit 1 = 1 if Left Pad Y pressed
 bit 0 = 1 if Left Pad MODE pressed