Warning: Output pin "" driven by bidirectional pin "" cannot be tri-stated

Description

You may see this warning in the Quartus® II software version 10.1 SP1 or later during Analysis & Synthesis when you turn on the Rapid recompile option and a previous compilation database exists in the project directory.

Resolution

You can safely ignore this warning.

This warning is scheduled to be suppressed in a future release of the Quartus II software.

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