🚀 go-pugleaf

In article <1991Apr17.035213.29724@eddie.mit.edu>, shawn@eddie.mit.edu (Shawn F. Mckay) writes:
>Howdy. I am having some trouble getting an RQDX3 working with two RD53's,
>in a BA123 using the dispatch board in slot 13 (AB or CD).
>
>It never seems to find the drives:
>?40 NOSUCHDEV
>?06 .....
>
>Sometimes I get (I tried dub1 just "in case"):
>?41 DEVASSIGN, DUB1
>
>I have both the Tech Manual, and the MicroF, and neither seems
>to cover a few important points:
>a)	The signal distribution board (M9058) has some jumpers,
>	which have no documentation, (I'm told they "matter" but
>	no one seems to recall why or how).
>
>b)	By advice and example keeping the cable untwisted seems
>	to work between the dist board and Rqdx3, what about the
>	cables between the dist board and the displays in front,
>	the cable between the dist board and the lights have 4
>	heads, which is drive 0?
>
>c)	The jumpers on the RQDX3 itself SEEM easy, is there any magic
>	one should know about? The setup NEVER seems to work, we have
>	a bunch of Rqdx3's here, KNOWN good, (they work in BA23 boxes),
>	so do the RD53's we use. Why is the BA123 such a pain to get
>	working?
>
>We have looked through the manuals, the configuration we are using
>is "legal" according to it, but its awful unclear, which is not my
>usually feeling from DEC manuals, can anyone out there offer some
>assistance in this matter?
>
>					Thanks,
>					  -- Shawn
>
>p.s.
>We run ESDI controllers in our ba123's just fine :-)

Have you tried verifying the CSR address?  This is set by a bank
of jumpers "A2 - A12".  If you hold the card so that the edge-connector
is on your left and the component side facing you, A2-A12 runs verticle
and is relatively close to the edge-connector.  A2 is at the top.

                                                1 1 1
[A]                             2 3 4 5 6 7 8 9 0 1 2

Primary Addr (772150, "DUA")    O I O I I O O O I O I
Secondary Addr (776150, "DUB")  I I I O I I O O O O O

I is jumper-installed, O is jumper out.
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Michael F. Santangelo                 + Inet: mike@uc780.umd.edu
VMS / UNIX Systems                    +       mike@socrates.umd.edu
Academic Computing UMUC               + Bnet: MIKE@UC780
(The University of Maryland,          +       MIKE@UMUC (not visited often)
 University College)                  +<Your clever net-phrase here>