6800 System - Schematic Needed

From: Mike <ipscone555(a)msdsite.com> I know this is a long shot but I have a nice 6800 based single board computer, with keypad and LED display. It is mounted in a 2 slot chassis that has a smoked glass cover and wood sidings. It's very nice and works well. Problem is that I don't have a schematic and don't know how the memory and I/O are mapped. It also has a couple of 16 pin devices that are not installed. I guess I can buz it out and figure out what is there but that is a massive amount of work The system is marked: ASCI u68, System-X. I have tried an internet search but can't find anything on it. I think it was used in a class for learning microprocessors back in late 70s. Anyone have any leads on were I might find a schematic? photos a: http://www.msdsite.com/comp/u68.html Thanks, Remove 555 from email to email an answer.