27 Nov
2016
27 Nov
'16
4:28 p.m.
Follow up
-
I don't think I have issues with my M9312, thanks for your help. There
are a number of candidate issues with my 11/40 which are causing my system
to not be able to initiate a bootstrap of the TU58 ROM using the M9312, or
bootstrap manually by using the front panel.
There is at least partial communication between the TU58 emulator (running
on Comm port 3) of my PC, the M7856's jumpers *I think* are correct to
serve as the serial card on the PDP 11/40 end.
I have the LTC turned off.
(S59 off / S510 on)
There is always more testing I can do, but I
suspect my issues are not
with
the serial card. Taken holistically, I think there is a DMA UNIBUS issue
somewhere. Just a hunch.
Can you elaborate on why you suspect this is the case? Can you describe
your system in detail?
If anyone knows of or would be willing to make an
XXDP TAP image
compatible
with a 16K PDP 11 I can convert to download via PDPGUI.
PDP11GUI doesn't use TAP files. You can use PDP11GUI to load individual
XXDP diagnostics into the PDP-11 without needing to boot XXDP at all. J?rg
has provided a wonderful database of diagnostics here:
http://www.retrocmp.com/tools/pdp-11-diagnostic-database. Find the device
you need to test and grab the diagnostic binaries, listings, and
documentation and go to town. (See section 5 of
http://www.retrocmp.com/how-tos/using-pdp-11-diagnostics/227
-pdp-11-diagnostics-running-them to see how that's done.)
Given I also have
Yes the controller, cable, and disk were tested and working in another
system, recently. I have more than one working cable and controller. I
did not personally test the RL02s I have, but one was used a lot by the
previous owner, I have a 2nd that was also used by previous owner before I
took possession of them.
I use both the M9312 DL ROM and manually entering in the bootstrap without
the M9312 installed (replace with terminator card). With the ROM method
the system repeats an attempt over and over.
system is looping between instructions 173022 -->173156 (error reset the
world), 173160 (retry)..back to 173022
When I first power on the values in the control status register (774400)
are good. 1-6 and 8-13 are cleared, bit 7 is set.
After I attempt to boot (DL at the @ prompt), you can see the light pattern
repeat over and over, looping through 173022 -->173160.
I HALT the system and recheck the control status register. This time
15 - error (composite error (ERR))
10 - EO (operation incomplete (OPI))
7 - stays lit
function code F2 = 1, F1 =1, F0 =0. this code indicates "HFT" (Header Not
Found)
To me (and this is just me) the bootstrap is not waking up the RL11
controller, and can go no further.
I am not an expert, just doing the best I can, hope this helps explain.
Bill
issues initiating RL11 bootstrap (with known
working equipment),
What issues are you having? Does it hang? Halt? How are you
bootstrapping? I assume you know the RL11 and the RL02 and the pack
involved are all known-working?