time_sim.tv

实用的程序代码

// VERILOG TestFixture Template produced by ngd2ver M1.4.12
// Design file: time_sim.nga
// Date:Tue Jan  6 19:28:32 1998

// ATTENTION: This file was created by NGD2VER and may therefore be overwritten
// by subsequent runs of NGD2VER. Xilinx recommends that you copy this file to
// a new name, or 'paste' this text into another file, to avoid accidental loss
// of data.

`timescale 1 ns/1 ps

module test;
  reg A;
  reg B;
  reg C;
  reg D;
  wire MUX_OUT;
  reg [1:0] SEL;

  reg GTS;
  `define GTS_SIGNAL test.GTS

  if_ex uut ( .A (A) , .B (B) , .C (C) , .D (D) 
, .MUX_OUT (MUX_OUT) , .SEL (SEL) );

  initial begin
    $timeformat(-9,3,"ns",12);
    $shm_open("time_sim.shm");
    $shm_probe("AS");
  end

  initial begin
    $display("           T ABCDMS");
    $display("           i     UE");
    $display("           m     XL");
    $display("           e     _[");
    $display("                 O1");
    $display("                 U:");
    $display("                 T0");
    $display("                  ]");
    $monitor("%t",$realtime,, A, B, C, D, MUX_OUT, "%h", SEL );
  end

  initial begin
      `GTS_SIGNAL = 0;
    #100
      A = 0 ;
      B = 0 ;
      C = 0 ;
      D = 0 ;
      SEL = 0 ;
    #1000 $stop;
    // #1000 $finish;
  end

endmodule