1 files changed, 67 insertions, 0 deletions
diff --git a/docs/images/verilog_flow.tex b/docs/images/verilog_flow.tex
new file mode 100644
index 000000000..d3e269d0d
--- /dev/null
+++ b/docs/images/verilog_flow.tex
@@ -0,0 +1,67 @@
+\documentclass[12pt,tikz]{standalone}
+\pdfinfoomitdate 1
+\pdfsuppressptexinfo 1
+\pdftrailerid{}
+\usepackage[utf8]{inputenc}
+\usepackage{amsmath}
+\usepackage{pgfplots}
+\usepackage{tikz}
+\usetikzlibrary{shapes.geometric}
+\pagestyle{empty}
+
+\begin{document}
+\begin{tikzpicture}
+	\tikzstyle{process} = [draw, fill=green!10, rectangle, minimum height=3em, minimum width=10em, node distance=5em, font={\ttfamily}]
+	\tikzstyle{data} = [draw, fill=blue!10, ellipse, minimum height=3em, minimum width=7em, node distance=5em, font={\ttfamily}]
+
+	\node[data]    (n1)               {Verilog Source};
+	\node[process] (n2) [below of=n1] {Verilog Frontend};
+	\node[data]    (n3) [below of=n2] {AST};
+	\node[process] (n4) [below of=n3] {AST Frontend};
+	\node[data]    (n5) [below of=n4] {RTLIL};
+
+	\draw[-latex] (n1) -- (n2);
+	\draw[-latex] (n2) -- (n3);
+	\draw[-latex] (n3) -- (n4);
+	\draw[-latex] (n4) -- (n5);
+
+	\tikzstyle{details} = [draw, fill=yellow!5, rectangle, node distance=6cm, font={\ttfamily}]
+
+	\node[details] (d1) [right of=n2] {\begin{minipage}{5cm}
+		\hfil
+		\begin{tikzpicture}
+			\tikzstyle{subproc} = [draw, fill=green!10, rectangle, minimum height=2em, minimum width=10em, node distance=3em, font={\ttfamily}]
+			\node (s0) {};
+			\node[subproc] (s1) [below of=s0] {Preprocessor};
+			\node[subproc] (s2) [below of=s1] {Lexer};
+			\node[subproc] (s3) [below of=s2] {Parser};
+			\node[node distance=3em] (s4) [below of=s3] {};
+			\draw[-latex] (s0) -- (s1);
+			\draw[-latex] (s1) -- (s2);
+			\draw[-latex] (s2) -- (s3);
+			\draw[-latex] (s3) -- (s4);
+		\end{tikzpicture}
+	\end{minipage}};
+
+	\draw[dashed] (n2.north east) -- (d1.north west);
+	\draw[dashed] (n2.south east) -- (d1.south west);
+
+	\node[details] (d2) [right of=n4] {\begin{minipage}{5cm}
+		\hfil
+		\begin{tikzpicture}
+			\tikzstyle{subproc} = [draw, fill=green!10, rectangle, minimum height=2em, minimum width=10em, node distance=3em, font={\ttfamily}]
+			\node (s0) {};
+			\node[subproc] (s1) [below of=s0] {Simplifier};
+			\node[subproc] (s2) [below of=s1] {RTLIL Generator};
+			\node[node distance=3em] (s3) [below of=s2] {};
+			\draw[-latex] (s0) -- (s1);
+			\draw[-latex] (s1) -- (s2);
+			\draw[-latex] (s2) -- (s3);
+		\end{tikzpicture}
+	\end{minipage}};
+
+	\draw[dashed] (n4.north east) -- (d2.north west);
+	\draw[dashed] (n4.south east) -- (d2.south west);
+
+\end{tikzpicture}
+\end{document}