[Simh] networking support

[Mark Pizzolato]

On Friday, March 18, 2016 at 9:40 AM, Johnny Eriksson wrote:
> Mark Pizzolato <Mark at infocomm.com> wrote:
> 
> > Well, the DEUNA/DELUA was originally added to the PDP10 simulator due
> > to rumors about there being software support for the DEUNA on the KS10
> > processor. Subsequent information made it clear that there was
> > actually never any such Support, so it was removed from the PDP10
> > simulator in simh 3.9
> 
> I played around with a KS10 with a DEUNA or DELUA installed in the late
> 1990's, writing the beginnings of an IP stack for it.  With the combination of
> problems keeping that machine up and running and the release of
> simh/pdp10 I decided to give it a try, and late 2001 I wrote the *INITIAL*
> deuna/delua simulation so that I could continue with the IP stack.
> 
> There are many reasons why the stack is still not "quite ready", but I have not
> given up, au contrare.
> 
> Currently (since I have also started running KL-based emulations) I have
> decided to rename my Tops-10 driver to unxser.mac, and started on doing
> i4eint.mac to interface with the "normal" Tops-10 ethernet layer.  This way
> the stack will be possible to run on both KL and KS based systems.  Using DEC
> ethernet on both, if Tim's unaser comes to life, giving the KS DECnet and LAT
> over ethernet as well...
> 
> In my opinion the simh/pdp10 should include the deuna/deula, with the
> default being disabled.  Not totally excluded as it is now.

Well, someone else had asked for the DEUNA/DELUA to be included again, so 
it actually was part of the build and visible in the simulator,  However, the glue 
logic which actually connected it to one of the potential network transport 
available was not included in the PDP10 build.  It now is and as requested it 
is disabled by default.

- Mark