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