SPICE is a general-purpose, open-source analog electronic circuit simulator. It stands for Simulation Program with Integrated Circuit Emphasis. ngspice is a successor, and is easily installable on Linux. It’s the simulator I’ve used to explore the Skywater 130 PDK.

Here’s an example spice simulation file that I used to simulate the inverter I drew.

And here’s a nice demo of me showing how a flip-flop works by simulating a Sky130 D type flip flop with SPICE.

Course feedback

I've always looked at Magic and it was basically impenetrable to me. So I was really happy to learn how to actually use it and understand how to make an ASIC. I found found the course materials very easy to follow and the discord conversations were also very useful.

Robert Baruch (digital course)