[Simh] DECnet for TOPS-10

[Rob Jarratt]

> -----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.
>