Xerox D-series workstations

I've just read your mails about the Xerox's keyboard/mouse interface, and it seems I've reached the same conclusions (cool!). Now, I'm still hacking a simple 422-232 interface, using the HandyBoard's MAX232 and some TTL logic. Although, I've been able to receive ASCII text from the bus. Can't send useful data still. (I can post the details of my connections if anyone interested). When the workstation boots, it sends a burst of data through the RS422 bus (in hex): 01 55 aa 00 01 02 03 ... fe ff 00 01 02 03 ... fe ff But I still can't get a repeatable behavior, I mean, when I press some keys, the xerox seems to react, but if I press the same keys again, it does not. I suspect It has to do with an improper 422-232 level conversion. I'm going to try again tonight. Cheers, -- *** Rodrigo Martins de Matos Ventura <yoda(a)isr.ist.utl.pt> *** Web page: http://www.isr.ist.utl.pt/~yoda *** Teaching Assistant and MSc Student at ISR: *** Instituto de Sistemas e Robotica, Polo de Lisboa *** Instituto Superior Tecnico, Lisboa, PORTUGAL *** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585