private XDLPort ExtractPort(string portCode)
{
// extract port
string[] atoms = Regex.Split(portCode, @"\s+");
XDLPort port = new XDLPort();
port.ExternalName = Regex.Replace(atoms[1], "\"", "");
port.InstanceName = Regex.Replace(atoms[2], "\"", "");
port.SlicePort = Regex.Replace(atoms[3], "\"", "");
port.SlicePort = Regex.Replace(port.SlicePort, ";", "");
port.Direction = FPGATypes.GetDirection(new Port(port.SlicePort));
return(port);
}