INT 33H 0006H: Query Button-Released Counter

 Expects: AX    0006H
          BX    Button to query (0=left, 1=right, 2=center)
 Returns: AX    Button status: bit 0 = left button down   (BX & 1) == 1
                               bit 1 = right button down  (BX & 2) == 2
                               bit 2 = center button down (BX & 4) == 4
          BX    Count of times that button was released since last call
          CX    X coordinate (horizontal pixel) at last release
          DX    Y coordinate (vertical pixel) last release
    Info: This obtains:
          • The current button status.
          • The number of times the specified button (in BX) has been
            released since the last call to this function.
          • The X,Y coordinates of the pointer at the time of the most
            recent release of that button.

   Notes: All X,Y coordinates are virtual coordinates and when working with
          text mode, you must divide each value by 8 to get a character

See Also: INT 33H: Mouse Support
          Interrupts and BIOS Services