why the body of sequence is running for one time, even if the repeat statement is used in it?.

Question

//body of transaction

class adder_transaction extends uvm_sequence_item;
  rand bit  [3:0]a0;
  rand bit  [3:0]b0;
  rand bit  doAdd0;
  bit  [3:0]result0;
 
	`uvm_object_utils(adder_transaction)
 
 
 
  function new(string name = "");
		super.new(name);
	endfunction
 
  constraint c{a0 inside {[1:15]};b0 inside {[1:15]};}
endclass

//body of sequence

class adder_sequence extends uvm_sequence#(adder_transaction);
     `uvm_object_utils(adder_sequence)
 
     function new(string name = "");
          super.new(name);
     endfunction: new
 
    task body();
      $display("body of sequence");
      repeat(15)
      begin
 
            sa_tx = adder_transaction::type_id::create("sa_tx");
               start_item(sa_tx);
                    assert(sa_tx.randomize());
               finish_item(sa_tx);
      end
     endtask: body
 
       endclass

Answer 1

MayurKubavat

Full Access

223 posts

September 15, 2016 at 6:24 am

In reply to swatisatpathy10:

Code looks good. Are you running any other sequence in parallel? Add display in loop, probably after finish_item() and check the output.

www.linkedin.com/in/mayurkubavat

Answer 2

cgales

Forum Moderator

1799 posts

September 15, 2016 at 2:33 pm

In reply to swatisatpathy10:

Don't use assert() when randomizing a transaction. Use an 'if' statement to determine if the randomization() call failed.

Are you calling raise_objection() and drop_objection() in your test? If the objections aren't handled correctly, the test sequences will end prematurely.

Answer 3

swatisatpathy10

Full Access

7 posts

September 30, 2016 at 12:15 am

In reply to MayurKubavat:

thank you for your reply.

I found the error. actually there was connection problem in my code, in agent block, so the code was not running.

Answer 4

swatisatpathy10

Full Access

7 posts

September 30, 2016 at 12:15 am

In reply to cgales:

Thank you very much for your reply

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