Quartus

Port direction mismatch for entity <name> at port <name>. Upper entity is expecting <name> pin while lower entity is using <name> pin.

CAUSE: You connected the specified upper entity at the specified port in a different direction than the direction of the specified lower entity pin. As a result, the Quartus II software cannot compile the design.
ACTION: Remove the illegal connection or connect the upper entity in the same direction as the lower entity pin.

- PLDWorld -

 
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