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`timescale 1us/1ns

// Output module just sets the board's displays

module io_output(input clk, input oe, input [12:0] value, input reset,

        output segA, output segB, output segC, output segD, output segE, output segF, output segG,

        output ds0, output ds1, output ds2, output ds3);

   wire [12:0] v;

        reg [12:0] val;

        // this does most of the real work

        DisplayHex leds(clk,reset,val,segA, segB, segC, segD, segE, segF, segG, ds0, ds1, ds2, ds3);

// convert all x's to 0's

// if you read uninit memory it shows up as x's in simulation

   assign v=((value===13'bxxxxxxxxxxxxx)?13'b0:value);

// digits

   always @(posedge clk)

     if (oe)

                 val<=v;

endmodule // io_output