On Aug 2, 2022, at 2:38 PM, Grant Taylor via
cctalk <cctalk(a)classiccmp.org> wrote:
 On 8/2/22 11:52 AM, Robert Armstrong via cctalk wrote:
  Umm...  The problem is that there are a lot more
DECnet systems than just VMS. 
 Please elaborate.
 I naively assumed that anything that was running DECnet was doing so to be able to
communicate with a DEC system / OS.
 It sounds like you are aware of places where DECnet is being used that doesn't
involve DEC system(s) / OS(s). 
 I think the context was TCP as an alternative transport, given the fading DECnet support
in Linux.  And yes, that's an option for Unix and VMS, but not for a number of other
DEC operating systems that have no TCP option.
 Hm, I'm reminded that someone did a TCP add-on to RSTS, that would be interesting to
examine.  A tricky piece of work, given that RSTS was not at all designed to be
customer-extensible (unlike RSX and RT-11).  Not even customer device drivers, let alone
anything much harder, like a whole network stack. 
 
I know there is a (not generally available) TCP/IP for RSX but I never
saw or even heard of one for RSTS.
bill