[Simh] PDP-10 simulator with DMR/KDP support?
Timothe Litt
litt at ieee.org
Fri Jun 7 17:58:40 EDT 2013
>> I don't think the DUP11 was ever a supported device on VMS.
Yes, it was. See http://h71000.www7.hp.com/doc/spddecnetplusvax73.pdf
page 13 table 2. DUP wasn't added in 7.3; it would have been there all
along. This was just the first SPD I grabbed. There were also sync
line adapters for Microvax - I have one here, I think. DSW4{1,2,3}.
And QBus (DPV/DSV, BI (DMB/DSB). Gory details in the SPD.
You needed the WAN Drivers layered product, though.
> The DUP11 is supported on a VAXBI system fitted
> with a DWBUA UNIBUS adapter for VAX 8200, VAX
> 8250, VAX 8300, VAX 8300, VAX 8350, VAX 8500,
> VAX 8530, VAX 8550, VAX 8700, and VAX 8800 systems only
(Oddly, I didn't see DMC/DMR listed, but I do remember them working...)
Yes, Phase V supported DDCMP as a transport layer. No version change.
This communication may not represent my employer's views,
if any, on the matters discussed.
On 07-Jun-13 15:45, Mark Pizzolato - Info Comm wrote:
>
> I believe that the DUP11 emulation is working. It has been tested
> minimally on RSX11M+ talking to RSX11M+. Never having been a user of
> these systems I don't have enough experience to do rigorous testing.
> Anyone willing to test more rigorously is welcome.
>
> In theory, the DUP11 could work for VAX Unibus systems, however I
> don't think the DUP11 was ever a supported device on VMS. Maybe for
> DECnet Phase V, but I can't seem to find support prior to that. Even
> in the DECnet Phase V case, the DUP11 smiulation ONLY supports DDCMP
> on the wire and I don't know if that was what DECnet Phase V spoke on
> the wire... I welcome anyone with the experience to test. Contact me
> offline for specific help.
>
> The current code at github.com/simh/simh (downloadable as
> https://github.com/simh/simh/archive/master.zip) will build PDP11 and
> all the Unibus VAX simulators with DUP11 support. If DDCMP on DUP11's
> was never a supported protocol for VMS, we'll probably remove the DUP
> from the VAX simulators before things settle down.
>
> As Rob and Tim have said, the KDP is still a work in progress. The
> ultimate goal will be to have the KDP talk to other KDP's and bare
> DUP11's and the DMC11 all speaking DDCMP on the wire.
>
> The original KDP code spoke partial DDCMP on the wire (without DDCMP's
> CRC's) and as Tim mentions below, had numerous issues with some
> required OS interactions as well as correct observance of DDCMP's
> packet boundaries in the data stream.
>
> Rob's DMC11 implementation didn't speak DDCMP on the wire at all.
>
> So work is ongoing to get each of these devices to talk a common
> language and to meet OS expectations..
>
> -Mark
>
> *From:*simh-bounces at trailing-edge.com
> [mailto:simh-bounces at trailing-edge.com] *On Behalf Of *Timothe Litt
> *Sent:* Friday, June 07, 2013 11:29 AM
> *To:* simh at trailing-edge.com
> *Subject:* Re: [Simh] PDP-10 simulator with DMR/KDP support?
>
> I've decided to try my hand at building a TOPS-10 with DECnet on a
> KS10/simh. I followed a lot of the discussion of this a couple of
> months ago, but I'm not sure where it all ended. Can anybody
> point me to a copy of the PDP10 simh with the latest DMR/KDP support?
>
> Here's what I know:
>
> Rob Jarrett ported a KDP simulation to the latest emulator. It didn't
> quite work. There's a personal repo on github, but it's not worth a
> pointer.
>
> I have 2 -10s and 2 -20s configured for DECnet (and ANF-10) running
> on my desktop. (!) No 11-based ANF nodes yet.
>
> I made some progress - I had ANF-10 up for an hour or so; DECnet-10
> not at all; DECnet-20 sometimes. The KDP emulation is missing some
> commands that the OSs count on. My code isn't in the repo, yet.
>
> Mark Pizzolato has a DUP emulation that he says is mostly working on
> 11s and VMS. Rather than keep two DUP emulations, the plan was to
> split the KDP into the KMC + DUP, rather like the real hardware.
>
> I've been off line for about the past 10 daze - e-mail appears and
> disappears on my servers - the responsible party calls it an
> 'upgrade', so I'm not sure what the current state pf the KDP/DMR work is.
>
> I have tracked down the COMIOP-DUP microcode USER's documentation with
> the help of Al Kossow and Cynde Moya, and it's on bitsavers along with
> the DMR tech manuals. (Both even agree with my memory.)
>
> http://bitsavers.org/pdf/dec/unibus/AA-5670A-TC_COMM_IOP-DUP_Programming_Manual_Jan78.pdf
> and
> http://bitsavers.trailing-edge.com/pdf/dec/unibus/EK-DMR11-TM-002_Jan81.pdf;
> also
> http://bitsavers.trailing-edge.com/pdf/dec/unibus/EK-DMR11-UG-002_DMR11_Synchronous_Controller_Users_Guide_Dec80.pdf
>
> Once I catch up on e-mail, I'll see what I can do to help, depending
> on where Mark and Rob are. (They may have given up on me due to my
> on/off (mostly off) mail service. Hopefully that's fixed.)
>
> I have 2,475 e-mail messages to sort thru before I'm up-to-date...but
> should have some time this weekend. I hope.
>
>
> This communication may not represent my employer's views,
> if any, on the matters discussed.
>
> On 07-Jun-13 13:36, Bob Armstrong wrote:
>
> I've decided to try my hand at building a TOPS-10 with DECnet on
> a KS10/simh. I followed a lot of the discussion of this a couple
> of months ago, but I'm not sure where it all ended. Can anybody
> point me to a copy of the PDP10 simh with the latest DMR/KDP support?
>
> Thanks,
>
> Bob Armstrong
>
>
>
>
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