Int 1F Fn FC  U - C&t "superstate" Bios - Set Alarm Time                   [b]

   AH = FCh
   BL = 03h
   CH = hour by BCD
   CL = min by BCD
   DH = sec by BCD

Return: CF set on error (incorrect time format or Alarm is not enable)

See Also: AH=FCh/BL=01h,AH=FCh/BL=02h,AH=FCh/BL=05h