[Simh] DECnet for TOPS-10

[Johnny Billquist]

On 2013-04-14 00:39, Timothe Litt wrote:
>> That sounds like we can get DECnet on TOPS-20 on SIMH, if so that
>> would be
>> really great!
> Yes.
>> Which phase(s) does TOPS-20 DECnet support on the KS?
> Phase III.  Because it was so large, Phase IV used extended sections
> (addressing), which the KS doesn't support.  I used slight-of-hand to
> make Phase IV fit into TOPS-10 on the KS10.

Did I remember wrong in that I thought I had seen something from MRC in 
the past where he said he had managed to get phase IV for TOPS-20 
running on a KS?

> But Phase III will connect to a Phase IV node, so TOPS-20 can
> participate in a modern network.

More or less. There are some restrictions.

	Johnny

>> Adding DMR support was on my list, but I haven't done it yet. I'll see
>> if I
>> can get the KMC/DUP code in and then do DMR, but it may be a while
>> before I
>> get time.
> That would be super.  It looked like your code has some hooks for DMR,
> but is incomplete.  Given that you don't actually do DDCMP, the
> differences should be small.
>
> --
> This communication may not represent my employer's views,
> if any, on the matters discussed.
>
> On 13-Apr-13 18:25, Rob Jarratt wrote:
>>
>>> -----Original Message-----
>>> From: Timothe Litt [mailto:litt at ieee.org]
>>> Sent: 13 April 2013 22:40
>>> To: r.jarratt at computer.org
>>> Cc: Rob Jarratt; 'Johnny Eriksson'; simh at trailing-edge.com
>>> Subject: Re: [Simh] DECnet for TOPS-10
>>>
>>> On 13-Apr-13 17:00, Rob Jarratt wrote:
>>>> I wrote support for the KMC/DUP combo a long time ago, for simh v2.9.
>>>>
>>>> Works just fine, both for ANF and DECnet.  Sources are (still) at
>>>> ftp://ftp.stacken.kth.se/pub/pdp10/v29upd if anyone is interested.
>>>>
>>>> I do not have any system up at the moment, due to a combination of HW
>>>> problems and lack of time.
>>>>
>>>> --Johnny
>>>>
>>> If KDP (KMC/DUP) still works, it should be integrated into the PDP10
>>> simulator.  TOPS-10 (ANF-10 and DECnet) supports the device, and TOPS-20
>>> (DECnet) supports it.  Both on the KS10.
>>
>> That sounds like we can get DECnet on TOPS-20 on SIMH, if so that
>> would be
>> really great!
>>
>>
>>>> It went into the PDP10 emulation for a while but was later
>>>> removed when we were informed that it would have represented an
>>> impossible
>>>> configuration as the DMC11 would have been in the PDP11 front end.
>>> Whoever provided that information was correct for the DMC, but not for
>>> the DMR.
>>>
>>> For the KL, yes, the DECnet serial line adapters were in the PDP11 front
>>> end.  Ethernet was on an internal channel.
>>>
>>> If the DMC can be configured as a DMR, it should go into the PDP10
>>> simulator.
>>
>>
>> Adding DMR support was on my list, but I haven't done it yet. I'll see
>> if I
>> can get the KMC/DUP code in and then do DMR, but it may be a while
>> before I
>> get time.
>>
>>
>>
>>
>> As I said, I wrote a KS10 (Unibus) driver for the DMR on
>>> TOPS10, which is in the distributed OS sources.  The DMC is useless on
>>> the KS10.  As I noted, the DMR uses fixed addresses in TOPS-10, not the
>>> usual Unibus floating addresses.
>>>
>>> Either device would allow TOPS-10 networking to work under simh. TOPS-10
>>> can be configured for either or both devices.  TOPS-10 DECnet will work
>>> as either a Phase III or Phase IV end-node on the KS10.  (I did the
>>> Phase IV implementation for the KS.)
>>
>> Which phase(s) does TOPS-20 DECnet support on the KS?
>>
>>
>>> I was a developer for TOPS-10, and supported TOPS-20 (among other
>>> things), so this is authoritative.
>>>
>>> This communication may not represent my employer's views,
>>> if any, on the matters discussed.
>>>
>
>
>
>
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-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol