[Simh] [SimH] Networking support

Cory Smelosky b4 at gewt.net
Sun Mar 13 05:49:16 EDT 2016


I have found sources for the BBN stacks I believe. Could not figure out how to configure it and SIMH's emulation only speaks one protocol.

Sent from my iPhone

> On Mar 12, 2016, at 14:33, Henry Bent <henry.r.bent at gmail.com> wrote:
> 
>> On 12 March 2016 at 17:09, Bill Cunningham <billcun at suddenlink.net> wrote:
>>  
>> ----- Original Message -----
>> From: Clem Cole
>> To: Bill Cunningham
>> Cc: SIMH
>> Sent: Saturday, March 12, 2016 3:31 PM
>> Subject: Re: [Simh] [SimH] Networking support
>> 
>> Bill,
>> 
>> You probably need to date things a little and get a some perspective of where a few of us are coming.   Just to set a few lines in the sand.  While 3Mb/s "xerox" ethernet has been around for about 5 years, the DEC/Intel/Xerox Ethernet 10Mb/s spec was published Sep 30, 1980.   Per RFC 801, Arpanet was not officially schedule to switch from the old NCP to IP until Jan 1, 1983 (although a number of folks like me had been working with what would become IP/TCP for 3-4 years before that). 
>>  
>>     Oh Wow. I have always been told Jan 1st 1981 and they went from "Link Control Protocol" to TCP/IP. Must've been wrong then somebody was.
>>  
>> [...]
> Looking over RFC 801, it mentions a number of TCP/IP implementations.  Does anyone know if source has survived for the BBN ones for Unix v6 and 4.1BSD?  Or the DCEC one, which I've never heard about?  I'm very interested in bringing up TCP/IP support on historic versions of Unix.  I have both ARP and non-ARP versions of 4.1C BSD running with a backported DEUNA driver, but these would be even older than that.
> 
> Are there any plans to support the PDP-11 IMP interface boards in SIMH, which would presumably then talk to the h316 simulator?
> 
> -Henry 
> 
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