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Reformatted to 80 columns and modified cider/xspice description.

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pnenzi 18 years ago
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      COPYING

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@ -1,3 +1,4 @@
12345678901234567890123456789012345678901234567890123456789012345678901234567890
Ngspice rework-18 Ngspice rework-18
Copyright (c) 2008, Copyright (c) 2008,
All rights reserved. All rights reserved.
@ -7,57 +8,60 @@ Foreword:
Spice's name was originally chosen at the University of California, Berkeley. Spice's name was originally chosen at the University of California, Berkeley.
As it is the basis of almost all circuit simulators, the major part of the As it is the basis of almost all circuit simulators, the major part of the
analogue and mixed signals simulation's code is designed to fit with it. analogue and mixed signals simulation's code is designed to fit with it.
The *spices (generic name for its forks) are heterogeneous in many points due to
the work of researchers, electronic designers, software editors, etc.
The Ngspice team tries to collect work from the different sources and contribute
new functionalities. Thus, the material we manipulate is heterogeneous in
licenses. Keeping the licenses as is, or re-licensing is a constant debate at
ngspice. For release 18, we choose not to relicense.
The *spices (generic name for its forks) are heterogeneous in many points due
to the work of researchers, electronic designers, software editors, etc.
The Ngspice team tries to collect work from the different sources and
contribute new functionalities. Thus, the material we manipulate is
heterogeneous in licenses. Keeping the licenses as is, or re-licensing is a
constant debate at ngspice. For release 18, we choose not to relicense.
Copyleft is a fundamental question in FOSS development. The choice of a Copyleft is a fundamental question in FOSS development. The choice of a
copylefted contribution, or a non copylefted contribution is an important choice
that should be respected. Ngspice branch as a whole will not be covered by a
specific license. The Ngspice team wants to encourage contributions to ngspice.
We let each new developper choose its position regarding copyleft, as we respect
the position of the former developpers. In order to keep things clear ngspice
team proposes to follow the following guidelines:
copylefted contribution, or a non copylefted contribution is an important
choice that should be respected. Ngspice branch as a whole will not be covered
by a specific license. The Ngspice team wants to encourage contributions to
ngspice. We let each new developper choose its position regarding copyleft,
as we respect the position of the former developpers. In order to keep things
clear ngspice team proposes to follow the following guidelines:
Each piece of code should be kept under its original contributor's license. Each piece of code should be kept under its original contributor's license.
As for any project, modifications made in sources covered by a less restrictive
license can be covered by a more restrictive license, such as GPL. We do not
encourage it.
As for any project, modifications made in sources covered by a less
restrictive license can be covered by a more restrictive license, such as
GPL. We do not encourage it.
If you feel to add code in a file under a different license than the rest of If you feel to add code in a file under a different license than the rest of
the file, please use comments to mark the boundaries of the modification, and the file, please use comments to mark the boundaries of the modification, and
edit the comments at the begining of the file with correct license and copyright
information.
edit the comments at the begining of the file with correct license and
copyright information.
We encourage restrictive licenses to be chosen only for new functionalities, We encourage restrictive licenses to be chosen only for new functionalities,
written in distinct files, leading to distinct libraries that links depending on
a specific configure flag.
written in distinct files, leading to distinct libraries that links depending
on a specific configure flag.
We encourage non proliferation of licenses (e.g. choosing either GPL, LGPL or We encourage non proliferation of licenses (e.g. choosing either GPL, LGPL or
new BSD). new BSD).
This heterogenous license status makes it difficult to know which license applies.
Please take care of knowing which license aplies to the code you are editing, or
conveying and not to commit license infringements, especially to GPL and LGPL
which are quite restrictive.
This heterogenous license status makes it difficult to know which license
applies. Please take care of knowing which license aplies to the code you are
editing, or conveying and not to commit license infringements, especially to
GPL and LGPL which are quite restrictive.
On 2007, July 17th spice 3f5 changed from its original license to the new BSD On 2007, July 17th spice 3f5 changed from its original license to the new BSD
license. (http://embedded.eecs.berkeley.edu/pubs/downloads/spice/index.htm) license. (http://embedded.eecs.berkeley.edu/pubs/downloads/spice/index.htm)
On 2008, December 1st, tclspice changes license from GPL to LGPLv2, in accordance
with Multigig Ltd, the copyright holder.
On 2008, December 1st, tclspice changes license from GPL to LGPLv2, in
accordance with Multigig Ltd, the copyright holder.
The following table is just a reminder on license status, please don't rely on it:
The following table is just a reminder on license status, please don't rely
on it:
Author License Notes Author License Notes
numparam Georg Post LGPL Applies to the code in frontend/numparam
adms Laurent Lemaitre LGPL Applies to scripts in the spicelib/dev/adms
numparam Georg Post LGPL Applies to the code in
frontend/numparam
adms Laurent Lemaitre LGPL Applies to scripts in the
spicelib/dev/adms
tclspice Stefan Jones LGPL TCL integration tclspice Stefan Jones LGPL TCL integration
cider U. of California Old BSD Device modeling
xspice Georgia Tech. Public D Mixed level, Mixed signals
cider U. of California Old BSD Device level simulator
xspice Georgia Tech. Public D Mixed signals
spice U. of California New BSD Analog circuit simulation spice U. of California New BSD Analog circuit simulation
@ -598,8 +602,8 @@ ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH THE USER.
SHOULD THE PROGRAM PROVE DEFECTIVE, THE USER ASSUMES THE ENTIRE COST OF ALL SHOULD THE PROGRAM PROVE DEFECTIVE, THE USER ASSUMES THE ENTIRE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION. IN NO EVENT WILL THE GEORGIA TECH NECESSARY SERVICING, REPAIR OR CORRECTION. IN NO EVENT WILL THE GEORGIA TECH
RESEARCH CORPORATION, THE GEORGIA INSTITUTE OF TECHNOLOGY, AND/OR OTHER PARTIES RESEARCH CORPORATION, THE GEORGIA INSTITUTE OF TECHNOLOGY, AND/OR OTHER PARTIES
PROVIDING THE PROGRAMS BELOW BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY
TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
TO OPERATE WITH ANY OTHER PROGRAMS).
PROVIDING THE PROGRAMS BELOW BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS).
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