Int 2F Fn 39  - Kingswood Tsr Interface - Application-specific Function C  [t]

   AH = 39h
   BL = function number (02h-FFh)
   AL = TSR ID number (01h-FFh) (see #2429)
   CX,DX,SI,DI,DS,ES may contain parameters
   BH reserved for use by the function dispatcher

Return: as appropriate for the called function

See Also: AX=3900h,AH=39h/BL=00h,AX=3901h/BL=02h