by Richard Russell, February 2010

Since version 5.91a, BBC BASIC for Windows has fully supported serial ports above COM9; to open such a port you need only use the regular OPENUP function:

        port% = OPENUP("COM15: baud=9600 parity=N data=8 stop=1 dtr=on rts=on")

Naturally you should specify the port parameters as required by your program.