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Prepare for ngspice-39

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Holger Vogt 2023-01-24 16:25:11 +01:00
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AUTHORS
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@c This file will be processed with texinfo.
ngspice authors
Spice was originally written at The University of California at Berkeley (USA).
Since then, there have been many people working on the software, most of them

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COPYING
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Ngspice Licensing
Copyright (c) 2022 by ngspice team
Copyright (c) 2023 by ngspice team
All rights reserved.
license for this document: CC-BY-SA v4.0

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DEVICES
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13. Verilog-A models
Configuring ngspice with ADMS (see Readme.adms) following
devices are available:
ngspice inherits the OSDI interface for compiled Verilog-A models
OpenVAF from https://openvaf.semimod.de/ is required to compile
LRM2.x-conforming Verilog-A models into shared libraries which
may be loaded into ngspice dynamically at run-time.
13.1 EKV MOS Model
The following models have been tested, example netlists are available:
Ver: 2.6
Level: 44
Dir: devices/adms/ekv
Status: TO BE TESTED
EKV version based on a contribution of Ivan Riis Nielsen 11/2006
Web site at: https://www.epfl.ch/labs/iclab/ekv/model/
(The model from https://github.com/ekv26/model is not compatible
to the current ngspice adms implementation)
13.1 BSIMBULK 107
13.2 BSIM-CMG
13.3 HICUM L0
13.4 ASM-HEMT
13.5 VBIC
13.6 MEXTRAM 504/505
13.7 PSP 103.8
13.8 r2_cmc
More may be made available, user compiled models are possible as well
(See ngspice manual, chapter 13).
13.2 PSP MOS Model 102
Ver: 102.1
Level: 45
Dir: devices/adms/psp102
Status: TO BE TESTED
Philips SimKit 2.5.
13.3 PSP MOS Model 103
Ver: 103.1
Level: 69
Dir: devices/adms/psp103
Status: TO BE TESTED
Philips SimKit 2.5.
13.4 HICUM0 Bipolar Model
Ver: Level_0 Version_1.12
Level: 7
Dir: devices/adms/hicum0
Status: TO BE TESTED
A simplified version of HICUM Level2 model for BJT
Web site at: http://www.iee.et.tu-dresden.de/iee/eb/hic_new
13.5 Mextram Bipolar Model
Ver: 504.6.1
Level: 6
Dir: devices/adms/mextram
Status: TO BE TESTED
Web site at: http://mextram.ewi.tudelft.nl/ and http://mextram.sourceforge.net/
14. XSpice code models, see ngspice manual chapt. 12
14. XSpice code models
more than 100 models are available, please see ngspice manual chapt. 12
15. Digital Building Blocks (U instances)
U instances are digital primitives which may be used (in proper combination) to
model digital devices, e.g. from the 74xx or 40xx families. ngspice maps them
onto XSPICE models, which allows a fast event based simulation.
U instances are digital primitives which may be used (in proper combination) to
model digital devices, e.g. from the 74xx or 40xx families. ngspice maps them
onto XSPICE models, which allows a fast event based simulation. Please see the
ngspice manual, chapter 14.

