Never Mind: MicroVAX 3

From: Zane H. Healy <healyzh_at_aracnet.com>
Date: Mon Sep 6 11:34:04 1999

Tim Shoppa wrote:
>Again, you aren't really giving us enough details (What backplane slots?
>Which backplane? Your previous message mentioned both a BA123 and
>a Sigma box, but I couldn't figure out which one you were trying to

Oops, thought I'd mentioned that originally, this is the Sigma chassis for
two reasons, it fits nicely in the bottom of a rack, and I'm saving the
BA123 for a spare for my /73.

Here is the original config, didn't work:

KA650 -----
MS650 -----
MS650 -----
RQDX3 TQK50
-rest empty-

This worked:
KA650 -----
MS650 -----
MS650 -----
RQDX3 GRANT
-rest empty-

and this:
KA650 -----
MS650 -----
MS650 -----
RQDX3 empty
GRANT empty
-rest empty-

Final solution:
KA650 -----
MS650 -----
MS650 -----
RQDX3 empty
TQK50 empty
-rest empty-


>use the boards in. What else is in the system? What exactly was the problem?
>In your previous message you said "the problem was the TK50 controller", but
>I still haven't a clue what the symptoms were!) to answer your question, but
>if you draw out the arrangement of cards both "before" and "after" I'll
>take a shot!

IIRC, the Diagnostic it stopped on was 34 (but might be off a few). Seem
to work great this way, but it sounds like I should swap the RQDX3 and
TQK50 from what Allison says.

Do you happen to know the configuration of a Sigma Backplane? Somehow I
suspect that would answer my questions.

                                Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh_at_aracnet.com (primary) | Linux Enthusiast |
| healyzh_at_holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
Received on Mon Sep 06 1999 - 11:34:04 BST

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