INT 33,1F - Disable Mouse Driver

	AX = 1F

	on return:
	AX = 001F if successful
	     FFFF if error
	ES:BX = previous INT 33 vector

	- restores vectors for INT 10 and INT 71 (8088/86) or INT 74 (286+)
	- INT 33 interrupt vector (software) is not affected
	- use of the vector returned in ES:BX to restore the previous INT 33
	  vector can cause problems since it contains the value of INT 33
	  before the driver was installed; any other hooks into INT 33 set
	  after driver installation will not receive service