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FAQ
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Ngspice F.A.Q.Version 2.8 (ngspice-38 release)
Ngspice F.A.Q.Version 2.9 (ngspice-39 release)
Maintained by Holger Vogt
Last update: Oct 23 2022
Last update: Jan 24 2023
This document contains the Frequently Asked Questions (and Answers)
for ngspice project.
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capabilities) and user interface are other goals.
1.6 What you are going to do?
1.6 What are you going to do?
An official roadmap for ngspice was never drawn. Contributions made by
developers drive ngspice development and the roadmap is built day by
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+ Compact models: The interest in using ngspice is intimately connected
to the available models. To provide the latest models available for
active and passive devices is a fundamental goal of the project. In
this direction we are integrating ADMS model compiler into ngspice.
this direction we are integrating OSDI interface into ngspice for
reading OpenVAF compiled Verilog-A compact models.
+ Documentation: Commercial simulators come with very good manuals
containing tutorials, description of models equations, example of
use, suggestions, etc. Spice came with little documentation. The
Spice3f manual, available on the Internet has been used as the basis
for the new manual. It will be constantly improved during ngspice
development and integrated with the documentation accompanying Xspice
and Cider. The ngspice manual today contains description of all
for the ngspice manual. It will be constantly improved during ngspice
development. The ngspice manual today contains description of all
features ngspice is offering. It is however not a tutorial of ngspice
usage, but there are now several good ones available on the internet
usage, but there are several good ones available on the internet
(see https://ngspice.sourceforge.io/tutorials.html).
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The latest version released is:
* ngspice-38 (released on Oct 30 2022)
* ngspice-39 (released on Jan 31 2023)
2.2. What are the latest features in the current release?
- New features:
+ Add multiplier flag 'm' to behavioral capacitor and inductor.
+ Re-enable dc sweep after transient sim.
+ When plotting the phase, standard now is "Radiant".
+ Add Lundin's geometry correction to the inductance formula.
+ New variable keep#branch to write the current to raw file
in the old fashion 1 v1#branch current
+ Translate PSPICE U instances into equivaalent XSPICE code models.
+ New configure flag --enable-shortcheck to enable a shortened make check
(only BSIM3 and BSIM4).
+ B source will accept parameters in statistical functions like agauss.
+ WinGUI: Add a button 'Stop' to stop a simulation in intercative
or control mode.
+ Update to the .probe p (power measurement) and .probe alli commands.
+ Update to XSPICE aswitch and pswitch.
+ Make FROM/TO work in TRIG/TARG and WHEN variants of .meas/meas command.
+ Limits to exp function, allow 0 for log (returning -1e99), used
when starting iterations.
+ Insert XSPICE bridging devices automatically when an analogue node
has the same name as an XSPICE event node.
+ New options savecurrents_bsim3, savecurrents_bsim4, savecurrents_mos1.
+ pwlts: a pwl v/i source with time input, smoothing and limiting
functions.
+ New functions to the Code Model Library: cm_get_node_name()
and cm_probe_node().
+ XSPICE: Add bidirectional digital/analog bridge.
+ Search for .spiceinit firstly in a user defined directory named in env
SPICE_USERINIT_DIR, then in the current directory, then in HOME, then
in USERPROFILE.
+ If compatmode is lt, change the pow(x,y) and x**y functions:
If x < 0, output only if y is integer number, otherwise output 0.
+ Add a limit of 0.999 to bipolar parameters mje, mjc, and mjs.
- Bug fixes:
+ many bugs fixed and code improvements (see bugs 583 and up)
+ making error messages more verbose
+ memory leaks removed
Please see file NEWS accompaniing this FAQ.
2.3. What does it look like?
Ngspice, as the original Spice3 (and Xspice and Cider) is a command
line simulator, but with a graphics output capability.
line simulator, but with a graphics output capability. Excellent
open source third party tool for schematic capture (KiCad, XSCHEM,
Qucs-S and others) are available.
2.4. Who are the authors of ngspice?
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4.4. Disclaimer and Copyright
Copyright: Holger Vogt, 2022
Copyright: Holger Vogt, 2023
License: Creative Commons Attribution Share-Alike (CC-BY-SA) v4.0.
This document is provided as is. The information in it is not
warranted to be correct: you use it at your own risk.

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README.adms
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This document is covered by the Creative Commons Attribution Share-Alike (CC-BY-SA) v4.0. .
As of Jan. 23 ADMS is deprectated and replaced by OpenVAF/OSDI.
As of Jan. 2023 ADMS is deprectated and replaced by OpenVAF/OSDI.
See README_OSDI.md and README_OSDI_howto.
All references to ADMS will be removed in a future ngspice release.