Files and folders

This is a repository that contains links to other github repositories with analog designs. Most of the designs have been developed as part of the NTNU course TFE4188 - Advanced Integrated Circuits.

ci/       # Continous integration. Mostly check of the tutorials
docker/   # Dockerfiles to create a container with the tools
ip/       # all the IPs, config.yaml contains the links
tests/    # Makefile used for installation of the tools

Installing, and usage

For a detailed scription of installing the tools, see http://analogicus.com/aic2026/2025/10/25/The-Tools.html

For a description of the usage, see https://analogicus.com/aic2026/2025/10/26/Sky130nm-tutorial.html

For the impatient

git clone --recursive https://github.com/wulffern/aicex.git

I assume you have docker installed, or have windows subsystem for linux.

⚠ It’s a very good idea to check what’s inside scripts before you run them

./run.sh

You should now see a cyan “aicex@~$” terminal.

Check that you can open a new X terminal

xterm &

python3 -m pip install cicconf cicspi cicsim
cd ip
cicconf clone --https

You should now be able to run the tutorial at https://analogicus.com/aic2026/2025/10/26/Sky130nm-tutorial.html

Known issues

Xschem

Netlisting seems to be done not by pin number, but by order of B’s in .sym. Also, I’ve experienced different ordering for subckts, and for top cell
Be careful of x1[5:0] notation. Xschem does not automatically discover if there is another same x. I would recommend always uniquely naming instances with bus notation

docker

The aicex user has a uid of 1000, however, if you try and run it on a machine with a different uid for your user, then it does not seem to work. Don’t know how to fix it yet.

Ngspice

In 44.2 there is a missing $LDFLAGS on the line shell g++ --shared $v_objs $v_lib -pthread -lpthread -o $soname to compile on my M4 mac