On Sat, Mar 4, 2017 at 3:09 AM, Jacob Goense <dugo@xs4all.nl> wrote:

On 2017-03-04 04:16, Warren Toomey wrote:

- these connected to real/emulated Unix systems either locally or via a
terminal server and telnet to remotely emulated systems

Getting Arpanet back up is tricky. I think only KLH10 has decent IMP
support. Not much of UNIX history runs on that.

There is the H316 emulator in simh, but its IMP-host interface would
need to be fleshed out and the corresponding host cards do not exist
yet in the simh VAX/PDP emulators.

I did a bit of the fleshing out; it can be found at:

on branch dps8m.

The 'ready' bits on the interface needs some work. The "cable" is implemented as UDP packets; probably the code should periodically send packets if the interface is enabled and the other end should keep a timeout counter to detect the other end not ready.

-- Charles