// DESCRIPTION: Verilator: Verilog Test module // // This file ONLY is placed under the Creative Commons Public Domain, for // any use, without warranty, 2023 by Wilson Snyder. // SPDX-License-Identifier: CC0-1.0 module t(/*AUTOARG*/ // Inputs clk ); input clk; integer cyc = 0; string s, s2; // Test loop always @ (posedge clk) begin cyc <= cyc + 1; s = {s2, {cyc{"*"}}}; if (cyc != s.len()) $stop; if (cyc == 0 && s != "") $stop; if (cyc == 1 && s != "*") $stop; if (cyc == 2 && s != "**") $stop; if (cyc == 3 && s != "***") $stop; if (cyc == 4 && s != "****") $stop; if (cyc == 5 && s != "*****") $stop; if (cyc == 5) begin $write("*-* All Finished *-*\n"); $finish; end end endmodule