1 files changed, 49 insertions, 0 deletions
diff --git a/collatz/collatz_tb.v b/collatz/collatz_tb.v
new file mode 100644
index 0000000..c56b13c
--- /dev/null
+++ b/collatz/collatz_tb.v
@@ -0,0 +1,49 @@
+`timescale 1 ns / 10 ps
+
+module collatz_tb ();
+  reg  clk = 0;
+  reg  rst = 0;
+
+  wire idle;
+
+  localparam integer DURATION = 500_000;
+
+  always begin
+    #41.667;
+    clk = ~clk;
+  end
+
+  reg [24:0] n = 1_000_000;
+  reg start_int;
+
+  wire [24:0] count_out;
+
+  collatz #(
+      .WIDTH(32)
+  ) ctz (
+      .clk(clk),
+      .rst(rst),
+      .in_start(n),
+      .start_int(start_int),
+      .o_count(count_out),
+      .idle(idle)
+  );
+
+  initial begin
+    #10 rst = 1'b1;
+    #1 rst = 1'b0;
+  end
+
+  initial begin
+    $dumpfile("collatz_tb.vcd");
+    $dumpvars(0, collatz_tb);
+
+    #50 start_int = 1;
+    #10 start_int = 0;
+
+    #(DURATION);
+    $display("Finished!");
+    $finish;
+  end
+
+endmodule