////////////////////////////////////////////////
////s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~s////
////s           www.testbench.in           s////
////s                                      s////
////s             VMM Tutorial             s////
////s                                      s////  
////s           gopi@testbench.in          s////
////s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~s////
////////////////////////////////////////////////


`include "vmm.sv"

class instruction extends vmm_data;
   vmm_log log;
   typedef enum {LOAD__A,LOAD__B,ADD_A_B,SUB_A_B,STORE_C } kinds_e;
   rand kinds_e inst;

   function new();
      super.new(this.log);
   endfunction:new

   virtual function string psdisplay(string prefix = "");

         psdisplay =  $psprintf("  Instruction :  | stream_id : 0 | scenario_id : 0 ",inst.name(),stream_id,scenario_id);
   endfunction:psdisplay

   virtual function vmm_data allocate();

      instruction tr = new;
      allocate = tr;

   endfunction:allocate

   virtual function vmm_data copy(vmm_data cpy = null);

      instruction to;

      // Copying to a new instance?
      if (cpy == null)
         to = new;
       else
         // Copying to an existing instance. Correct type?
         if (!$cast(to, cpy)) begin
            `vmm_fatal(this.log, "Attempting to copy to a non instruction instance");
            return null;
        end

      super.copy_data(to);

      to.inst = this.inst;

      copy = to;

   endfunction:copy

endclass

`vmm_channel(instruction)