[ih] NCP and TCP implementations

[Brian E Carpenter]

If that doesn't work, let me know as I am in touch with David Bates,
who worked with Peter and Adrian on traffic minitoring. Their paper says:

"The PDP-9 used for this work (known as
PDP-9B) is connected to the TIP as a Host. It has
32K words of core (18 bit), a 256K disk and various
other peripherals."
doi.org/10.1145/1499799.1499882

Regards
   Brian Carpenter

On 25-Jul-20 22:57, Vint Cerf via Internet-history wrote:
> I sent a note to Adrian Stokes.
> 
> v
> 
> 
> On Sat, Jul 25, 2020 at 6:41 AM Scott O. Bradner <sob at sobco.com> wrote:
> 
>> I think it was assembler if it is the version I used for a while
>>
>> Scott
>>
>>
>>> On Jul 25, 2020, at 6:38 AM, Vint Cerf via Internet-history <
>> internet-history at elists.isoc.org> wrote:
>>>
>>> Peter Kirstein's lab did an implementation for a PDP-9 but I don't recall
>>> whether it was in a high level language or assembler. Adrian Stokes might
>>> know.
>>>
>>> v
>>>
>>>
>>> On Sat, Jul 25, 2020 at 5:00 AM Christian de Larrinaga via
>> Internet-history
>>> <internet-history at elists.isoc.org> wrote:
>>>
>>>> I didn't know about the BCPL coding for Tenex. I recall Prof Elliot at
>>>> Cambridge asking if I'd come and work for his company which sold a BCPL
>>>> compiler as I'd established BCPL with a number of developers who started
>>>> using Alto and later SiriusB micros in around 1981/2.
>>>>
>>>> C
>>>>
>>>> On 24/07/2020 18:30, Dan Lynch via Internet-history wrote:
>>>>> The original TCP for Tenex was written in BCPL in user space (rather
>>>> than in the underlying system space) and once it was reasonably stable
>> it
>>>> was converted to Macro-10 so it could be folded into the system. I
>> believe
>>>> Bill Plummer (RIP) did all that work. I helped him in the debugging
>> tasks
>>>> while I was at SRI.
>>>>>
>>>>> Dan
>>>>>
>>>>> Cell 650-776-7313 <(650)%20776-7313> <(650)%20776-7313>
>>>>>
>>>>>> On Jul 21, 2020, at 6:43 PM, Noel Chiappa via Internet-history <
>>>> internet-history at elists.isoc.org> wrote:
>>>>>>
>>>>>> 
>>>>>>> On 20.03.10, vinton cerf via Internet-history wrote:
>>>>>>>
>>>>>>> Steve Kirsch asks in what languages NCP and TCP were written.
>>>>>>> ...
>>>>>>> Another version was written for PDP-11/23 by Jim Mathis but not clear
>>>> in
>>>>>>> what language.
>>>>>> I think I answered this when it was first posted, but I now have some
>>>>>> additional data (I think).
>>>>>>
>>>>>> It was written in MACRO-11; PDP-11 assembler with a powerful macro
>>>> capability.
>>>>>> After some poking around in a copy of the file system of the v6 Unix
>>>>>> timesharing system of the CSR group at MIT, which has all sort of
>>>> goodies in
>>>>>> it (including a copy of the NCP for v6 Unix), I have recovered a copy
>>>> of that
>>>>>> TCP, if anyone wants it.
>>>>>>
>>>>>> I'm not sure if it was done for the -11/23; we got MOS (Jim's OS, and
>>>> other
>>>>>> software, including the TCP and an early version of the Port Expander
>>>> codea)
>>>>>> early on, and I seem to recall that the -11/23 didn't come out until
>>>> after we
>>>>>> had MOS. I'd have to look up exactly when the KDF11 was released to be
>>>> sure, if
>>>>>> it's important. MOS had conditionals to work on the -11/03 and also
>> the
>>>> -11/20
>>>>>> and -11/40 (binary for the -11/40 will run on the /23). I think the
>>>> TCP, etc
>>>>>> were written for the -11/03.
>>>>>>
>>>>>>> Dave Clark did one for IBM PC (assembly language/??)
>>>>>> No, but Dave did I think at least two others; possibly one in BCPL?
>> for
>>>> the
>>>>>> Tripos operating system from Cambridge, and definitely one in BCPL for
>>>> the
>>>>>> Alto (MIT got several as a donation from Xerox). Before the latter, he
>>>> also
>>>>>> worked on the Multics one (in PL/I) although someone else whose name
>> my
>>>>>> failing brain can't remember at the moment worked on that before him.
>>>> The Alto
>>>>>> one was later translated into C by Larry Allen for the CSR v6 Unix,
>>>> which I
>>>>>> used as the base on one I did for Bridge.
>>>>>>
>>>>>> The one for the PC was done by John Romkey and David Bridgham, in C;
>>>> the CSR
>>>>>> machine dump has that one too, if anyone wants it.
>>>>>>
>>>>>>    Noel
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> 
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