Use minicom to control the serial port configuration of the target board in FedoraCore6 or Core5

In FedoraCore6 or Core5, use minicom to control the serial port configuration of the target board-Linux general technology-Linux technology and application information. The following is a detailed description. : 0wl; l1

Recently, because of the U-BOOT Kernel File upgrade in the processing of embedded systems, but need to set up a Fedora Core5 or 6 system, access the target board serial port through minicom, so as to achieve the purpose of controlling the target board, however, in the actual configuration of minicom, communication fails. When the Fedora Core6 PC is connected to the target board using the RS232 serial port, there is no response in The minicom environment. However, for the same hardware, after the PC is installed with XP, the target board can be normally accessed through the Super Terminal. Therefore, it is determined that the configuration of minicom in Fedora Core5 or Core6 is incorrect, but no reason has been found so far. Now we will put the picture of the minicom configuration here. I hope you can give me some advice, how can we achieve normal communication.