This is exciting. I will try this out.

I have been wanting to set up an X25 system for ages, mainly because we used X25 to link computers on the UK JANET network back in the 1980s when I was a manager of a VAXcluster. We ran DECnet over that X25 link as well as other protocols.

Do you know of any public domain software that simulates an X25 network that it might be possible to use to connect two or more simulated VAXen running P.S.I.? The ideas I have found on the internet never seem to have reached the stage of implementation.

Cheers

Peter Allan

On Thu, 18 Aug 2022 at 15:12, Trevor Warwick <twarwick@gmail.com> wrote:

I recently added HDLC framing support to the DUP11 and DPV11 devices in open_simh. This has only so far been tested with DECnet-Plus on VMS.

I wrote up another couple of examples, showing how to use HDLC as a DECnet datalink, and also how to try a basic configuration of VAX P.S.I. for X.25 communication.

They're here: https://notlikethatlikethis.blogspot.com/

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