Questions - Universe/68, HP-9134A,VT420 composite video
david_comley at yahoo.com
Sun Apr 17 08:06:51 CDT 2005
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
- 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.
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