anchor.diff:  import NopEngine::*;
   
   interface RingRequest;
  -   method Action set(Bit#(1) cmd, Bit#(2) regist, Bit#(32) addr);
  -   method Action get(Bit#(1) cmd, Bit#(2) regist);
  +   method Action set(Bit#(1) cmd, Bit#(3) regist, Bit#(32) addr);
  +   method Action get(Bit#(1) cmd, Bit#(3) regist);
      method Action hwenable(Bit#(1) en);
      method Action doCommandIndirect(Bit#(32) addr);
      method Action doCommandImmediate(Bit#(64) data);
   endinterface
   
   interface RingIndication;
  -   method Action setResult(Bit#(1) cmd, Bit#(2) regist, Bit#(32) addr);
  -   method Action getResult(Bit#(1) cmd, Bit#(2) regist, Bit#(32) addr);
  +   method Action setResult(Bit#(1) cmd, Bit#(3) regist, Bit#(32) addr);
  +   method Action getResult(Bit#(1) cmd, Bit#(3) regist, Bit#(32) addr);
      method Action completion(Bit#(32) command, Bit#(32) tag);
   endinterface
   
  
positive.code: 	 indication.setResult(cmd, regist, addr);
        endmethod
     
        method Action get(Bit#(1) _cmd, Bit#(2) regist);
  	 if (_cmd == 1)
  	    indication.getResult(1, regist, 
  	       cmdRing.configifc.get(regist));
  	 else
  	    indication.getResult(0, regist, 
  	       statusRing.configifc.get(regist));
  
negative.code: 	 hwenabled <= en == 1;
        endmethod
     
  endmodule