Restructered pre-import

Old Pages/Electronics/FPGAExercise10code.md

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+Counter module to be used with the [Spartan 3E Board
+tutorial](http://wiki.hacdc.org/index.php/File:ISE_Tutorial_for_S3E.pdf).
+
+    module counter(clock, count_out);
+    input clock;
+    output [3:0] count_out;
+    reg [3:0] count_int=0;
+    reg [26:0] t=0;
+
+    always @(posedge clock)
+    if (t==4)
+        begin
+            count_int <= count_int + 1;
+            t=0;
+        end
+    else
+        t=t+1;
+
+    assign count_out=count_int;
+
+    endmodule
+
+[Category:FPGAWorkshop](Category:FPGAWorkshop "wikilink")