Int 16 Fn AF50  - K3plus V6.00+ (api V2.0+) - Check If Function Supported  [K]

   AX = AF50h
   BX = 4B33h ('K3')
   CH = function
       00h get function flags
       CL = 00h

       Return: CX = supported function flags (see #0537)
       nonzero reserved for extensions

See Also: AX=AF20h,AX=AF4Dh,AX=AF51h,AX=AF80h

Bitfields for K3PLUS supported function list:
Bit(s) Description (Table 0537)
 0 function 4Dh supported
 1 function 50h supported
 2-3   reserved (0)
 4 function 20h supported
 5 function 25h supported
 6 function 51h supported
 7 reserved (0)
 8 function 80h supported
 9 function 81h supported
 10    function 82h supported
 11-15 reserved (0)