Qbus. However, I think you may have hit on something.
The
RQDX3 is not at the end of the bus. If memory serves (I'll
verify this after I get home from work today), the backplane
arrangement is something like this:
Do you have grant continuity cards underneath the half-height cards? Ah, no
- M9047 is a grant card....
I'd swap it to
A B C D
+-------------------------------------+
| CPU |
+-------------------------------------+
| Memory |
+-------------------------------------+
| DHV11 |
+-------------------------------------+
| ???? ** |
+-------------------------------------+
| TQK50* | RQDX3 |
+-------------------------------------+
| | |
+-------------------------------------+
| | |
+-------------------------------------+
| | |
+-------------------------------------+
| | |
+-------------------------------------+
That should sort it out.....
cheers
a/w