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SV Help ! how can dump the wave from class ?

phoenixson

Hi, all

 Now I define a class ,and initiate it to a new class varible, I want to dump  some signals from it , how can I get that ? 

 

Parents

  •  
    Hi,

    You simply need to probe the class variable in order to view its fields in the
    SimVision Waveform window.

    For example, using the following testcase:

    //test.sv
    module top;

      class c1;
        int i;
      endclass

      c1 o1 = new;

      initial
      begin
        #50 o1.i++;
        #50 o1.i++;
        #50 o1.i++;
        #50 o1.i++;
      end

    endmodule


    Invoke irun with this command:

    irun test.sv -access +rwc -input input.tcl

    ...with an "input.tcl" file with the following contents:

    database -open waves -into waves.shm -default
    probe -create top.o1 -depth all -database waves
    run
    exit


    When simulation completes, you can invoke SimVision ("simvision waves.shm")
    and send the class variable "top.o1" to the Waveform window.  Expand "o1" in
    the Waveform window and you can see the value of "o1.i" over time.

    Good luck.

    - Doug

Reply

  •  
    Hi,

    You simply need to probe the class variable in order to view its fields in the
    SimVision Waveform window.

    For example, using the following testcase:

    //test.sv
    module top;

      class c1;
        int i;
      endclass

      c1 o1 = new;

      initial
      begin
        #50 o1.i++;
        #50 o1.i++;
        #50 o1.i++;
        #50 o1.i++;
      end

    endmodule


    Invoke irun with this command:

    irun test.sv -access +rwc -input input.tcl

    ...with an "input.tcl" file with the following contents:

    database -open waves -into waves.shm -default
    probe -create top.o1 -depth all -database waves
    run
    exit


    When simulation completes, you can invoke SimVision ("simvision waves.shm")
    and send the class variable "top.o1" to the Waveform window.  Expand "o1" in
    the Waveform window and you can see the value of "o1.i" over time.

    Good luck.

    - Doug

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