new project for tdc, copied code from blinky and changed structure

tdc/rtl/top.v

@@ -0,0 +1,17 @@
+`default_nettype  none
+
+module top(i_clk, o_led, lcol1);
+   parameter WIDTH = 24;
+   input wire i_clk;
+   output wire o_led;
+   output wire lcol1;
+
+   reg [WIDTH-1:0] counter;
+
+   always @(posedge i_clk)
+      counter <= counter + 1'b1;
+
+   assign o_led = counter[WIDTH-1];
+   assign lcol1 = 1'b0;
+endmodule
+