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baiobelfer | fce5e6cfb6 | |
baiobelfer | b0de0ffc7c |
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doc/main.tex
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doc/main.tex
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@ -17,6 +17,112 @@
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\section{Introduction}
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This document provides a detailed description of the 1-bit full adder module implemented in Verilog. A full adder is a digital circuit that performs the addition of binary numbers. In this design, the module takes three inputs: two single-bit binary values, \texttt{a} and \texttt{b}, and a carry-in bit, \texttt{carry\_in}. It produces two outputs: the sum (\texttt{sum}) and a carry-out bit (\texttt{carry\_out}).
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\section*{Installing Yosys and nextpnr from Source}
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Yosys and nextpnr are open-source tools for digital synthesis and place-and-route. The following steps guide you through building and installing these tools from source.
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\subsection*{Yosys Installation}
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\begin{enumerate}
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\item \textbf{Clone the Yosys repository:} Begin by cloning the Yosys repository from GitHub.
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\begin{verbatim}
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git clone https://github.com/YosysHQ/yosys.git
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\end{verbatim}
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\item \textbf{Install dependencies:} Ensure all necessary dependencies are installed by running:
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\begin{verbatim}
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sudo apt-get install build-essential clang lld bison flex \
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libreadline-dev gawk tcl-dev libffi-dev git \
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graphviz xdot pkg-config python3 libboost-system-dev \
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libboost-python-dev libboost-filesystem-dev zlib1g-dev
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\end{verbatim}
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\item \textbf{Configure Yosys to use Clang:} In the Yosys directory, configure it to use the Clang compiler.
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\begin{verbatim}
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make config-clang
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\end{verbatim}
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\item \textbf{Initialize submodules:} Ensure all Git submodules are up to date.
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\begin{verbatim}
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git submodule update --init
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\end{verbatim}
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\item \textbf{Build Yosys:} Compile Yosys using multiple threads.
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\begin{verbatim}
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make -j32
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\end{verbatim}
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\item \textbf{Install Yosys:} After the build is complete, install Yosys system-wide.
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\begin{verbatim}
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sudo make install
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\end{verbatim}
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\end{enumerate}
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\subsection*{icestorm Installation}
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\begin{enumerate}
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\item \textbf{Clone the icestorm repository:} Download the icestorm repository from GitHub.
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\begin{verbatim}
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git clone https://github.com/YosysHQ/icestorm
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\end{verbatim}
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\item \textbf{Build icestorm:} Navigate to the icestorm directory and compile the project using all available processor cores.
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\begin{verbatim}
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cd icestorm/
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make -j$(nproc)
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\end{verbatim}
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\item \textbf{Install icestorm:} After the build is complete, install icestorm system-wide.
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\begin{verbatim}
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sudo make install
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\end{verbatim}
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\end{enumerate}
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\subsection*{nextpnr Installation}
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\begin{enumerate}
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\item \textbf{Navigate back to the parent directory:}
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\begin{verbatim}
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cd ../
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\end{verbatim}
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\item \textbf{Clone the nextpnr repository:} Download the nextpnr repository from GitHub.
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\begin{verbatim}
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git clone https://github.com/YosysHQ/nextpnr
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\end{verbatim}
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\item \textbf{Install dependencies:} Install additional libraries needed for nextpnr.
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\begin{verbatim}
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sudo apt install cmake libeigen3-dev libftdi-dev
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\end{verbatim}
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\item \textbf{Configure nextpnr for the iCE40 architecture:} In the nextpnr directory, run cmake with the iCE40 architecture option. This will also integrate Icestorm.
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\begin{verbatim}
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cd nextpnr/
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cmake . -DARCH=ice40
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\end{verbatim}
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\item \textbf{Build nextpnr:} Compile nextpnr using all available processor cores.
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\begin{verbatim}
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make -j$(nproc)
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\end{verbatim}
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\item \textbf{Install nextpnr:} Once the build completes, install nextpnr system-wide.
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\begin{verbatim}
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sudo make install
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\end{verbatim}
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\end{enumerate}
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\subsection*{Verification}
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After installing Yosys and nextpnr, verify the installation by running:
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\begin{verbatim}
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yosys -V
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nextpnr-ice40 --help
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\end{verbatim}
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These commands should display version or help information, confirming that the tools are correctly installed.
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\section{Module Description}
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The 1-bit full adder module is defined in Verilog using the following interface:
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