Questions - Universe/68, HP-9134A,VT420 composite video

I have a couple of questions - and requests for assistance - for some of the items I picked up this weekend from TCF. My other post to the list details what there are. Here goes: - HP 9134A: The unit is appears on the HPIB bus but doesn't identify itself correctly. From the HP64000 side I get a 'NO DISC' error when I try to format it. I am trying to determine whether the light on the front of the ST506 inside should be on or not once the drive comes up to speed or whether it only comes on when that HBIB address is being accessed. Any hints ? - Universe/68: Operating system for the Charles River Data Systems Universe/68 anyone ? I understand these machines used to run UNOS. It would be fun to try to boot this thing. Also - any background information on the machine itself would be of interest. - I'd like to use a surplus VT420 as the display for the DEC 350 Pro I picked up. This will entail identifing a point on the VT420 schematic where I can inject the composite video signal from the 350. So I need the VT420 schematic. Does anyone on the list have one ? - manual or operating notes for the Zia Tech ZT 488 ? I can probably figure this one out but documentation is always welcome. Thanks as always for the list's help. Regards, Dave __________________________________ Do you Yahoo!? Plan great trips with Yahoo! Travel: Now over 17,000 guides! http://travel.yahoo.com/p-travelguide