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RISC-V CPU for OpenFPGAs, in Icestudio
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RISC-V CPU for OpenFPGAs, in Icestudio

Quick start

  • Open the file with Icestudio
  • Connect the Alhambra-II board (or compatible) and upload the design
  • It will take around 6min to sinthesize and upload to the board
  • The system is ready for executing your firmware!

Testing the firmaware in C

  • go to the firmware-c folder
  • Execute make (It is assumed that you already have the risc-v tools installed)
  • You should see a binary counter in the LEDs
  • If you open a serial terminal (115200 bauds) you will see messages

  • Pressing the "1" key will reset the counter and show the intial message again

Testing the firmware in asm

  • go to the firmware-asm folder
  • Execute make
  • You should see a value in the LEDs


It is based on the picorv32 by Clifford Wolf

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