Looking for information on HDS Viewstation...

I have a few HDS Viewstations. I am looking for any documentaion and
or software. There used to be a CD with the netOS operating system
for these however I can't find anyone who has one. I contacted
Neoware, the company that now owns what was once Human Designed
Systems (HDS). They don't have anything available on the old systems.
In addition to a copy of netOS (prior to release 4) I am also looking
for hardware documentation, such as jumper settings and pin outs.
There are a number of these things around but I can't seem to find any
docs or software. Any Help would be greatly appreciated.

Sai