class write_sequence_fixed extends uvm_sequence#(axi_seq_item);
	 `uvm_object_utils(write_sequence)
axi_seq_item txn;
  function new(string name = "write_sequence");
    super.new(name);
endfunction
  virtual task body();
        `uvm_info(get_type_name(), $sformatf("//---------------- FIXED SEQUENCE is started -----------------//"), UVM_MEDIUM)
        txn = axi_seq_item::type_id::create("txn");
        start_item(txn);
        assert(txn.randomize() with {awburst=2'b00;awlen=3;awsize=4};} );//FIXED
       	txn.wr_rd=1;
        finish_item(txn);
  endtask
endclass
class write_sequence_incremental extends uvm_sequence#(axi_seq_item);
	 `uvm_object_utils(write_sequence)
axi_seq_item txn;
  function new(string name = "write_sequence");
    super.new(name);
endfunction
  virtual task body();
        `uvm_info(get_type_name(), $sformatf("//---------------- INCREMENTAL SEQUENCE is started -----------------//"), UVM_MEDIUM)
        txn = axi_seq_item::type_id::create("txn");
        start_item(txn);
        assert(txn.randomize() with {awburst=2'b10;awaddr==awaddr+2**awsize};} );//INCREMENTAL
       	txn.wr_rd=1;
        finish_item(txn);
  endtask
endclass
class write_sequence_wrap extends uvm_sequence#(axi_seq_item);
	 `uvm_object_utils(write_sequence)
axi_seq_item txn;
  function new(string name = "write_sequence");
    super.new(name);
endfunction
  virtual task body();
        `uvm_info(get_type_name(), $sformatf("//---------------- WRAP SEQUENCE is started -----------------//"), UVM_MEDIUM)
        txn = axi_seq_item::type_id::create("txn");
        start_item(txn);
        assert(txn.randomize() with {awburst=2'b10;awlen=3;awsize=4};} );//WRAP
       	txn.write=1;
        finish_item(txn);
  endtask
endclass
class write_sequence extends uvm_sequence#(axi_seq_item);
	 `uvm_object_utils(write_sequence)
axi_seq_item txn;
  function new(string name = "write_sequence");
    super.new(name);
endfunction
  virtual task body();
        `uvm_info(get_type_name(), $sformatf("//---------------- WRITE SEQUENCE is started -----------------//"), UVM_MEDIUM)
        txn = axi_seq_item::type_id::create("txn");
        start_item(txn);
        assert(txn.randomize() with {foreach(awlen[i]) if(i==awlen+1) wlast==1};} );//for last transfer
       	txn.wr_rd=1;
        finish_item(txn);
  endtask
endclass