76 lines
2.5 KiB
Plaintext
76 lines
2.5 KiB
Plaintext
ngspice Xspice code model support.
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2012 05 06
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--------------------------------------
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Use configure the flag --enable-xspice to compile xspice support in,
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when you run the ./configure script.
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This creates a new command, "codemodel", which you can
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use to load a codemodel.
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The command codemodel attempts to load all the codemodels specified in the
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arguments, eg
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"ngspice 1 ->codemodel /usr/lib/ngspice/analog.cm /usr/lib/ngspice/spice2poly.cm"
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( note: the codemodel path must begin with ./ or / to work )
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The codemodels are automatically compiled and then installed in
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${prefix}/lib/ngspice/ when ngspice is installed.
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To create your own codemodels:
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* Unpack the ngspice source and compile as normal.
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* cd src/xspice/icm
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* make the directory structure for the new library:
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Create the nested library_name and module_name directories and copy the
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source code to the module_name directories
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src/xspice/icm/ <library_name> /
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modpath.lst udnpath.lst
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<module_name> /
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files:
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cfunc.mod ifspec.ifs ( for a device )
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or
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udnfunc.c ( or a user defined node )
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* For each library create the files modpath.lst and udnpath.lst, which
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contain a list of the user devices and nodes respectivily, in the location
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shown above.
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* Edit src/xspice/icm/makedefs.in and alter the CMDIRS line to include
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your library directory.
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* Run make in the src/xspice/icm directory. ( the makefile does the rest )
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The codemodel can be then found in
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src/xspice/icm/<library_name>/<library_name>.cm
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-----------------------------------------
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SPICE2 POLY codemodel support.
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SPICE2 POLY attributes are now available for controlled sources.
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To use POLY attributes, configure and install ( make install )
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ngspice with the --enable-xspice flag set as described above.
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After compilation of ngspice edit
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${prefix}/share/tclspice/scripts/spinit or
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${prefix}/share/ngspice/scripts/spinit
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( depending if you included tcl support or not )
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and uncomment the
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"* codemodel /usr/lib/spice/spice2poly.cm"
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line and edit as required. ( the path to spice2poly.cm may be wrong )
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( alternativily create a ~/.spiceinit file with the above codemodel line )
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Then read in your SPICE netlist. SPICE 2 POLY attributes in
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controlled sources will be translated into .models invoking the
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spice2poly codemodel. You should be able to run ngspice and simulate
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in the usual way!
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Please direct questions/comments/complaints to the ngspice user's list
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or forum.
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