[Simh] DECnet for TOPS-10

[Timothe Litt]

> 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.

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

> 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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