by Parameterized port list is used for making the parameterized modules. Instead of designing the module with fixed port length.
Design
For example, to make a 32 bits multiplexer, we could write in fixed length as follows:
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module mux2 (input [31:0] din1, din2, input sel, output [31:0] dout); assign dout = sel ? din1 : din2; endmodule |
Or make it parametrizable (WIDTH length):
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module mux2 #(parameter WIDTH=32) (input [WIDTH-1:0] din1, din2, input sel, output [WIDTH-1:0] dout); assign dout = sel ? din1 : din2; endmodule |
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