Quartus® Prime Pro Edition User Guide: Debug Tools

ID 683819
Date 8/04/2025
Public
Document Table of Contents

1.3.1. In-System Sources and Probes

In-System Sources and Probes allow you to read and write to a design by accessing JTAG resources.

You instantiate an Altera IP into your HDL code. This Altera IP core contains source ports and probe ports that you connect to signals in your design, and abstracts the JTAG interface's transaction details.

In addition, In-System Sources and Probes provide a GUI that displays source and probe ports by instance, and allows you to read from probe ports and drive to source ports. These features make this tool ideal for toggling a set of control signals during the debugging process.