Nios® V Embedded Processor Design Handbook

ID 726952
Date 11/25/2024
Public
Document Table of Contents

6.2.3.2.3.4. No Trigger Conditions

When disabling Trigger Enable for all signals, the Signal Tap logic analyzer does not configure any trigger conditions. It is synonymous with specifying all trigger conditions as Don’t Care.

Upon starting the Signal Tap logic analyzer, data acquisition runs indefinitely until data acquisition is stopped or the buffer is full. This approach is applied to determine the current Program Counter of the processor, such as in the event of a processor hang. While there are multiple causes for processor hang, having the Program Counter value at the event of processor hang is crucial in debugging the issue.

Subsequently, you can apply the same Program Counter value as a basic triggering condition for precise capturing.