[HECnet] Automatic Orderly Shutdown of Emulated VAX/VMS System in SIMH

[Dave McGuire]

  I'm going to set up a VM and give this a try this weekend.  Thank you
SO much for working on this.

             -Dave

On 06/11/2018 05:10 PM, Erik Olofsen wrote:
> Please see http://rullf2.xs4all.nl/decnet/
> 
> 
> On Mon, Jun 11, 2018 at 02:58:11PM -0400, John Forecast wrote:
>>
>>> On Jun 11, 2018, at 12:17 PM, Mark J. Blair <nf6x at nf6x.net> wrote:
>>>
>>> Thanks for all of the suggestions. They give me some ideas to work with.
>>>
>>> I particularly like the idea of using dntask on the Linux side, but unfortunately that one breaks the "If you already have a working DECnet network..." requirement. Unless something has changed more recently than I am aware of, the DECnet support in Linux has been broken for quite a long time. I had to install a very old distribution on the Linux VM that I set up for doing some DECnet stuff, but this server would be running a very recent distribution. It would be very nice if the Linux DECnet code started getting attention again and could be updated to work in the latest kernels, but that's not a task that I can take on at this time. 
>>>
>>> Alternately, it would be neat if there was a DECnet client implementation that could run entirely in user space. Is there anything like that which I'm not aware of?
>>>
>>> I think that the suggestions involving kludging something together to shut down the emulated system via one of its terminal ports should give me something to work with. I'll need to experiment to see if I can come up with something that doesn't let any random user on (or off!) the system to trivially shut it down.
>>>
>>> Hmm, I should look at the SIMH source to see if I can come up with a clean way to let SIMH trigger the shutdown when it receives a SIGHUP.
>>>
>>> -- 
>>> Mark J. Blair <nf6x at nf6x.net>
>>> http://www.nf6x.net/
>>>
>>
>> 	Erik Olofson (e.olofsen at xs4all.nl <mailto:e.olofsen at xs4all.nl>) has a version of the DECnet code (both kernel and utilities) code updated for a recent Linux kernel - I have it running on a Raspberry Pi 3B+ running Stretch (kernel 4.14.34-v7+). I recently submitted a number of patches (CTERM and DAP) to allow it to interoperate with TOPS-10 but I don???t know if he???s made those available yet.
>>
>>   John.
>>


-- 
Dave McGuire, AK4HZ
New Kensington, PA