1 files changed, 21 insertions, 0 deletions
diff --git a/src/top.v b/src/top.v
new file mode 100644
index 0000000..8dc9684
--- /dev/null
+++ b/src/top.v
@@ -0,0 +1,21 @@
+module top (
+	input clk,
+	input key,
+	output [5:0] led
+);
+
+reg [25:0] ctr_q;
+wire [25:0] ctr_d;
+
+// Sequential code (flip-flop)
+always @(posedge clk) begin
+	if (key) begin
+		ctr_q <= ctr_d;
+	end
+end
+
+// Combinational code (boolean logic)
+assign ctr_d = ctr_q + 1'b1;
+assign led = ctr_q[25:20];
+
+endmodule