Xerox 820

Hello all, Recently I acquired a Xerox 820, but as a single board, w/ power supply. I also received many docs (including a tech manual with Monitor listings and schematics). I know originally these were "all-in-one" computers, but many appear at ham fests in exactly the same shape as mine -- as a single board computer. Of course, hooking a terminal up to it produces nothing (even testing at different baud rates/parity/stop bits, etc), so I'm wondering: - Are there any modifications (ROM or jumpers) to "convert" this to use the serial port for a console, rather than the keyboard and video display? I couldn't find anything in my docs, but of course, I have not read them in depth yet. In return, I could offer copies of the docs, or thanks to 22NICE and my Compaticard (thanks Don!), copies of the files on the diskettes (CP/M, "Word Processor", "Diagnostics", "Training Files" and "Program Files"), or images of the disks (assuming Teledisk could do it -- I haven't tried that yet). The disks are 5.25", SSSD Thanks! Rich B.