11 Dec
2018
11 Dec
'18
10:57 p.m.
PS:
IIRC, outbound packets are copied into kernel buffers
IDRC; according to the documentation, outbound packets are DMA'd directly from
user memory. I have yet to read the code to verify this.
we must have added PTY's of some sort
There is indeed a PTY driver; it has comments from BBN'ers who edited it, so
perhaps we got it from BBN.
I don't remember which one SMTP used.
The 'simple' TCP.
The whole thing worked _really_ well. Alas, I
don't think anyone else
picked up on it.
So I found a long list of people we sent tapes to. Oh well....
The kernel code is not that large, it should even run
on a /40, without
overlays (although the number of disk buffers would probably get hit).
Well, maybe... Here is the output of 'size' on the last Unix image for that
machine:
40560+3098+44594
It was a /45, so split I/D (no overlays, though). How much could be trimmed
out of that, I'm not sure.
Noel
11 Dec
11 Dec
11:01 p.m.
New subject: 2.9bsd with networking on 18-bit possible?
Too bad Keith Bostic isn't on this list. IIRC, he did a lot of
the PDP-11 Unix integration work.
Jon
12 Dec
12 Dec
12:03 a.m.
New subject: 2.9bsd with networking on 18-bit possible?
On Tue, Dec 11, 2018 at 11:57 AM Noel Chiappa <jnc(a)mercury.lcs.mit.edu>
wrote:
Hmm, I could be mis remembering, but IIRC the original PTY driver goes back
to the Rand and/or UofI for the NCP. I suspect BBN got it from the Bruce
Borden's Rand distribution tape which was 74 or 75, I think. Named Piped
were definiately a Rand-ism (they were originally called 'Rand Pipes') and
were on that tape along with their Editor.
It's too bad Greg is not here to ask. My memory and Noel may know by the
IMP release dates, is that Rand was on connected before UofI. But there
were issues and somethings were not 100% until the UofI NCP; which was the
first really complete NCP for UNIX. I'm pretty sure that Greg's version
went back to Bruce, as well as to BBN and Harvard and I would have assumes
MIT also.
I don't remember if the original Rand Pipes and PTYs were 5th or 6th
edition originally. I'm fairly sure, UofI's NCP was 6th edition but think
that Rand goes back to at least 5th if not 4th.
ᐧ
we must have
added PTY's of some sort
There is indeed a PTY driver; it has comments from BBN'ers who edited it,
so
perhaps we got it from BBN.
2192
days inactive
2192
days old
2 comments
3 participants
participants (3)
-
Clem Cole -
jnc＠mercury.lcs.mit.edu -
Jon Forrest