RISC-V FM Synthesizer Target board: HiFive1 RISC-V Dev Kit SDK: Arduino IDE for HiFive1 CPU Clock Frequency: 256MHz PLL Demo https://youtu.be/y2ppOACns_s Documents and Latest Version http://cellspe.matrix.jp/miyaslair/synth_riscv.html HiFive1 https://www.sifive.com/products/hifive1/