INT 15 - SYSTEM - POINTING DEVICE BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. INTERFACE (PSIBM PS/2, any model) - ENABLE/DISABLE
	AX = C200h
	BH = new state
	    00h disabled
	    01h enabled
Return: CF set on error
	AH = status (see #00522)
Note:	IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. classifies this function as required
SeeAlso: AX=C201h,AX=C207h,AX=C208h


(Table 00522)
Values for pointing device function status:
 00h	successful
 01h	invalid function
 02h	invalid input
 03h	interface error
 04h	need to resend
 05h	no device handler installed