帮我写一个jk触发器的testbench仿真代码

好的，假设你要测试的jk触发器是带异步清零和置位功能的，以下是一个简单的testbench仿真代码供参考：

module tb_jk_trigger;

  // Inputs
  reg clk, j, k, clr, set;
  
  // Outputs
  wire q, q_bar;
  
  // Instantiate the DUT
  jk_trigger jk_trigger(clk, j, k, clr, set, q, q_bar);
  
  initial begin
    // Initialize inputs
    clk = 0;
    j = 0;
    k = 0;
    clr = 0;
    set = 0;
    
    // Wait for 5 clock cycles before starting
    #5;
    
    // Test Case 1: Clear and Set inputs both high
    clr = 1;
    set = 1;
    #10;
    $display("Test Case 1: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 2: Clear and Set inputs both low
    clr = 0;
    set = 0;
    j = 0;
    k = 0;
    #10;
    $display("Test Case 2: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 3: J input high, K input low
    j = 1;
    k = 0;
    #10;
    $display("Test Case 3: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 4: J input low, K input high
    j = 0;
    k = 1;
    #10;
    $display("Test Case 4: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 5: J input and K input both high
    j = 1;
    k = 1;
    #10;
    $display("Test Case 5: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 6: J input and K input both low
    j = 0;
    k = 0;
    #10;
    $display("Test Case 6: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 7: Asynchronous clear input
    clr = 1;
    j = 1;
    k = 0;
    #10;
    clr = 0;
    #10;
    $display("Test Case 7: q=%d, q_bar=%d", q, q_bar);
    
    // Test Case 8: Asynchronous set input
    set = 1;
    j = 0;
    k = 1;
    #10;
    set = 0;
    #10;
    $display("Test Case 8: q=%d, q_bar=%d", q, q_bar);
    
    // End simulation
    $finish;
  end
  
  // Toggle the clock every 5 time units
  always #5 clk = ~clk;

endmodule

在这个testbench代码中，我们对jk触发器的所有输入输出信号进行了声明，并实例化了我们要测试的DUT（Design Under Test）。在initial块中，我们初始化了所有输入信号，并根据测试用例对它们进行了设置。我们使用$display命令来输出每个测试用例的输出结果。最后，我们使用always块来循环切换时钟信号，以便对触发器进行时钟驱动。$finish命令用于终止仿真。