tests/simple/implicit_ports.v

   1 // Test implicit port connections
   2 module alu (input [2:0] a, input [2:0] b, input cin, output cout, output [2:0] result);
   3         assign cout = cin;
   4         assign result = a + b;
   5 endmodule
   6
   7 module named_ports(input [2:0] a, b, output [2:0] alu_result, output cout);
   8         wire cin = 1;
   9         alu alu (
  10                 .a(a),
  11                 .b, // Implicit connection is equivalent to .b(b)
  12                 .cin(), // Explicitely unconnected
  13                 .cout(cout),
  14                 .result(alu_result)
  15         );
  16 endmodule