ID:16226 One or more registers failed to be packed into a DSP bank due to a Quartus or user restriction

CAUSE: A Quartus or user setting prevented some registers from being packed inside a DSP block.

ACTION: Please refer to "Fixed Point DSP Register Packing Details" table in the Fitter Report to determine which DSP blocks were affected. Check for assignments that prevent register packing, and ensure these registers are not at partition boundaries or are used as synchronizers.