>Before I forget, last week I saw a BA213 with a M9405 and three M9047
>in it.
M9047's are grant continuity cards (no circuitry, just PC boards
with pins on the edge connector jumpered together to pass interrupt
and DMA signals to the next slot.)
A M9405 is a Q22-bus cable connector. This is what you use to hook
multiple Q-bus chassis together into a multi-box system. On the
other end of the cable you need a M9404.
For information on connecting multiple Q-bus systems together, telling
you which variants on the M9405 and M9404 cards you'll need for specific
CPU/backplane combinations, see Micronote 29, "Q-bus Expansion Concepts", at
http://metalab.unc.edu/pub/academic/computer-science/history/pdp-11/micronotes/
> The module database at <http://www.neurotica.com/dec-info/>
>is down, it appears, and I can't find another link like it right now.
You want the "Field Guide to Q-bus and Unibus Modules", at
http://metalab.unc.edu/pub/academic/computer-science/history/pdp-11/hardware/field-guide.txt
--
Tim Shoppa Email: shoppa_at_trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Received on Fri Sep 24 1999 - 08:33:29 BST