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

   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

See Also: INT 33/AX=0000h