I don't know about B20. But with B19.1, I have limited success with stty baud < com1 and echo "str" > com1 (which moves a Motion Controller.) I haven't been able to read andthing from com1. -- Regards, Rui-Tao (x679) - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".