> On Jul 17, 2016, at 11:06 AM, John Forecast <j...@forecast.name> wrote: > >> ... >> I suppose so. Rumor had it that Phase I only existed on RSX, but it appears >> that there was a PDP-8 implementation as well. Phase II was implemented on >> lots of DEC systems, from TOPS-10 to RT-11 to RSTS/E. My initial >> involvement with DECnet was as the DECnet/E kernel guy, upgrading DECnet/E >> from Phase II to Phase III. >> > I worked at a customer site in Sweden which consisted of a pair of > 11/40’s running > RSX-11D and DECnet Phase I. I’m pretty sure that Phase I only ran on > 11D in the RSX > family.
I'd always heard that. But recently I found Phase I documents, which include protocol specifications of a sort, sufficient to tell that it wouldn't be compatible with Phase II and couldn't readily be made to be. (In particular, NSP works rather differently.) And that document was for a PDP-8 OS. Possibly it was built but not shipped, or designed but not built. The document has the look of r a finished product manual, though. paul