Create apb_error_addr_sequence.sv

Author: PRADEEPCHANGAL

apb_error_addr_sequence.sv

@@ -0,0 +1,42 @@
+class apb_error_addr_sequence extends uvm_sequence#(apb_transaction);
+  `uvm_object_utils(apb_error_addr_sequence)
+  
+   int last_addr;
+  
+  //constructor
+  function new(string name = "apb_error_addr_sequence");
+    super.new(name);
+  endfunction 
+  
+  virtual task body();
+    apb_transaction write_trans;
+    apb_transaction read_trans;
+    
+    //generate the write transaction 
+    write_trans = apb_transaction::type_id::create("write_trans");
+    write_trans.PSEL = 1;
+    write_trans.PWRITE = 1;
+    write_trans.PENABLE = 1;
+    //write_trans.PADDR = $urandom_range(0,25);
+    //write_trans.PWDATA = $urandom_range(5,50); 
+    start_item(write_trans);
+	write_trans.constraint_mode(0);
+    assert(write_trans.randomize() with {PADDR >33;});
+    last_addr = write_trans.PADDR;
+  `uvm_info("WSEQUENCE",$sformatf("Write Transaction Generated: PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d, PWDATA =%0d ", write_trans.PRESET,write_trans.PSEL,write_trans.PWRITE,write_trans.PENABLE,write_trans.PADDR,write_trans.PWDATA),UVM_LOW)
+    finish_item(write_trans);
+    #5;
+
+    //generate read transaction 
+    read_trans = apb_transaction::type_id::create("read_trans");
+    read_trans.PSEL = 1;
+    read_trans.PWRITE = 0;
+    read_trans.PENABLE = 1;
+    read_trans.PADDR = last_addr;
+    
+    start_item(read_trans);
+    `uvm_info("RSEQUENCE",$sformatf("Read Transaction Generated: PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d ", read_trans.PRESET,read_trans.PSEL,read_trans.PWRITE,read_trans.PENABLE,read_trans.PADDR),UVM_LOW)
+    finish_item(read_trans);
+
+  endtask
+endclass