11/34a issues

[Julian Wolfe]

Okay, so I FINALLY worked out my BA11-K power supply issues and got
everything sorted out and installed again.

 

However, I'm back to where I started when I got this thing (which I never
got past) - I turn it on, the display comes up at 173536.  However, whenever
I try to EXAM anything, it displays 000000 and the BUS ERR light comes on.
I can clear, but I get that BUS ERR no matter what I do.  I haven't got a
serial console connected to it yet - I got this info by going through the
11/34 diagnostics in the manual.

 

Here's my setup:

BA11-K box

DD11-PK backplane

 

UNIBUS layout:

A     B     C     D     E     F

M8266 M8266 M8266 M8266 M8266 M8266 1

M8265 M8265 M8265 M8265 M8265 M8265 2

M9301 M9301 M7800 M7800 M7800 M7800 3

H222A H222A H222A H222A H222A H222A 4

blank blank blank GRANT blank blank 5

H222A H222A H222A H222A H222A H222A 6     

blank blank blank GRANT blank blank 7

M7850 M7850 M7859 M7859 M7859 M7859 8

M9302 blank blank GRANT blank blank 9

 

I've tried switching some boards around, no help.

All grant cards are installed where you could read FLIP CHIP from the
processor side.

 

I have NO idea what's wrong.  Is the memory possibly bad?  That's the only
thing I could think of.

 

Any help, as always, would be much appreciated.

 

TIA

Julian