Patrick Finnegan <pat at computer-refuge.org> wrote: I can given a specification of the protocol that said program needs to speak. It is not a 4.3BSD derivative, it is actual 4.3BSD (the -Quasijarus suffix is irrelevant here), and since I am the last person in the world running it, I count it as running my own OS that no one else uses. And since there is not any software out there today that will compile or run on it except that written by me, I use the rule of thumb that I need to write all software I need myself from scratch. Unfortunately there is a lot of modern pee sea-minded RS-232 equipment that cannot be configured to baud rates slower than 115200 or 57600. Design and build a new RS-232 interface option for my MicroVAXen? Lacking the necessary special Q-bus driver and receiver ICs. MS