INT33HEX

AX=0 RESET THE MOUSE DRIVER.
AX=1 SHOW THE MOUSE CURSOR.
AX=2 HIDE THE MOUSE CURSOR.
AX=3 BUTTON PRESSED AND CURSOR POSITION. Returns:
     BX= 0 means no button pressed
     BX= 1 means left button / BX= 2 means right button
     CX= column / DX= row
AX=4 PLACE MOUSE CURSOR IN SPECIFIED POSITION.
     CX= column / DX= row
AX=5 and either BX= 0 for left button or BX= 1 for right button
     MOUSE DATA WHEN SPECIFIED BUTTON PRESSED. Returns:
     BX= number of presses / CX= column / DX= row
AX=6 and either BX= 0 for left button or BX= 1 for right button
     MOUSE DATA WHEN SPECIFIED BUTTON RELEASED. Returns:
     BX= number of releases / CX= column / DX= row
AX=7 SET HORIZONTAL CURSOR RANGE
     CX= left column / DX= right column
AX=8 SET VERTICAL CURSOR RANGE
     CX= top row / DX= bottom row