Setting a sequence item Param from another sequence

UVM
8

In reply to UVM_learner6:

It should work. I hope width of data is sufficient to hold the ab. For example, a,b are 32 bit then data should be at least 64bit(data=ab). This is just an example code. Please check variables width in your code.


class myPacket;
  rand  int a,b;
  constraint c1 { a inside {[1:10]}; b inside {[1:10]}; }
  
  function display ();
    $display ("a : 0x%0h b : 0x%0h", a, b);
  endfunction
endclass
 
class myPacket_1;
 
  rand int a,b;
  rand bit[63:0] data;
  constraint c1 { data==a*b; }
  
  function display ();
    $display ("data : 0x%0h, a : 0x%0h b : 0x%0h", data, a, b);
  endfunction
endclass

module tb_top;
  myPacket pkt;
  myPacket_1 pkt_1;
 
  initial begin
    pkt = new ();
    pkt.randomize ();
    pkt.display ();

    pkt_1 = new();
    pkt_1.randomize () with { a==pkt.a; b==pkt.b; };
    pkt_1.display ();     
  end
endmodule