Y Over, X Over 0: X or Y data is valid.
* 1. Data overflows. (Over 255)
Y Sign, X Sign 0: X, Y data is a positive value.
: Data of 1: X, Y is a negative value.
XD7 to XD0, YD7 to YD0 Absolute value of mouse movement
1 when the Start, Middle, Right, Left button is pressed.