updated gitignore, updated testbench, added beginnings of synthesis testing

1 files changed, 48 insertions, 0 deletions

diff --git a/multiplier/hvl/tb_multiplier.sv b/multiplier/hvl/tb_multiplier.sv
new file mode 100644
index 0000000..f9dcf2c
--- /dev/null
+++ b/multiplier/hvl/tb_multiplier.sv
@@ -0,0 +1,48 @@
+`default_nettype none
+`timescale 1ns/1ps
+`define NUMTESTS 100000
+
+module tb_multiplier();
+
+logic [31:0] a;
+logic [31:0] b;
+logic [63:0] c;
+logic [63:0] product;
+
+multiplier dut (a, b, c);
+
+int i;
+initial begin
+
+	$fsdbDumpfile("dump.fsdb");
+	$fsdbDumpvars(0, "+all");
+
+	for (i = 0; i < `NUMTESTS; i=i+1) begin
+		a = $urandom();
+		b = $urandom();
+		product = a * b;
+		#10;
+		if (product != c) begin
+			$displayh("A: %0d", a);
+			$displayh("B: %0d", b);
+			$displayh("C: %0d", c);
+			$displayh("EXPTECTED: %0d", product);
+			$error("TEST FAILED");
+		end
+		else if (i % 1000 == 0) begin
+			$display("Test %d passed", i);
+			$displayh("A:         %0d", a);
+			$displayh("B:         %0d", b);
+			$displayh("C:         %0d", c);
+			$displayh("EXPTECTED: %0d", product);
+		end
+	end
+
+	$display("TEST PASSES");
+
+	$finish;
+end
+
+
+
+endmodule