https://www.pistack.xyz/tags/eda/ Recent content in Eda on Pi Stack Hugo en-us Sun, 07 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-07-open-source-fpga-development-toolchain-yosys-iverilog-ghdl-nextpnr/ Sun, 07 Jun 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-06-07-open-source-fpga-development-toolchain-yosys-iverilog-ghdl-nextpnr/ <h2 id="introduction">Introduction</h2> <p>Field-Programmable Gate Arrays (FPGAs) have traditionally been locked behind expensive proprietary toolchains from Xilinx (Vivado), Intel (Quartus), and Lattice (Diamond). A single Vivado license costs thousands of dollars per year, and the closed-source nature of these tools makes them difficult to integrate into automated CI/CD pipelines. The open-source FPGA toolchain — <strong>Yosys</strong> for synthesis, <strong>nextpnr</strong> for place-and-route, and <strong>Icarus Verilog</strong> or <strong>GHDL</strong> for simulation — has matured to the point where commercial FPGA designs can be developed entirely with free software.</p>