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      // DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2024 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module serial_adder(
  input  cin,
  output cout
);
    localparam WIDTH = 8;
    wire [WIDTH:0] c;
    generate for (genvar i = 0; i < WIDTH; i++)
        full_adder fa(c[i+1]);
    endgenerate
    assign c[0] = cin;
    assign cout = c[WIDTH+1]; // intentional out-of-range
endmodule
module full_adder (output cout);
endmodule
 
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