Merge pull request #3203 from YosysHQ/micko/sim_ff

Simulation for various FF types

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/sim/tb/tb_sdff.v b/tests/sim/tb/tb_sdff.v
new file mode 100755
index 000000000..f8e2a1c9d
--- /dev/null
+++ b/tests/sim/tb/tb_sdff.v
@@ -0,0 +1,48 @@
+`timescale 1ns/1ns 
+module tb_sdff();
+	reg clk = 0;
+	reg rst = 0;
+	reg d = 0;
+	wire q;
+
+	sdff uut(.clk(clk),.d(d),.rst(rst),.q(q));
+
+	always
+		#(5) clk <= !clk;
+
+	initial
+	begin
+		$dumpfile("tb_sdff");
+		$dumpvars(0,tb_sdff);
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		rst = 1;
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		rst = 0;
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		d = 1;
+		#10
+		d = 0;
+		#10
+		$finish;
+	end
+endmodule