Getting started
TerosHDL supports a basic visualization of the current file you have open. TerosHDL uses yosys, which is an open source hdl synth tool.
The following section describes how to get your environment ready for using the schematic viewer.
Installation
Linux/Mac/Windows
TerosHDL suggests OSS CAD Suite, which is a prebuilt collection of tools which also includes Yosys + VHDL support.
You can download OSS CAD Suite by following this link
TerosHDL expects the tools to be available in the PATH variable, ensure you add the "bin" folder of the OSS CAD Suite to your operating system PATH variable. In other case you need to configure your Yosys installation path in: TerosHDL Configuration >> Tools >> Yosys >> Installation Path
Standalone
TerosHDL includes a WebAssembly version of Yosys for Verilog/SV. You can select it in: TerosHDL Configuration >> Schematic Viewer >> General >> Backend >> Standalone and you don't need to install anything.
Verilog
If you plan to only use verilog in your designs, you can use yowasp-yosys, which is a distribution of yosys running as an executable.
You only need to run the following command:
pip install yowasp-yosys
To use yowasp-yosys, select YOWASP in the configuration menu: TerosHDL Configuration >> Schematic Viewer >> General >> Backend
If you are using Windows add yowasp-yosys to the System Path. For example: C:\Users\xxx\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts
As alternative you can install Yosys using OSS CAD Suite: https://github.com/YosysHQ/oss-cad-suite-build?tab=readme-ov-file#installation
VHDL
Yosys was natively designed to work with verilog and thus an additional plugin is required to support VHDL.
To use yosys+ghdl, select GHDL + Yosys in the configuration menu.
You can install Yosys+GHDL using OSS CAD Suite: https://github.com/YosysHQ/oss-cad-suite-build?tab=readme-ov-file#installation