Int 15 Fn 8D  - Hunter 16 - Get/set Boost Charge (spm)                     [b]

   AH = 8Dh
   AL = function
       00h get

       Return: AL = Fast Charge state (00h prevented, else allowed)
       nonzero set
       BH = Fast Charge state (00h prevent, nonzero allow)

Return: AH = status
       00h success
       FFh failure
Desc:  control whether Fast Charging (200ma rather than 70ma) is allowed

See Also: AH=8Ch