code: def _parse_and_check_elements(self, data):
          
          crc = data[-1]
          test_crc = crc32(data[:-1]) & 0x0ff
          elem_data = data[2:-1]
          if test_crc == crc:
              while len(elem_data) > 0:
                  (eid, elen) = struct.unpack('BB', elem_data[:2])
                  self.elements[self.element_mapping[eid]] = \
                      elem_data[2:2 + elen].decode('ISO-8859-1')
                  elem_data = elem_data[2 + elen:]
              return True
          return False
docs: Parse and check the CRC and length of the elements part of the memory