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Verilog HDL Gate Instantiation error at <location>: gate requires at least one input and one output port


CAUSE: In a Gate Instantiation at the specified location in a Verilog Design File (.v), you instantiated a built-in logic gate; however, the gate is missing required ports. Basic logic gates require at least one input and one output connection to function correctly in the circuit.
ACTION: Add the missing input or output ports to the gate.

See also:

Section 7.1 of the IEEE Std. 1364-2001 IEEE Standard Verilog Hardware Description Language manual

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