Quartus

Not enough I/O pins used -- assigned too many buried macrocells


CAUSE: You assigned too many buried macrocells to non-buried macrocells. As a result, the Quartus II software does not have enough I/O pins to place other output/bidir pins or input registers.
ACTION: Remove some of the buried macrocell location assignments.

See also:

Assigning Pins
Assigning an Entity or Node to a Location
Changing Assignments
Deleting Assignments in the Assignment Organizer Dialog Box
Overview: Making Assignments
Overview: Working with Assignments in the Floorplan Editor

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