2026¶

April 5, 2026
in FPGA, RISC-V, DOOM, Tang Nano 20K
4 min read

Building a custom SoC to run DOOM

This page will describe my experience building a custom RISC-V CPU for the sole purpose of running DOOM on a small FPGA (the Gowin Tang Nano 20K).
I will be creating a custom instruction set (RV32doom?) that augments the base RV32IM with instructions useful for running DOOM at full resolution and framerate on this FPGA. I will also be implementing all of the Uncore components necessary for the CPU to function.

March 16, 2026
in ADS-B, SDR, DSP, FPGA, CPLD
6 min read

Decoding ADS-B on an FPGA

This project implements a complete, hardware-based ADS-B receiver pipeline by interfacing a HackRF One directly with a Gowin FPGA.

demo A demo of the working decoder receiving messages from a passing plane