My PDP-11/20 includes a M7251 KG11-A board, which appears to be a CRC helper option for communications software. I've been able to find some diagnostic code listings for it, but no manuals. Does anyone out there have any manuals for it, either scanned or dead-tree? If I can't download it, then I would like to either buy-for-cheap it or borrow-and-copy it. Thanks! -- Jeffrey Sharp