Add fpga-xc3s100e and icopyx support

fpga-xc3s100e/clk_divider.v

@@ -0,0 +1,25 @@
+//-----------------------------------------------------------------------------
+// Copyright (C) 2014 iZsh <izsh at fail0verflow.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+module clk_divider(input clk, input [7:0] divisor, output [7:0] div_cnt, output div_clk);
+
+    reg [7:0] div_cnt_ = 0;
+    reg div_clk_;
+    assign div_cnt = div_cnt_;
+    assign div_clk = div_clk_;
+
+    always @(posedge clk)
+    begin
+        if(div_cnt == divisor) begin
+            div_cnt_ <= 8'd0;
+            div_clk_ = !div_clk_;
+        end else
+            div_cnt_ <= div_cnt_ + 1;
+    end
+
+endmodule
+