[Simh] [SimH] Networking support

[Paul Koning]

> On Mar 12, 2016, at 11:20 AM, Bob Supnik <bob at supnik.org> wrote:
> 
> ...
> A number of systems of the early 70s (including the CDC 6600 and the XDS Sigma) had one-off interfaces to ARPAnet, using specialized IMPs, but the implementations are lost.

CDC 60-bit mainframes also had a variety of communications front ends.  One is the 2660, which provided terminal interfacing as well as some other stuff (X.25 I think).  There's a partial emulation for that in the emulator DtCyber.  The other is the CDCNET front end processor, which is a lot more complex and not emulated anywhere as far as I know.  That one implemented TCP/IP including Ethernet, as well as OSI networking protocols.  I wonder if it would be feasible to create a CDCNET emulation.  That certainly would not be easy; it's yet another full computer, pretty much.

	paul