Cross-pollination Fwd: gEDA: Need help -- simulator backend project


To ng-spice@ieee.ing.uniroma1.it, pnenzi@ieee.ing.uniroma1.it
From "James Swonger" <jwsrh@hotmail.com>
Date Wed, 15 Mar 2000 07:27:41 PST
Delivered-To mailing list ng-spice@ieee.ing.uniroma1.it
Mailing-List contact ng-spice-help@ieee.ing.uniroma1.it; run by ezmlm
Reply-To ng-spice@ieee.ing.uniroma1.it

I lurk on two mailing lists which both relate to GPL'd
design tools. I am cross-posting two messages, one from
each, to see if there can be a confluence of effort in
the analog simulation area. It seems like ACS has some
significant pros (development active, modern language,
GPL) but some holes (missing some significant device
intrinsic models). On the SPICE3 side, we have a well-
known code base and large complement of models, but an
institution (Berkely) unwilling to GPL the code or
continue development.

At this juncture I think it is appropriate and
beneficial for the two efforts to take stock and
see if the end is better served by combining effort.


>From: Al Davis <aldavis@ieee.org>
>Reply-To: geda-dev@geda.seul.org
>To: geda-dev@geda.seul.org
>Subject: gEDA: Need help -- simulator backend project
>Date: Wed, 15 Mar 2000 00:27:24 -0800
>
>I am looking for someone to take on a project that will
>present simulation data in a nice way, similar to
>(hopefully better than) the post-processor that comes with
>H-Spice.
>
>I have in mind something that would act as an interface to
>ACS, and display waveforms.  Ideally, it would also allow
>them to be manipulated, overlaid, stored, etc. ..
>
>I do not see schematic entry as part of this project,
>because we have that already, but tighter integration would
>be a good thing.
>
>There exist programs like gnuplot and gwave, but I am
>looking for something that manipulates like gnuplot, while
>appearing to be tightly coupled to the simulator, hopefully
>showing "marching waveforms" (waves that are drawn as the
>simulation runs.
>
>I am hoping for someone who can take on this project, and
>release it as part of gEDA under GPL.
>
>I do not intend to add graphics to ACS, because I think it
>is better for me to work on the scientific part of the
>simulator.  ACS will continue to be a text-based
>interactive simulator, which could run in client-server
>controlled by this proposed project.  I do plan to make it
>interface better to plot packages, avoiding the need to
>save the results in a file and run the plot package
>explicitly.
>
>As to future enhancements to ACS ...  It is getting better,
>and I believe that in less than a year it will surpass
>Spice in most of the ways that are important to circuit
>designers.  It already has surpassed it in some ways, but
>there are some key features missing.  The biggest effort
>now is to improve the models.
>
>Volunteers?????  (for the backend)
>
>
>al.

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