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\chapter{Programming Yosys Extensions}
\label{chapter:prog}
This chapter contains some bits and pieces of information about programming
yosys extensions. Also consult the section on programming in the ``Yosys
Presentation'' (can be downloaded from the Yosys website as PDF) and don't
be afraid to ask questions on the YosysHQ Slack.
\section{Guidelines}
The {\tt guidelines} directory contains notes on various aspects of Yosys development. The files {\tt GettingStarted} and {\tt CodingStyle} may be of particular interest, and are reproduced here.
\lstinputlisting[title=GettingStarted,numbers=left,frame=single]{../guidelines/GettingStarted}
\lstinputlisting[title=CodingStyle,numbers=left,frame=single]{../guidelines/CodingStyle}
\section{The ``stubsnets'' Example Module}
The following is the complete code of the ``stubsnets'' example module. It is included in the Yosys source distribution as {\tt manual/CHAPTER\_Prog/stubnets.cc}.
\lstinputlisting[title=stubnets.cc,numbers=left,frame=single,language=C++]{CHAPTER_Prog/stubnets.cc}
\lstinputlisting[title=Makefile,numbers=left,frame=single,language=make]{CHAPTER_Prog/Makefile}
\lstinputlisting[title=test.v,numbers=left,frame=single,language=Verilog]{CHAPTER_Prog/test.v}
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