Re: decnet versions

[Paul Koning <pkoning@xedia.com>]

>>>>> "Zane" == Zane H Healy <healyzh@aracnet.com> writes:

 Zane> I got the following info from John Wilson on the Classic
 Zane> Computer mailing list:
 >> Someone was just telling me about this recently.  I forget the
 >> details, but apparently CTERM and LAT covering the whole spectrum
 >> of network terminal protocols is a VMS-only phenomenon, the PDP-11
 >> OSes are utter chaos with each one having its own TTY protocol(s).
 >> I could have it wrong but it sounds like CTERM isn't going to do
 >> the trick.

I suspect it was me he got that from, we talk a lot about
retrocomputing... :-)

 Zane> So it sounds like even if it will talk to RSTS/E for example
 Zane> (and unfortunatly I'm not sure anyone on the list has access to
 Zane> a RSTS/E system at the moment), that it still wouldn't be able
 Zane> to talk to RSX-11M or RT-11 systems.  Although I have gotten
 Zane> the impression RT-11 wouldn't really matter as DECnet is no
 Zane> longer available for DECnet, and you can get a free TCP/IP
 Zane> implementation for RT-11.

I don't believe RT ever had a network terminal daemon.  That would
make sense, after all RT is a single user (single terminal) system.
There's no place for such a thing to hook in.

On the other hand, the various multi-user systems were covered.  RTST, 
RSX, VMS, and TOPS-20 have pre-Cterm protocols.  Hm.  I know Ultrix
was supported too, and it would have to be one of those four (since
those are the four DECnet/E knows about, and it worked...) but I don't 
know which one.

So yes, to connect from Linux to a non-Cterm DECnet system, you have
to implement at least 3 of those 4 protocols.  (Cterm will take care
of VMS and perhaps of Ultrix too, not sure.)

	paul

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