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-This document is covered by the Creative Commons Attribution Share-Alike (CC-BY-SA) v4.0. .
-
-*************** Verilog A Device models in ngspice ******************************************
-
-
-1 Introduction
-
-New compact device models today are released as Verilog-A code. Ngspice applies ADMS to
-translate the va code into ngspice C syntax. Currently a limited number of Verilog-A models is
-supported: HICUM level0 and level2 (HICUM model web page), MEXTRAM (MEXTRAM
-model web page), EKV (EKV model web page) and PSP (NXP PSP web site).
-
-
-2 ADMS
-
-ADMS is a code generator that converts electrical compact device models specified in high-level
-description language into ready-to-compile C code for the API of spice simulators. Based on
-transformations specified in XML language, ADMS transforms Verilog-AMS code into other
-target languages. Here we use it to to translate the va code into ngspice C syntax.
-To make use of it, a set of ngspice specific XML files is distributed with ngspice in ngspice\
-src\spicelib\devices\adms\admst. Their translation is done by the code generator executable
-admsXml (see below).
-
-
-3 How to integrate a Verilog-A model into ngspice
-
-3.1 How to setup a *.va model for ngspice
-
-Unfortunately most of the above named models’ licenses are not compatible to free software
-rules as defined by DFSG. Therefore since ngspice-28 the va model files are no longer part of
-the standard ngspice distribution. They may however be downloaded as a tar.gz archive from the
-ngspice-30 file distribution folder. After downloading, you may expand the zipped files into
-your ngspice top level folder. The models enable dc, ac, and tran simulations. Noise simulation
-is not supported.
-Other (foreign) va model files will not compile without code tweaking, due to the limited
-capabilities of our ADMS installation.
-
-
-3.2 Adding admsXml to your build environment
-
-The actual admsXml code is maintained by the QUCS project and is available at GitHub.
-Information on how to compile and install admsXml for Linux or Cygwin is available on the
-GitHub page. For MS Windows users admsXml.exe is available for download from
-https://sourceforge.net/projects/mot-adms/. You may copy admsXml.exe to your MSYS2 setup
-into the folder msys64\mingw64\bin, if 64 bit compilation is intended.
-More information, though partially outdated, is obtainable from the ngspice web pages
-(http://ngspice.sourceforge.net/admshowto.html) and from README-old.adms.
-
-
-3.3 Compile ngspice with ADMS
-
-In the top level ngspice folder there are two compile scripts compile_min.sh and compile_linux.sh.
-They contain information how to compile ngspice with ADMS. You will have to run autogen.sh
-with the adms flag
-./autogen.sh --adms
-In addition you have to add --enable-adms to the ./configure command. Please check chapter
-32.1 of the ngspice manual for perequisites and further details.
-Compiling ngspice with ADMS with MS Visual Studio is not supported.