INT 33H 001fH: Deactivate Mouse Driver
Expects: AX 001fH
Returns: AX status: 001fH=deactivated OK
ES:DX address of previous INT 33H handler
Info: This deactivates the mouse driver. All interrupts used by the
mouse support are disabled, effectively eliminating all mouse
Use INT 33H 0021H to re-enable all interrupts used by the mouse
Note that the INT 33H vector remains in place, but the only
function it can perform is INT 33H 0021H (to re-enable).
You might call this just before replacing the mouse support with
your own system of interrupts and kludges. Then use the return
value in ES:DX to reinstall the previous INT 33H code at some
later time (i.e., when you exit to DOS).
See Also: INT 33H: Mouse Support
Interrupts and BIOS Services