Int 33 Fn 0005  - Ms Mouse V1.0+ - Return Button Press Data                [M]

   AX = 0005h
   BX = button number (see #2840)

Return: AX = button states (see #2839)
   BX = number of times specified button has been pressed since last call
   CX = column at time specified button was last pressed
   DX = row at time specified button was last pressed

Note:  at least for the Genius mouse driver, the number of button presses
     returned is limited to 7FFFh

See Also: AX=0006h,INT 62/AX=007Ch

(Table 2840)
Values for mouse button number:
 0000h left
 0001h right
 0002h middle (Mouse Systems/Logitech/Genius mouse)