I receive the following warnings in Translate with the Asynchronous Input Synchronization coding example from the ISE 11.1 Language Template:
What does this warning mean, and how can I avoid it?
The warning states that the HBLKNM attribute cannot be propagated to valid applicable elements.
In the coding example, HBLKNM is expected to propagate to registers.
The problem is that when attached to a NET, HBLKNM is only propagated to PADs.
It is not explicitly stated in the ISE 10.1 Constraints Guide but has been added in the 11.1 documentation.
To eliminate the warning, place HBLKNM constraints on desired register instances.