On 2015-10-28 20:35, Ben Sinclair wrote:
For 18 bit addresses, I assume I would look at 74400 instead? I get
177777 there.

Um? 74400 is 15 bits... :-)
18 bits would be 774400. But 22 bits would be 17774400. And 16 bits would be 174400.

I would primarily expect 16 bits addresses to be used on a KDF-11, but I could be wrong. Early revisions only supported 18 bit addressing, but later models supported 22 bit addressing. But how that is reflected in the micro-ODT on a KDF-11 I don't know. I don't even know if it's actually micro-ODT, or some more primitivt console mode on that CPU. I haven't actually worked on a KDF-11 in about 20 years. I know the KDJ-11 better at this point. (Or the models with a physical front panel...)

I did just try moving the RLV11 boards below everything else (except
the BDV11), with the same results as before.

I feel that this is just random testing and moving stuff around, which I doubt is very helpful.

        Johnny


On Wed, Oct 28, 2015 at 12:29 PM, Johnny Billquist <b...@update.uu.se> wrote:
On 2015-10-28 18:25, Ben Sinclair wrote:

I just tried to read 774400 from ODT, and it just gives the question
mark. So, I don't think it's seeing it at all right now! I'll try
moving it next.


I wonder if it really uses 18 bit addresses in the console.

         Johnny



On Wed, Oct 28, 2015 at 11:46 AM, Ben Sinclair <b...@bensinclair.com>
wrote:

No magic smoke so far!

I think you had written something a while back that would test that
interrupt. Was that correct, or is there another diagnostic I can use
to test that?

The 17440 wasn't a typo, it's just my misunderstanding of how the
addressing works. I'll read the actual location later today and see
what I find!

On Wed, Oct 28, 2015 at 11:43 AM, Noel Chiappa <j...@mercury.lcs.mit.edu>
wrote:

      > From: Ben Sinclair

      > According to the Microcomputer Interfaces Handbook, my H9273
backplane
      > should be all ABCD.

Yup, that was one of the first things I checked - whilst realizing that
if
it wasn't, it was too late... :-)

      > Am I correct in that I shouldn't have any problem using the RLV11
in
      > that backplane?

Not that I am aware of.

          Noel




--
Ben Sinclair
b...@bensinclair.com






--
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: b...@softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol





--
Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: b...@softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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