ID:15458 Port <name> of DSP block output WYSIWYG primitive "<name>" is not used, but "<name>" is part of an output adder chain that uses saturation

CAUSE: The specified port of the specified DSP block output WYSIWYG primitive is not connected or is connected to GND. When a WYSIWYG DSP block output primitive is part of an output adder chain that uses saturation, it should saturate after the second level adder and after the chain adder.

ACTION: Either disconnect the specified WYSIWYG DSP block output primitive from the adder chain, or connect the specified port to VCC or to a dynamic signal.