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@YosysHQ

Yosys Headquarters

Yosys Open SYnthesis Suite

YosysHQ - Open Source EDA

OSS CAD Suite: the one-stop shop for our tools

If you want to use our EDA tools, the easiest way is to install the binary release OSS CAD suite, which contains all required dependencies and related tools. Find the documentation here. We also have an OSS CAD Suite github action for using the tools in a github CI workflow.

Tabby CAD Suite is a commercial extension of OSS CAD Suite available from YosysHQ GmbH that additionally includes the Verific frontend for industry-grade SystemVerilog and VHDL support, formal verification with SVA, and formal apps.

Our Projects

Front-ends for applications built on top of Yosys:

  • sby: formal property checking
  • mcy: mutation coverage
  • eqy: equivalence checking

Other notable projects:

  • riscv-formal: formally check compliance with the RISC-V specification
  • picorv32: A Size-Optimized RISC-V CPU
  • nerv: A very simple educational RISC-V CPU for demonstrating riscv-formal

Community

Support us

Like what we do? Please consider either buying a license for the Tabby CAD Suite or becoming a sponsor.

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  1. yosys yosys Public

    Yosys Open SYnthesis Suite

    C++ 3.5k 894

  2. nextpnr nextpnr Public

    nextpnr portable FPGA place and route tool

    C++ 1.3k 245

  3. sby sby Public

    SymbiYosys (sby) -- Front-end for Yosys-based formal verification flows

    Python 410 76

  4. oss-cad-suite-build oss-cad-suite-build Public

    Multi-platform nightly builds of open source digital design and verification tools

    Shell 872 78

Repositories

Showing 10 of 38 repositories
  • oss-cad-suite-build Public

    Multi-platform nightly builds of open source digital design and verification tools

    YosysHQ/oss-cad-suite-build’s past year of commit activity
    Shell 872 ISC 78 49 1 Updated Dec 1, 2024
  • nextpnr Public

    nextpnr portable FPGA place and route tool

    YosysHQ/nextpnr’s past year of commit activity
  • yosys Public

    Yosys Open SYnthesis Suite

    YosysHQ/yosys’s past year of commit activity
    C++ 3,515 ISC 894 457 129 Updated Nov 30, 2024
  • imctk Public

    Incremental Model Checking Toolkit

    YosysHQ/imctk’s past year of commit activity
    Rust 5 2 10 1 Updated Nov 29, 2024
  • icestorm Public

    Project IceStorm - Lattice iCE40 FPGAs Bitstream Documentation (Reverse Engineered)

    YosysHQ/icestorm’s past year of commit activity
    Python 1,003 ISC 225 38 17 Updated Nov 29, 2024
  • furo-ys Public Forked from pradyunsg/furo

    A clean customizable documentation theme for Sphinx

    YosysHQ/furo-ys’s past year of commit activity
    Sass 0 MIT 330 0 2 Updated Nov 28, 2024
  • apicula Public

    Project Apicula 🐝: bitstream documentation for Gowin FPGAs

    YosysHQ/apicula’s past year of commit activity
    Verilog 498 MIT 68 13 6 Updated Nov 26, 2024
  • eqy Public

    Equivalence checking with Yosys

    YosysHQ/eqy’s past year of commit activity
    Python 31 6 10 0 Updated Nov 8, 2024
  • sby Public

    SymbiYosys (sby) -- Front-end for Yosys-based formal verification flows

    YosysHQ/sby’s past year of commit activity
    Python 410 76 42 13 Updated Nov 7, 2024
  • mcy Public

    Mutation Cover with Yosys (MCY)

    YosysHQ/mcy’s past year of commit activity
    C++ 77 ISC 9 1 0 Updated Nov 5, 2024