The goal of SPiRA is develop a framework for IC designers to create and verify circuit layouts. The framework uses a parameterized methodology that allows designers to generate PCells, apply rule checking, and LVS verification. The framework allows the following, though some parts are still under active development:
- RDD: The newly proposed Python-based PDK schema, called Rule Deck Database. This schema allows connecting directly to Python object trees for advance data manipulation.
- PCells: Layout generators can be created using basic Python. The framework focusses on reducing native Python boiler-plate code to improve design efficiency.
- DRC (experimental): Rule checking are done by placing parameter descriptions, and connecting to a Template Cell created defined in the RDD.
- LVS (experimental): A graph network can be extracted using a mesh-to-graph methodology.
On Fedora install the following:
sudo dnf install redhat-rpm-config
sudo dnf install gcc-c++
sudo dnf install python3-devel
sudo dnf install tkinter
sudo dnf install gmshDocumentation for other Linux systems can be found in installation
You can install SPiRA directly from the Python package manager pip using. First create a virtual environment:
python3 -m venv env
source env/bin/activate
# Install requirements
pip install -r requirements.txt
# Normal install
pip install .
# Developer install
pip install -e .The complete framework documentation explains the basics of the RDD and PCell API. Note that the DRC and LVS modules are still being developed. Examples of using the PCell implementation is given in examples.
- Implemented Manhattan routing between terminals.
- Integrated circleci.
- Started adding unit tests using pytest.
- Updated auto doc generation for classes.
- Added MidPointField for port and terminal midpoints.
- Introduces the Shape class that allows for complex point manipulations.
- Introduces
termwhich is a vertical connection port. - Routes are defined as a Shape with two connected terminal ports.
- Initial release.