1 files changed, 42 insertions, 0 deletions
diff --git a/fpga-toolchain/experiments/top.v b/fpga-toolchain/experiments/top.v
new file mode 100644
index 0000000..421c0a4
--- /dev/null
+++ b/fpga-toolchain/experiments/top.v
@@ -0,0 +1,42 @@
+// Blink an LED provided an input clock
+/* module */
+module top (hwclk, mosi, led1, led2, led3, led4, led5, led6, led7, led8, clkout , out);
+   /* I/O */
+   input hwclk;
+   input mosi;
+   output led1;
+   output led2;
+   output led3;
+   output led4;
+   output led5;
+   output led6;
+   output led7;
+   output led8;
+	 output clkout;
+	 output out;
+	 wire 	clkout;
+	 
+   /* Counter register */
+   reg [31:0] counter = 32'b0;
+   reg [8:0] 	shiftreg = 9'b1;
+
+   /* LED drivers */
+   assign led1 = shiftreg[0];
+   assign led2 = shiftreg[1];
+   assign led3 = shiftreg[2];
+   assign led4 = shiftreg[3];
+   assign led5 = shiftreg[4];
+   assign led6 = shiftreg[5];
+   assign led7 = shiftreg[6];
+   assign led8 = shiftreg[7];
+
+	 assign clkout = hwclk;
+	 assign out = shiftreg[8];
+
+   /* always */
+   always @ (negedge hwclk)
+		 begin
+    		shiftreg = (shiftreg << 1) + mosi;
+		 end
+
+endmodule