ID:84010 Cannot connect addnsub1 port when NUMBER_OF_MULTIPLIERS parameter has value <number> -- value must be greater than or equal to 2

CAUSE: The Quartus Prime software cannot connect the addnsub1 port when the NUMBER_OF_MULTIPLIERS parameter is the specified value. To connect the addnsub1 port, the NUMBER_OF_MULTIPLIERS parameter value must be greater than or equal to 2.

ACTION: Change the value of the NUMBER_OF_MULTIPLIERS parameter to greater than or equal to 2, or disconnect the addnsub1 port.