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Exemplary NEORV32 Setups and Projects

Containers Implementation License

This repository provides community projects as well as exemplary setups for different FPGAs, platforms, boards and toolchains for the NEORV32 RISC-V Processor. Project maintainers may make pull requests against this repository to add or link their setups and projects.

Tip

Ready-to-use bitstreams for the provided open source toolchain-based setups are available via the assets of theImplementation Workflow.

Community Projects

This list shows projects that focus on custom hard- or software modifications, specific applications, etc.

Link Description Author(s)
🌍 github.com/motius tutorial: custom CRC32 processor module for the nexys-a7 boards motius (ikstvn, turbinenreiter)
🌍 neorv32-examples NEORV32 setups/projects for different Intel/Terasic boards emb4fun
🌍 neorv32-xmodem-bootloader A XModem Bootloader for the DE0-Nano board emb4fun
🌍 neorv32-xip-bootloader A XIP (eXecute In Place) Bootloader for the NEORV32 betocool-prog

Setups using Commercial Toolchains

The setups using commercial toolchains provide pre-configured project files that can be opened with the according FPGA tools.

Setup Toolchain Board FPGA Author(s)
📁 de0-nano-test-setup Intel Quartus Prime Terasic DE0-Nano Intel Cyclone IV EP4CE22F17C6N stnolting
📁 de0-nano-test-setup-qsys Intel Quartus Prime Terasic DE0-Nano Intel Cyclone IV EP4CE22F17C6N torerams
📁 de0-nano-test-setup-avalonmm Intel Quartus Prime Terasic DE0-Nano Intel Cyclone IV EP4CE22F17C6N torerams
📁 terasic-cyclone-V-gx-starter-kit-test-setup Intel Quartus Prime Terasic Cyclone-V GX Starter Kit Intel Cyclone V 5CGXFC5C6F27C7N zs6mue
📁 UPduino_v3 Lattice Radiant tinyVision.ai Inc. UPduino v3.0 Lattice iCE40 UltraPlus iCE40UP5K-SG48I stnolting
📁 iCEBreaker Lattice Radiant iCEBreaker @ GitHub Lattice iCE40 UltraPlus iCE40UP5K-SG48I stnolting

| 📁 arty-a7-35-test-setup | Xilinx Vivado | Digilent Arty A7-35 | Xilinx Artix-7 XC7A35TICSG324-1L | stnolting | | 📁 nexys-a7-test-setup | Xilinx Vivado | Digilent Nexys A7 | Xilinx Artix-7 XC7A50TCSG324-1 | AWenzel83 | | 📁 nexys-a7-test-setup | Xilinx Vivado | Digilent Nexys 4 DDR | Xilinx Artix-7 XC7A100TCSG324-1 | AWenzel83 | | 📁 on-chip-debugger-intel | Intel Quartus Prime | Gecko4Education | Intel Cyclone IV E EP4CE15F23C8 | NikLeberg | | 📁 tang-nano-9k | Gowin EDA | Sipeed Tang Nano 9K | Gowin LittleBee GW1NR-9 GW1NR-LV9QN88PC6/I5 | IvanVeloz

Setups using Open-Source Toolchains

All setups using open-source toolchains are located in the osflow folder. See the README there for more information how to run a specific setup and how to add new targets.

Setup Toolchain Board FPGA Author(s)
📁 UPDuino-v3.0 GHDL, Yosys, nextPNR UPduino v3.0 Lattice iCE40 UltraPlus iCE40UP5K-SG48I tmeissner
📁 FOMU GHDL, Yosys, nextPNR FOMU Lattice iCE40 UltraPlus iCE40UP5K-SG48I umarcor
📁 iCESugar GHDL, Yosys, nextPNR iCESugar Lattice iCE40 UltraPlus iCE40UP5K-SG48I umarcor
📁 AlhambraII GHDL, Yosys, nextPNR AlhambraII Lattice iCE40HX4K zipotron
📁 Orange Crab GHDL, Yosys, nextPNR Orange Crab Lattice ECP5-25F umarcor, jeremyherbert
📁 ULX3S GHDL, Yosys, nextPNR ULX3S Lattice ECP5 LFE5U-85F-6BG381C zipotron
📁 ChipWhisperer iCE40CW312 GHDL, Yosys, nextPNR CW312T_ICE40UP Lattice iCE40 UltraPlus iCE40UP5K-UWG30 colinoflynn
🌍 ULX3S-SDRAM GHDL, Yosys, nextPNR ULX3S Lattice ECP5 LFE5U-85F-6BG381C zipotron

Adding Your Project or Setup

Please respect the following guidelines if you'd like to add or link your setup/project to the list:

  • check out the project's code of conduct
  • for FPGA- / board- / toolchain-specific setups:
    • a "setup" is a wrapped (and maybe script-aided) implementation of the NEORV32 processor for a certain FPGA/board/toolchain
    • add a link if the board you are using provides online documentation or can be purchased somewhere
    • use the 📁 emoji (:file_folder:) if the setup is located in this repository; use the 🌍 emoji (:earth_africa:) if it is a link to your local project
    • please add a README.md file to give some brief information about the setup and a .gitignore file to keep things clean
    • for local setups you can add your setup to the implementation GitHub actions workflow to automatically generate up-to-date bitstreams for your setup
  • for projects:
    • provide a link to your project (use the 🌍 (:earth_africa:) emoji)
    • provide a short description
    • further information should be provided by a project-local README

Setup-Specific NEORV32 Software Framework Modifications

In order to use the features provided by the setups, minor optional changes can be made to the default NEORV32 setup.