Well, the PDP 11/10 is working now. After repairing the PSU and making
sure the voltages were within limits, I placed it back.
Then I did vacuum the backplane and also cleaned the card edges with IPO.
After inserting the modules, I entered the value '1000' in the SW and pressed
'load addr'. It nicely did show the address in the display. The I tried
to load the value '777' into it, by pressing 'DEP'. Display didn't
change,
so I reloaded '1000' and see if there was a value, ... not!
Weird, but possible the on of the G boards was faulty, or the core itself
was in error.
After removing the G110, I rechecked the jumpers, and sure I missed one,
the board was set for the 2nd 8K area. So after soldering in the jumper
it was replaced and the machine powered on again.
This time I executed the same actions, and this time I got the entered
value back. A little test program was then loaded to see if the processor
did work at all, which it did (I used the 'cont' switch to see if a
loop was executed).
Only thing to remain is to make a little cable which needs to go into
the berg connector at the back to interface with the on board uart
for the console. After that I'm goint to add an RX02 interface card to
see if I can load XXDP and perform some cpu diagnostics.
Ed