Bridgeport Boss 5

I've just gotten the chance to play with the ideas you gave me a
couple weeks ago for pc to boss 5 communications. I couldn't find
any kind of switches to set the baud rate of the machine, is there
maybe a default value? I have the 8 pin AMP connectors now, but I
want to make it work before I use them. Also there are two
identical 8 pin ports on the machine, which one would I use, and
whats the other for? The edit button also has an RDI function, what
is this. I appreciate any more help, and thanks for the info you
already gave me.
Nathan