Subversion Repositories wb_size_bridge

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//// Copyright (C) 2009 Authors and OPENCORES.ORG                 ////
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//////////////////////////////////////////////////////////////////////
 
`timescale 1ns/10ps
 
 
module tb_top();
 
  parameter CLK_PERIOD = 10;
 
  reg tb_clk, tb_rst;
 
  initial 
    begin
      tb_clk <= 1'b1;      
      tb_rst <= 1'b1;
 
      #(CLK_PERIOD); #(CLK_PERIOD/3);
      tb_rst = 1'b0;
 
    end
 
  always
    #(CLK_PERIOD/2) tb_clk = ~tb_clk;
 
// --------------------------------------------------------------------
// tb_dut
  tb_dut dut( tb_clk, tb_rst );
 
 
// --------------------------------------------------------------------
// insert test below
 
  initial
    begin
 
      wait( ~tb_rst );
 
      repeat(2) @(posedge tb_clk); 
 
      // 8 bit if    
      $display("\n^^^- testing 8 bit interface\n");
 
      dut.wbm.wb_cmp(0, 0, 32'h6000_0000, 32'h3322_1100);
      dut.wbm.wb_cmp(0, 0, 32'h6000_0004, 32'h7766_5544);
      dut.wbm.wb_cmp(0, 0, 32'h6000_0008, 32'hbbaa_9988);
      dut.wbm.wb_cmp(0, 0, 32'h6000_000c, 32'hffee_ddcc);
 
      dut.wbm.wb_write(0, 0, 32'h6000_0010, 32'habba_beef);
      dut.wbm.wb_write(0, 0, 32'h6000_0014, 32'h1a2b_3c4d); 
      dut.wbm.wb_write(0, 0, 32'h6000_0018, 32'hcafe_1a7e);
      dut.wbm.wb_write(0, 0, 32'h6000_001c, 32'h5a5a_0f0f); 
 
      dut.wbm.wb_cmp(0, 0, 32'h6000_0010, 32'habba_beef);
      dut.wbm.wb_cmp(0, 0, 32'h6000_0014, 32'h1a2b_3c4d); 
      dut.wbm.wb_cmp(0, 0, 32'h6000_0018, 32'hcafe_1a7e);
      dut.wbm.wb_cmp(0, 0, 32'h6000_001c, 32'h5a5a_0f0f); 
 
      dut.wbm.wb_write_sel(0, 0, 4'b0001, 32'h6000_0010, 32'hxxxx_xx00);
      dut.wbm.wb_write_sel(0, 0, 4'b0010, 32'h6000_0014, 32'hxxxx_11xx);
      dut.wbm.wb_write_sel(0, 0, 4'b0100, 32'h6000_0018, 32'hxx22_xxxx);
      dut.wbm.wb_write_sel(0, 0, 4'b1000, 32'h6000_001c, 32'h33xx_xxxx);
 
      dut.wbm.wb_cmp_sel(0, 0, 4'b0001, 32'h6000_0010, 32'hxxxx_xx00);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0010, 32'h6000_0014, 32'hxxxx_11xx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0100, 32'h6000_0018, 32'hxx22_xxxx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1000, 32'h6000_001c, 32'h33xx_xxxx);
 
      dut.wbm.wb_write_sel(0, 0, 4'b0011, 32'h6000_0000, 32'hxxxx_0ab1);
      dut.wbm.wb_write_sel(0, 0, 4'b1100, 32'h6000_0004, 32'h2cd3_xxxx);
      dut.wbm.wb_write_sel(0, 0, 4'b0011, 32'h6000_0008, 32'hxxxx_4ef5);
      dut.wbm.wb_write_sel(0, 0, 4'b1100, 32'h6000_000c, 32'h0f0f_xxxx);
 
      dut.wbm.wb_cmp_sel(0, 0, 4'b0011, 32'h6000_0000, 32'hxxxx_0ab1);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1100, 32'h6000_0004, 32'h2cd3_xxxx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0011, 32'h6000_0008, 32'hxxxx_4ef5);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1100, 32'h6000_000c, 32'h0f0f_xxxx);
 
