class mcureg_monitor;

  virtual mcureg_if	mif;
  virtual spi_if	wif;
  virtual sram_if	xif;

  static int		pktnum;

  //Mask Cache
  bit[3 :0]		mask_temp[$];

  //Collected Vars
  mcureg_trans		mcu_tr[$];
 

  function new();
  endfunction
  extern task do_mon();
  extern task collect();

endclass : mcureg_monitor 

task mcureg_monitor::do_mon();
    int		pkt_i=0;

    fork

      while(1) begin:  mcureg_monitor
	if(pkt_i==pktnum) break;
	if(wif.csn) @(negedge wif.csn);
	collect();
      end:  mcureg_monitor

      repeat(pktnum) begin: kill_progress
	@(negedge wif.csn);
	pkt_i++;
      end  

    join

endtask: do_mon


task mcureg_monitor::collect();
    mcureg_trans	mcu_tr_temp;
    bit[31:0]		cmd_temp;
    int			size=0;
    int			i=0,j=0;

        for(j=0;j<31;j++) begin
	  @(posedge wif.sclk or posedge wif.csn)
	  if(wif.error_check | wif.csn) 
	    break;
	  cmd_temp[j] = wif.mosi;
	end
  	size = cmd_temp[1] ? 16 : 1; 

	mcu_tr.delete;
	j=0;
        repeat(size) begin

	  mcu_tr_temp = new();

	  //if read, collect regfile's input port as exp_data 
	  //act_data is monitored by spi_monitor(MISO)
	  if(cmd_temp[0]) begin:  mcureg_in_monitor
	    //get the "mask" @ the last write_enable
	    //because registers update "mask" only @ "wren"
	    mcu_tr_temp.wrmask	   = mask_temp[j];
	    @(posedge xif.rden);
	    repeat(1) @(posedge wif.clk);
	    mcu_tr_temp.mcu_param  = mif.mcu_param;
	    mcu_tr_temp.run_time   = mif.run_time;
	    mcu_tr_temp.instr_num  = mif.instr_num;
	    mcu_tr_temp.fb_st_info = mif.fb_st_info;
          end:  mcureg_in_monitor

	  //if write, collect regfile's output port as act_data
	  //exp_data is monitored by spi_monitor(MOSI)
	  else begin:  mcureg_out_monitor
	    @(posedge xif.wren);
	    repeat(2) @(posedge wif.clk);
	    mcu_tr_temp.wrmask     = mif.wrmask;
	    mask_temp[j]	   = mif.wrmask;
	    //wait half_clk to sample output port,for stability
	    @(negedge wif.clk);
	    mcu_tr_temp.mcu_result = mif.mcu_result;
	    mcu_tr_temp.mcu_cwfr   = mif.mcu_cwfr;
	    mcu_tr_temp.mcu_gapr   = mif.mcu_gapr;
	    mcu_tr_temp.mcu_ampr   = mif.mcu_ampr;
	    mcu_tr_temp.mcu_baisr  = mif.mcu_baisr;
 	    mcu_tr_temp.mcu_intp_sel    = mif.mcu_intp_sel;
	    mcu_tr_temp.mcu_nco_pha_clr = mif.mcu_nco_pha_clr;
	    mcu_tr_temp.mcu_rz_pha	= mif.mcu_rz_pha;
	  end:  mcureg_out_monitor

	  mcu_tr.push_back(mcu_tr_temp);
	  j++;
	  //$display("cmd:%0d",cmd_temp[0]);
	  //$display("size:%0d",size);
	  //$display("mcu_param[0]:%d",mcu_tr_temp.mcu_param[0]);
	  //$display("wrmask:%0d",mcu_tr_temp.wrmask);
        end

	if(cmd_temp[0] & !wif.csn) @(posedge wif.csn);

endtask