Init

.gitignore

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+obj_dir/
+*.vcd

overture.sv

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+module overture(
+		in,
+		out
+	);
+
+	input [7:0] in;
+	output reg [7:0] out;
+
+	always@(*) begin
+		foreach (input[i]) begin
+			out[i] = !in[i]
+		end
+	end
+endmodule

overture_tb.sv

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+module overture_tb;
+	reg [7:0] in;
+	reg [7:0] out;
+	overture dut(in, out);
+
+	initial begin
+		$dumpfile("overture_dump.vcd");
+		$dumpvars();
+		in = 8'b00000001;
+		out = 8'b00000000;
+
+		#10;
+
+		#10;
+		in = 8'b11111111;
+		#10;
+		in = 8'b00000001;
+		#10;
+
+		$finish;
+	end
+endmodule

run.sh

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+#!/bin/sh
+
+# Compile simulation and dump with timing for waveform analysis
+verilator --binary overture.sv overture_tb.sv --top overture_tb --trace-vcd --timing
+
+# Run compiled simulation
+./obj_dir/Voverture_tb
+
+# Close old session
+pkill gtkwave
+
+# Launch new session
+gtkwave overture_dump.vcd &