自己编写的使时钟不连续的测试代码-fork---join_none用法以及停止线程

//测试平台

`timescale  1ns/1psmodule   tb();  reg     clk;  reg     clk4;  reg     por;  reg     din_100;  reg     din_10;  reg     rx_en;    wire    din_w;  wire    din;  wire    din_100_en;  wire    din_10_en;  wire    rst;zdvc_vcd_interface m(  .clk(clk),  .clk4(clk4),  .por(por),  .din_100(din_100),  .din_10(din_10),  .rx_en(rx_en),  .din_w(din_w),  .din(din),  .din_100_en(din_100_en),  .din_10_en(rst));initial begin  $fsdbDumpfile("wave_test.fsdb");  $fsdbDumpvars; end//always #147.5 clk4 = ~clk4;initial begin  clk = 1'b0;  fork:genclk4    begin     forever #147.5 clk4 = ~clk4;    end  join_none  por = 1'b0;  clk4 = 1'b0;  din_100 = 1'b1;  din_10 = 1'b1;  rx_en = 1'b0;  # 590  por = 1'b1;  # 2360;    din_100 = 1'b0;  #47 din_100 = 1'b1;  #120 din_100 = 1'b0;     #100 din_100 = 1'b1;  #230 din_100 = 1'b0;  #200 din_100 = 1'b1;  #67 din_100 = 1'b0;  #120 din_100 = 1'b1;  #65 din_100 = 1'b0;   disable genclk4;   clk4 = 1'b0;  #5000 din_100 = 1'b1;      fork:gen2clk4      begin       forever #147.5 clk4 = ~clk4;      end    join_none  #66 din_100 = 1'b0;  #122 din_100 = 1'b1;  #80 din_100 = 1'b0;  #21 din_100 = 1'b1;  #83 din_100 = 1'b0;  #230 din_100 = 1'b1;  #3300 din_100 = 1'b1;  $stop;endendmodule

源代码//省略，呵呵，

波形可以看看哦，