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cocotb is a coroutine based cosimulation library for writing VHDL and Verilog testbenches in Python.

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Installation

Cocotb can be installed by running pip install cocotb.

Quickstart

# Install pre-requisites (waveform viewer optional)
sudo yum install -y iverilog python-devel gtkwave

# Checkout git repositories
git clone https://github.com/cocotb/cocotb.git

# Install cocotb
pip install ./cocotb

# Run the tests...
cd cocotb/examples/endian_swapper/tests
make

# View the waveform
gtkwave waveform.vcd

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Coroutine Co-simulation Test Bench

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  • Python 39.4%
  • C++ 20.5%
  • C 14.4%
  • VHDL 11.6%
  • Makefile 8.0%
  • Verilog 3.8%
  • Other 2.3%