code: def nic_s(msg):
      
      tc = typecode(msg)
  
      if tc != 31:
          raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
  
      msgbin = common.hex2bin(msg)
      nic_s = int(msgbin[75])
  
      return nic_s
docs: Obtain NIC supplement bit, TC=31 message
  
      Args:
          msg (string): 28 bytes hexadecimal message string
  
      Returns:
          int: NICs number (0 or 1)