      // 16 bit if
      $display("\n^^^- testing 16 bit interface\n");
 
      dut.wbm.wb_cmp(0, 0, 32'ha000_0000, 32'h3322_1100);
      dut.wbm.wb_cmp(0, 0, 32'ha000_0004, 32'h7766_5544);
      dut.wbm.wb_cmp(0, 0, 32'ha000_0008, 32'hbbaa_9988);
      dut.wbm.wb_cmp(0, 0, 32'ha000_000c, 32'hffee_ddcc);
 
      dut.wbm.wb_write(0, 0, 32'ha000_0010, 32'habba_beef);
      dut.wbm.wb_write(0, 0, 32'ha000_0014, 32'h1a2b_3c4d); 
      dut.wbm.wb_write(0, 0, 32'ha000_0018, 32'hcafe_1a7e);
      dut.wbm.wb_write(0, 0, 32'ha000_001c, 32'h5a5a_0f0f); 
 
      dut.wbm.wb_cmp(0, 0, 32'ha000_0010, 32'habba_beef);
      dut.wbm.wb_cmp(0, 0, 32'ha000_0014, 32'h1a2b_3c4d); 
      dut.wbm.wb_cmp(0, 0, 32'ha000_0018, 32'hcafe_1a7e);
      dut.wbm.wb_cmp(0, 0, 32'ha000_001c, 32'h5a5a_0f0f); 
 
      dut.wbm.wb_write_sel(0, 0, 4'b0011, 32'ha000_0000, 32'hxxxx_0ab1);
      dut.wbm.wb_write_sel(0, 0, 4'b1100, 32'ha000_0004, 32'h2cd3_xxxx);
      dut.wbm.wb_write_sel(0, 0, 4'b0011, 32'ha000_0008, 32'hxxxx_4ef5);
      dut.wbm.wb_write_sel(0, 0, 4'b1100, 32'ha000_000c, 32'h0f0f_xxxx);
 
      dut.wbm.wb_cmp_sel(0, 0, 4'b0011, 32'ha000_0000, 32'hxxxx_0ab1);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1100, 32'ha000_0004, 32'h2cd3_xxxx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0011, 32'ha000_0008, 32'hxxxx_4ef5);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1100, 32'ha000_000c, 32'h0f0f_xxxx);
 
      dut.wbm.wb_write_sel(0, 0, 4'b0001, 32'h0000_0010, 32'hxxxx_xx00);
      dut.wbm.wb_write_sel(0, 0, 4'b0010, 32'h0000_0014, 32'hxxxx_11xx);
      dut.wbm.wb_write_sel(0, 0, 4'b0100, 32'h0000_0018, 32'hxx22_xxxx);
      dut.wbm.wb_write_sel(0, 0, 4'b1000, 32'h0000_001c, 32'h33xx_xxxx);
 
      dut.wbm.wb_cmp_sel(0, 0, 4'b0001, 32'h0000_0010, 32'hxxxx_xx00);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0010, 32'h0000_0014, 32'hxxxx_11xx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b0100, 32'h0000_0018, 32'hxx22_xxxx);
      dut.wbm.wb_cmp_sel(0, 0, 4'b1000, 32'h0000_001c, 32'h33xx_xxxx);
 
      // do illegal byte boundary access
      $display("\n^^^- testing illegal byte boundary access\n");
      dut.wbm.wb_write_sel(0, 0, 4'b0110, 32'ha000_0020, 32'hxxba_adxx);
 
      repeat(2) @(posedge tb_clk); 
 
      $display("\n^^^---------------------------------\n");
      $display("^^^- Testbench done. %t.\n", $time);
 
      $stop();
 
    end
 
endmodule