- Ben Eater - you tube
- Simple CPU http://www.simplecpudesign.com
- Crazy Small CPU https://minnie.tuhs.org/Programs/CrazySmallCPU/index.html
- and Microcoded CPU sim https://minnie.tuhs.org/Programs/UcodeCPU/index.html
- https://www.semanticscholar.org/paper/Step-by-step-design-and-simulation-of-a-simple-CPU-Schuurman/9bf7eb9200a43b077c6fccea9f05bfb3b58f3406
