... program which is working. This program uses following code to open the port. Where do I find the source in xHarbour/FW to check if the values are identically? Best regards, Otto int ComOpen(unsigned Nr,int Baud,int Parity,int Stopbits,int Databits){static const int iPMode[]={NOPARITY,EVENPARITY,ODDPARITY,SPACEPARITY,MARKPARITY};static ...