Int 33H Function 1FH (31) Disable mouse driver

Disables the mouse driver and returns the address of the previous Int 33H handler.

Call with:

AX = 001FH

Returns:

If function successful

AX = 001FH

ES:BX = segment:offset of previous Int 33H handler

If function unsuccessful

AX = FFFFH

Notes:

When this function is called, the mouse driver releases any interrupt vectors it has captured other than Int 33H (which may include Int 10H, Int 71H, and/or Int 74H). The application program can complete the process of logically removing the mouse driver by restoring the original contents of the Int 33H vector with Int 21H Function 25H, using the address returned by this function in ES:BX.