problem generating VCD file about a part of a design

[always84]

Hello i'm making synthesis of a part of my design, i want to record the switching activity only of this part of design, than generate a saif file from VCD generated in modelsim. My problem is, how can I do to record the switching activity in the VCD file, for only a part of my design?

"a part of my design" means that I want to recor the switching activity for some instances not for all of them.

 

[cvc]

Hello i'm making synthesis of a part of my design, i want to record the switching activity only of this part of design, than generate a saif file from VCD generated in modelsim. My problem is, how can I do to record the switching activity in the VCD file, for only a part of my design?

"a part of my design" means that I want to recor the switching activity for some instances not for all of them.

Use

  initial begin : dump_parts
    $dumpvars (1, top.my_dut.blk_I_want_to_dump_1);
  end : dump_parts

HTH
TeamCVC
www.cvcblr.com/blog

 

[always84]

Thanks for you reply, I've solved my problem with a script that simply put vcd add commands sequentially, one command for one subdesign that I want to record switching activity. I didn't know that i can put vcd add command more than one time, so I can add switching activity for all the modules that I like to control, and all the information is in a file that i create with vcd file command.