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<div class="dokuwiki export">
<h1 class="sectionedit1"><a name="geda_gaf" id="geda_gaf">gEDA/gaf</a></h1>
<div class="level1">
<p>
Here is a list of programs, libraries and other things that are
part of gEDA/gaf (gschem and friends).
</p>
</div>
<!-- EDIT1 SECTION "gEDA/gaf" [1-128] -->
<h2 class="sectionedit2"><a name="schematic_capture" id="schematic_capture">Schematic capture</a></h2>
<div class="level2">
<p>
<strong>gschem</strong>(1) is the schematic capture program/tool which is part
of gEDA. Its sole purpose is to facilitate the graphical input of
components/circuits. See the <a href="geda-gschem_ug.html" class="wikilink1" title="geda-gschem_ug.html">gschem User Guide</a>
for more information on the program.
</p>
</div>
<!-- EDIT2 SECTION "Schematic capture" [129-394] -->
<h2 class="sectionedit3"><a name="netlisting" id="netlisting">Netlisting</a></h2>
<div class="level2">
<p>
<strong>gnetlist</strong>(1) is a netlist generation program. It takes as input
gEDA/gaf .sch (schematic) files and the required .sym (symbol)
files and converts them into netlists. See the
<a href="geda-gnetlist_ug.html" class="wikilink1" title="geda-gnetlist_ug.html">gnetlist User Guide</a> for more information on
the program.
</p>
</div>
<!-- EDIT3 SECTION "Netlisting" [395-673] -->
<h2 class="sectionedit4"><a name="attribute_editing" id="attribute_editing">Attribute editing</a></h2>
<div class="level2">
<p>
<strong>gattrib</strong>(1) is gEDA's attribute editor. It reads a set of
gschem .sch files (schematic files), and creates a spreadsheet
showing all components in rows, with the associated component
attributes listed in the columns.
</p>
</div>
<!-- EDIT4 SECTION "Attribute editing" [674-1055] -->
<h2 class="sectionedit5"><a name="utilities" id="utilities">Utilities</a></h2>
<div class="level2">
<p>
There are many utilities included as part of gEDA/gaf. See their
manual pages and READMEs in the source distribution for more
information on them:
</p>
<ul>
<li class="level1"><div class="li"> <strong>gaf</strong>(1) is a multipurpose command line utility implementing setting up the above programs, exporting schematics and symbols into various formats, and shell for command line processing of their data. See also <a href="geda-gaf_utility.html" class="wikilink1" title="geda-gaf_utility.html">this page on the utility</a>.</div>
</li>
</ul>
</div>
<!-- EDIT5 SECTION "Utilities" [1056-1487] -->
<h3 class="sectionedit6"><a name="utilities_for_schematics" id="utilities_for_schematics">Utilities for schematics</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>refdes_renum</strong>(1) is a utility for renumbering reference designators in gschem schematic files.</div>
</li>
<li class="level1"><div class="li"> <strong>grenum</strong>(1) is an advanced refdes renumber utility.</div>
</li>
<li class="level1"><div class="li"> <strong>garchive</strong>(1) is a utility written in Python used to create and extract gEDA design archives. In archive mode it creates a project archive from a bunch of project files, and in extract mode it extracts the files from the archive and places them in the local directory.</div>
</li>
<li class="level1"><div class="li"> <strong>gschlas</strong>(1) is a utility which can embed the in-use schematic symbols and pictures into a schematic or set of schematics to put them, for instance, on a website or in an email without the recipient needing to download lots of custom symbols for the design. It can also unembed symbol references from a schematic.</div>
</li>
</ul>
</div>
<!-- EDIT6 SECTION "Utilities for schematics" [1488-2278] -->
<h3 class="sectionedit7"><a name="utilities_for_symbols" id="utilities_for_symbols">Utilities for symbols</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>gsymcheck</strong>(1) is the symbol checker for the gEDA/gaf system. Give it a symbol file and it will go through and verify that the symbol will work in gschem and friends.</div>
</li>
<li class="level1"><div class="li"> <strong>gsymfix</strong>(1) is the utility to automatically fix common cut-and-paste issues with gEDA symbols and fix up the symbols so that they will pass gsymcheck with no errors or warnings.</div>
</li>
<li class="level1"><div class="li"> <strong>gmk_sym</strong>(1) is a program to create rectangular symbols for gschem from a file composed of comma separated lines.</div>
</li>
<li class="level1"><div class="li"> <strong>tragesym</strong>(1) is a small python script that creates gschem symbols out of structured textfiles. The aim of this script is to make it easier (and faster) to create symbols for gschem. See the <a href="geda-tragesym_tutorial.html" class="wikilink1" title="geda-tragesym_tutorial.html">tragesym tutorial</a> and README in the distribution.</div>
</li>
</ul>
</div>
<!-- EDIT7 SECTION "Utilities for symbols" [2279-3045] -->
<h3 class="sectionedit8"><a name="tools_to_facilitate_netlisting" id="tools_to_facilitate_netlisting">Tools to facilitate netlisting</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>gsch2pcb</strong>(1) is a frontend to gnetlist(1) which aids in creating and updating pcb(1) printed circuit board layouts based on a set of electronic schematics created with gschem(1). See also <a href="geda-gsch2pcb_tutorial.html" class="wikilink1" title="geda-gsch2pcb_tutorial.html">Bill Wilson's gsch2pcb tutorial</a>. Modern pcb also has an import function which uses import from gnetlist directly.</div>
</li>
<li class="level1"><div class="li"> <strong>gnet_hier_verilog.sh</strong>(1) is a simple shell script which gathers hierarchical information from a list of unique symbols/schematics originating from the top level schematic and produces a hierarchical Verilog netlist in a single file.</div>
</li>
</ul>
</div>
