1 files changed, 18 insertions, 0 deletions
diff --git a/tests/xilinx_ug901/top_mux.v b/tests/xilinx_ug901/top_mux.v
new file mode 100644
index 000000000..c23c7491c
--- /dev/null
+++ b/tests/xilinx_ug901/top_mux.v
@@ -0,0 +1,18 @@
+// Multiplexer using case statement 
+module mux4 (sel, a, b, c, d, outmux);
+input [1:0] sel;
+input [1:0] a, b, c, d;
+output [1:0] outmux;
+reg [1:0] outmux;
+
+always @ *
+   begin 
+	   case(sel)
+		  2'b00 : outmux = a;
+      2'b01 : outmux = b;
+      2'b10 : outmux = c;
+      2'b11 : outmux = d;
+     endcase
+   end 
+endmodule
+