Parity 的值列表
  NOPARITY    = 0 ;    {$EXTERNALSYM NOPARITY}
  ODDPARITY   = 1 ;    {$EXTERNALSYM ODDPARITY}
  EVENPARITY  = 2 ;    {$EXTERNALSYM EVENPARITY}
  MARKPARITY  = 3 ;    {$EXTERNALSYM MARKPARITY}
  SPACEPARITY = 4 ;