Subversion Repositories rs_encoder_decoder

`timescale 1ns / 10 ps

module GF8GenInverse_testbench;

  reg  clk_i,rst_i;

  wire [7:0] inv_o;

  wire valid_o;

  reg [7:0]  inv_i;

  reg valid_i;

  reg [126*7:0]  path,input_file,output_file;

  reg [7:0] cntr;

  integer    fd_in,fd_out;

GF8Inverse DUT(.clk_i(clk_i),.rst_i(rst_i),

  .valid_i(valid_i),

  .inv_i(inv_i),

  .valid_o(valid_o),

  .inv_o(inv_o));

   always @(posedge clk_i) begin

     if (rst_i) begin

       cntr <= 0;

     end else if (valid_o) begin

       cntr <= 0;

     end else begin

       cntr <= cntr+1;

     end

  end

always

#5 clk_i = !clk_i;

  initial begin

    path = "./";

    input_file = "input_file_GF8Inverse.dat";

    output_file = "output_file_GF8Inverse.dat";

    fd_in = $fopen(input_file,"r");

    fd_out = $fopen(output_file,"w");

    clk_i = 0;

    rst_i = 1;

    #10 rst_i = 0;

   while(!$feof(fd_in))

     begin

       @(negedge clk_i);

         if(cntr == 1) begin

           valid_i = 1;

         end else begin

           valid_i = 0;

         end

         if(valid_i) begin

           $fscanf(fd_in,"%d\n",inv_i);

           $fwrite(fd_out,"%d\n",inv_o);

                                        end

     end

  end // initial begin

endmodule