On 2015-10-09 17:57, John Forecast wrote:
On Oct 9, 2015, at 11:01 AM, Paul Koning <[email protected]> wrote:
On Oct 9, 2015, at 9:38 AM, Johnny Billquist <[email protected]> wrote:
...
Phase II use NSP v3.1 so that’s probably another indication that it’s a
Phase I product.
John, maybe you can clear some things up for me.
Looking at the Wikipedia article about DECnet, it claims that phase I was
simply between two nodes. No larger than that. And in addition was RSX-11 only.
And it was 1974.
It wouldn't be at all surprising if the information about Phase I were
inaccurate given its undocumented status.
I tend to agree with Paul here. I’m also pretty sure that it was
RSX-11D only as well. The
systems I used were moved into a newly built machine room sometime
around Aug-Sep
1976 and the was when we installed DECnet. As to the limit of two nodes
I have no
direct knowledge but in mid-1977, Volvo were using a DV-11 in their
Phase I network.
An 8-line multiplexor which took up 9 backplane slots would seem to be
overkill for a
2 node network.
Yes, two nodes seems like a weird limitation, which don't really make sense.
Phase II says multiple implementations on different systems, and a max of 32
nodes. Also supposedly added task-to-task programming interfaces. And
supposedly 1975.
Phase I definitely had task-to-task interfaces along with TLK/LSN and
file transfer (PLE
seems to ring a bell as the NFT equivalent). The timeframe here seems
to be off. I moved
to the US in Jan 1977 to be the project leader for DECnet-11D/IAS. The
original plan
called for a 9-month development cycle but it ended up more like 18+
months, so mid-1978
would be more accurate.
File transfer was not implemented in RTS-8. I would suspect not
feasible, or else not useful or something. TLK/LSN and task to task
communication is all the manual mentions. I'll try and find any other
sources for any dates.
Johnny
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