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io_probe_in 
 #(.MESG         ("multiply error"),
   .WIDTH        (32)
  )
rdata_tpb
  (
  .clk            (  clk        ),
  .expected_value (  mul_prod_exp[31:0]  ),
  .mask           (  {32{mask}} ),
  .signal         (  mul_prod_r[31:0]      )
  );      

`ifndef SYNTHESIS

  task u_cmp;
    input  [31:0] a_in;
    input  [31:0] b_in;
    input  [31:0] exp;

     begin
      test.a_in <= a_in;
      test.b_in <= b_in;
      test.mul_prod_exp <= exp;
      test.alu_op_mul  <= 1'b1;
      test.ex_freeze    <= 1'b1;
      test.cg.next(1);
      while(mul_stall)        test.cg.next(1);
      test.mask  <= 1'b1;
      $display("%t %m   cycle %x %x %x",$realtime,a_in,b_in,exp );
      test.alu_op_mul  <= 1'b0;
      test.ex_freeze   <= 1'b0;
      test.cg.next(1);
      test.mask  <= 1'b0;
        
   end
  endtask

`endif



assign STOP = 1'b0;
assign BAD = 1'b0;