Int 15 Fn C201  - System - Pointing Device Bios Interface (ps) - Reset     [M]

   AX = C201h

Return: CF set on error
       AH = status (see #0446)
   CF clear if successful
       BH = device ID
       BL = value returned by attached device after reset
       AAh if device is a mouse

Notes: 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
   IBM classifies this function as required

See Also: INT 33/AX=0000h,AX=C200h,AX=C207h