Category: mouse/pointing device

INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - ENABLE/DISABLE

	AX = C200h
	BH = new state
	    00h disabled
	    01h enabled
Return: CF set on error
	AH = status (see #00522)
Note:	IBM classifies this function as required
SeeAlso: AX=C201h,AX=C207h,AX=C208h