[ih] Recently restored and a small ARPANET was run using simulated IMP hardware.

[Lars Brinkhoff]

Geoff Goodfellow wrote:
> jack, you've raised my curiosity with respect to:
>
> ... There
> *is* ARPANET IMP software which was recently restored and a small
> ARPANET was run using simulated IMP hardware.
>
> Who/What/When/Where/Why?

I believe this is the software:
https://www.walden-family.com/impcode/

And here's information about the simulation:
https://github.com/simh/simh/blob/master/H316/tests/00readme.txt