\documentclass{beamer}

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% shell, don't just prefix the commands with "sudo").

% formats the text accourding the set language
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{multirow}
\usepackage{booktabs}
\usepackage{listings}
\usepackage{setspace}
\usepackage{skull}
\usepackage{units}

\usepackage{tikz}
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\usetikzlibrary{arrows}
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\usetikzlibrary{through}
\usetikzlibrary{shapes.geometric}

\lstset{basicstyle=\ttfamily}

\def\B#1{{\tt\textbackslash{}#1}}
\def\C#1{\lstinline[language=C++]{#1}}
\def\V#1{\lstinline[language=Verilog]{#1}}

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\title{Yosys Open SYnthesis Suite}
\author{Clifford Wolf}
\institute{http://www.clifford.at/}

\usetheme{Madrid}
\usecolortheme{seagull}
\beamertemplatenavigationsymbolsempty

\definecolor{YosysGreen}{RGB}{85,136,102}
\definecolor{MyBlue}{RGB}{85,130,180}

\setbeamercolor{title}{fg=black,bg=YosysGreen!70}
\setbeamercolor{titlelike}{fg=black,bg=YosysGreen!70}
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\begin{document}

\begin{frame}
\titlepage
\end{frame}

\setcounter{section}{-1}
\section{Outline}

\begin{frame}{Outline}
Yosys is an Open Source Verilog synthesis tool, and more.

\bigskip
Outline of this presentation:
\begin{itemize}
\item Introduction to the field and Yosys
\item Yosys by example: synthesis
\item Yosys by example: advanced synthesis
\item Yosys by example: beyond synthesis
\item Programming Yosys extensions
\end{itemize}
\end{frame}

\include{PRESENTATION_Intro}
\include{PRESENTATION_ExSyn}

\end{document}