If anyone needs them, I have most of the documentation for the Digivue displays used in these devices (at least the one partial unit I recovered...) Digivue was an Owens Illinois company. The manuals I have are: USER MANUAL 512-60 UM607 Display D141 MAINTENANCE MANUAL 512-60 MM608 Display D141 USER MANUAL 512-60 UM609 Power Pack MAINTENANCE MANUAL 512-60 MM610 Power Pack They cover just about every detail of the display module operation and its power and interfacing needs. They do not include details about the rest of the Plato terminal (serial interfacing, etc.) Note that I do not know if these are the same modules used in the original UI devices or if they were only used in the CDC "commercial" implementation. I did do some Plato interface hacking back in the 70's when we were thinking of "supporting" the terminals on our local timesharing system - (note "supporting" did not mean running Plato - just accepting the terminals as log-in devices and mating their peculiar interfaces to an ASCII data stream.) Unfortunately, I never removed the cover on the terminals to look at their innards. I was only one of the software weenies on the project. -Gary At 12:46 3/19/2001 -0800, you wrote:

--- "Gregory R. Travis" <greg(a)ciswired.com> wrote: I think I used one of these briefly on a visit to Purdue around 1978. Those are the ones that I remember using at OSU at the same timeframe. My most frustrating memory is trying to explore some kind of dungeon and finding it cleaned out of monsters and treasures. My favorite memory was using the touch screen to "assemble" lab equipment for a virtual experiment distilling water. Sorry I can't help locate any of this hardware. It wasn't as common as other technologies, IIRC. I know I spent more time on a DECwriter II playing games with some remote RSTS system than I ever did on Plato. -ethan ===== Even though my old e-mail address is no longer going to vanish, please note my new public address: erd(a)iname.com The original webpage address is still going away. The permanent home is: http://penguincentral.com/ See http://ohio.voyager.net/ for details. __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/