<!-- EDIT8 SECTION "Tools to facilitate netlisting" [3046-3663] -->
<h3 class="sectionedit9"><a name="utilities_for_printing_and_graphical_output" id="utilities_for_printing_and_graphical_output">Utilities for printing and graphical output</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>schdiff</strong>(1) is a graphical diff tool for gschem(1) schematics. It uses ImageMagick(1) and is most useful when combined with a revision control system (such as Git, Mercurial, and Subversion) so it can compare two revisions of the same file, review changes, etc.</div>
</li>
<li class="level1"><div class="li"> <strong>gpstoimage</strong> is a shell script that creates GIFs from PS files created by gschem using gs and ppmtogif. It has no documentation and is obsoleted by new gaf(1) and gschem(1) printing capabilities.</div>
</li>
</ul>
</div>
<!-- EDIT9 SECTION "Utilities for printing and graphical output" [3664-4189] -->
<h3 class="sectionedit10"><a name="format_conversion_tools" id="format_conversion_tools">Format conversion tools</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>convert_sym</strong>(1) converts a Viewlogic symbol/schematic to gEDA gschem format; there is also <strong>convert_sym.awk</strong> with almost the same functionality.</div>
</li>
<li class="level1"><div class="li"> <strong>smash_megafile</strong>(1) is a utility that takes a Viewlogic megafile and extracts its contents into a directory, where each element of the library will be represented with one file.</div>
</li>
<li class="level1"><div class="li"> <strong>olib</strong>(1) is a simple automated converter from OrCAD v4 <acronym title="American Standard Code for Information Interchange">ASCII</acronym> parts library to gEDA symbols.</div>
</li>
<li class="level1"><div class="li"> Sarlacc is an OrCAD to gEDA format converter. It consists of <strong>sarlacc_schem</strong>(1) and <strong>sarlacc_sym</strong>(1). The first utility written in C converts OrCAD schematic files (in 16-bit format) to gEDA format. The second is a <acronym title="Practical Extraction and Report Language">Perl</acronym> script which converts OrCAD text libraries to gEDA components.</div>
</li>
</ul>
</div>
<!-- EDIT10 SECTION "Format conversion tools" [4190-4952] -->
<h3 class="sectionedit11"><a name="tools_for_interaction_with_other_programs" id="tools_for_interaction_with_other_programs">Tools for interaction with other programs</a></h3>
<div class="level3">
<ul>
<li class="level1"><div class="li"> <strong>gxyrs</strong>(1) is a program written in <acronym title="Practical Extraction and Report Language">Perl</acronym> to batch process XYRS files. XYRS files are usually generated by <a href="http://pcb.geda-project.org/" class="urlextern" title="http://pcb.geda-project.org" rel="nofollow">PCB</a> design programs, and are used by board assemblers.</div>
</li>
<li class="level1"><div class="li"> <strong>pads_backannotate</strong>(1) is a <acronym title="Practical Extraction and Report Language">Perl</acronym> program which backannotates changes from Pads PowerPCB board layouts to gschem(1) schematics. See the <a href="geda-fbabgapp.html" class="wikilink1" title="geda-fbabgapp.html">Forward/Backward Annotation Between gEDA and Pads PowerPCB</a> document for more information.</div>
</li>
<li class="level1"><div class="li"> <strong>pcb_backannotate</strong>(1) is a program written in <acronym title="Practical Extraction and Report Language">Perl</acronym> which reads an engineering change order (ECO) files generated by the <a href="http://pcb.geda-project.org/" class="urlextern" title="http://pcb.geda-project.org" rel="nofollow">PCB</a> program and backannotates the requested changes to a gschem(1) schematics. See the <a href="http://pcb.geda-project.org/manual.html" class="urlextern" title="http://pcb.geda-project.org/manual.html" rel="nofollow">PCB manual</a> for a complete description of the ECO file format.</div>
</li>
</ul>
</div>
<!-- EDIT11 SECTION "Tools for interaction with other programs" [4953-6019] -->
<h2 class="sectionedit13"><a name="symbols" id="symbols">Symbols</a></h2>
<div class="level2">
<p>
Symbols (on a schematic) are an abstract representation of the
physical components used in electronic circuits. Initial gEDA
installation provides you with default symbols contributed by many
users. See also
<a href="http://gedasymbols.org/" class="urlextern" title="http://gedasymbols.org" rel="nofollow">http://gedasymbols.org</a> to find already available symbols
shared by other gEDA users.
</p>
</div>
<!-- EDIT13 SECTION "Symbols" [6370-6795] -->
<h2 class="sectionedit14"><a name="libraries" id="libraries">Libraries</a></h2>
<div class="level2">
<ul>
<li class="level1"><div class="li"> <strong>libgeda</strong> is a main gEDA library of functions for manipulating gEDA schematics and symbols which is used by many of the above mentioned programs and utilities. See the gEDA Scheme Reference Manual (<em>info geda-scheme</em>) for more information on the library.</div>
</li>
<li class="level1"><div class="li"> <strong>libgedacairo</strong> is a library which provides a renderer for schematics and symbols based on the Cairo vector graphics library and the Pango font library. Data for rendering is loaded using libgeda. See the libgedacairo/README in the gEDA/gaf distribution for more information.</div>
</li>
</ul>
</div>
<!-- EDIT14 SECTION "Libraries" [6796-7363] -->
<h2 class="sectionedit15"><a name="examples_and_other_documentation" id="examples_and_other_documentation">Examples and other documentation</a></h2>
<div class="level2">
<p>
gEDA/gaf contains some examples and other documentation which can
be found in the documentation installation directory of your
distribution.
</p>
</div>
<!-- EDIT15 SECTION "Examples and other documentation" [7364-] --></div>
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