CAUSE: | You assigned the specified post-fitting node as a clock signal. However, the Quartus II software cannot use the node as the clock signal because a SignalTap II clock signal must be a pre-synthesis node. |
ACTION: | Click OK to close the message dialog box, and use the SignalTap II: pre-synthesis filter in the Node Finder to search for a valid clock signal. |
See also:
Adding a Node to a SignalTap II File
Overview: Using the SignalTap II Logic Analyzer
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