RLV11 Debugging

[Ben Sinclair]

Well, I tried a few things, including reading the CSR, which doesn't
appear to be what I expect.

I ended up removing the RLV11 and making sure my system was still
passing the other tests, and I've found that I can no longer run
JKDBD0 to test the CPU, which was working before. It never prints any
of its starting messages, and the run light turns off.

So I'm apparently back to just trying to get the basic system running.

I have no idea why this system is so flaky. One day it works great,
the next it doesn't. Maybe it's just cursed!

On Mon, Aug 17, 2015 at 4:43 PM, Ben Sinclair <bensinc at gmail.com> wrote:
> Now that I (hopefully) have my PDP 11/23 running (it passes CPU and memory
> tests, anyway), I've been messing with my RLV11 so I can use my RL02.
>
> For a first step, I'm trying to run the VRLBC0 diskless diagnostic to check
> the controller. I checked that the address and vector switches are set to
> the defaults according to he manual, and also verified them with a
> multimeter.
>
> The manual says the default vector address is 330, though the diagnostics
> default to 160. I tried it both ways with the same result, though I should
> be on 330.
>
> I'm not actually sure what "BR LEVEL" refers to, so I left that at the
> default.
>
> This is a PDP 11/23 with an H-9273 backplane. I have the M8186, M8067,
> M8043, then the two RLV11 boards, M8013 and M8014, then an M8012.
>
> Here's a sample run. It appears to start, but never does anything else. If
> I give it a bad address it does complain, so I think I have the switches
> correct.
>
> Does anyone know what I might try next? Thanks!
>
>
> .R VRLBC0
> VRLBC0.BIC
>
> DRSSM-G2
> CVRLB-C-0
> RLV12 DISKLESS
> UNIT IS RLV12, RLV11, OR RL11
> RSTRT ADR 145702
> DR>START
>
> CHANGE HW (L)  ? Y
>
> # UNITS (D)  ? 1
>
> UNIT 0
> RLV12           (L) Y ? N
> RLV11           (L) Y ? Y
> CSR ADDRESS     (O)  174400 ?
> VECTOR          (O)  160 ? 330
> BR LEVEL        (O)  4 ?
>
> CHANGE SW (L)  ? Y
>
> ERROR LIMIT FOR AUTO-DROP  (D)  0 ?
>
> ALL REMAINING QUERIES ARE FOR OPTIONAL (MANUFACTURING)
> G5388 TEST-LOOP-MODULE SET-UP.  USE <^Z> TO BYPASS.
>
> G5388 TLM INSTALLED     (L) N ? N
>
>   MMU AVAILABLE
>   MEMORY SIZE  124 KW
>   18 BIT ADDRESSING
>
>
>
> --
> Ben Sinclair
> ben at bensinclair.com



-- 
Ben Sinclair
ben at bensinclair.com