Now Available: FREE RISC-V EXPLORER. A fast, free way to develop with RISC-V.See how it works

Download Flute RISC-V Core

Flute is a free 5-stage plug-n-play RISC-V processor core delivering the key benefits of open source hardware.

Please complete the below form and a download link will be provided upon submission.

Flute RISC-V Diagram

Flute Feature Set

  • RV32IMU
  • RV64IMASU (FDC to follow)
  • AXI4-Lite interface
  • 5-stage pipeline
  • 100 MHz (Xilinx UltraScale
  • < 5000 LUTs (Xilinx UltraScale)
  • 4KB Instruction & Data caches
  • Hardware multiply-divide
  • RISC-V Debug Module


Free synthesizable Verilog saves considerable license and royalty fees. Optional maintenance and support eliminate the risk of using unsupported free IP.


Freedom to customize and enhance RISC-V cores and subsystems enables better innovation, R&D and product differentiation.


Freedom to pursue research and business independently of proprietary IP licensing and restrictions improves efficiency and flexibility.