RE: Porting of spice3f5 to open source (fwd)


To ng-spice-devel@ieee.ing.uniroma1.it
From Paolo Nenzi <pnenzi@ieee.ing.uniroma1.it>
Date Thu, 25 May 2000 14:42:36 +0200 (CEST)
Delivered-To mailing list ng-spice-devel@ieee.ing.uniroma1.it
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Sorry, Newton did not replied on the list. Seems promising

Paolo

 

---------- Forwarded message ----------
Date: Thu, 25 May 2000 05:34:25 -0700
From: Richard Newton <rnewton@ic.eecs.berkeley.edu>
To: 'Paolo Nenzi' <pnenzi@ieee.ing.uniroma1.it>
Subject: RE: Porting of spice3f5 to open source


Dear Prof. Newton,

Thank you for your interest in our project. We have read the letter you
sent to the ng-spice-development mailing list and would like to ask you
something some details. 

We would like a clarification on "make the code compliant with 'Open
Source'. What exactly is required ? Adding a copyright header to each
file is easy to do. What source modification are you referring to ? 

*** Modifications are simply to make the copyright GPL. Just that.

As you may have seen on our web site, we are aiming at the development of
a GPL covered circuit simulator based on spice3, but with new features. 
In your letter it is not  clear if you are going to continue the
development of spice3f5 or simply change its license. 
How would UCB react to a split in the development tree ?

*** We plan to continue spice3 development. We deserve credit for Spice3
development. We would oppose a split in the development tree. We hope you
would contribute your changes back to the original version (with full
credit), as was implied in your original note. We would be willing to creat
a new version using your modifications. 

One note about bsim3(soi) and bsim4: our development team is working on
the devices interface to the simulator; we are planning make devices
that behave like plugins. This reduces the memory footprint of the
simulator (only really needed devices will be loaded into main memory) and
let people to use even non "Open Source" models in the open source
simulator, as now happens with thrid party modules for the Linux kernel
(see NVIDIA drivers fon XFree 4).

*** We had planned to do this also. We just do not have the developer
bandwidth right now. It is great that you are taking this on!  

Regards,
The ng-spice development team


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