Hi all Do you know what is serial_cs.o? It is in pcmcia directory. My trouble is that I need to receive data from a DOS PC and send data to a Window PC. We will miss data from DOS PC and the window PC can't receive data. After we reinstall the serial_cd.o, sometimes it will fix the problem. Does this make sense? Thanks --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/