11 Sep
2022
11 Sep
'22
5:27 p.m.
On Sep 10, 2022, at 9:10 PM, Dave McGuire
<mcguire(a)neurotica.com> wrote:
On 9/10/22 21:08, Johnny Billquist wrote:
Certainly. If you just have an RSX routing node with both interfaces, you will have the
capability of connecting both sides.
That sounds like an interesting solution. I've never routed/bridged DECnet in that
way.
Of course another interesting option would be for pyDECnet to implement DDCMP, and let
some random RPi or virtual machine bridge the KS' DECnet to the rest of the world.
Are you talking a real KS or an emulated one?
If a real one, you'd need to connect to a router that implement DDCMP over a
synchronous link. A PDP11 with a DMC11 (DMV if it's Qbus) or RSX system with a DUP
could do the job. With PyDECnet, you can do it if you built yourself one of my DDCMP sync
adapters, which is a small USB device that PyDECnet can talk to and use to speak DDCMP on
a sync link. For that matter, SIMH supports that adapter as well.
paul
The KMC/DUP speaks "DDCMP" that is not
spoken by a cisco router sync interface.
You need for example to run the sync line from the 2020 to a LSI-11 with
RSX (as you can get help from Johnny with rsx..) and a sync and Ethernet
interface in the 11. (Or any PDP11/VAX with a sync interface.)
(I'm an old hand at RSX)
So we could use a PDP-11 with a KMC11 to bridge DECnet over DDCMP to Ethernet?