INT 15 - SYSTEM - POINTING DEVICE BIOS INTERFACE (PS) - RESET AX = C201h Return: CF set on error AH = status (see AX=C200h) CF clear if successful BH = device ID BL = value returned by attached device after reset AAh if device is a mouse Note: after successful completion of this call, the pointing device is set as follows: disabled, sample rate 100 Hz, resolution 4 counts/mm, scaling 1:1, unchanged data package size SeeAlso: INT 33/AX=0000h .