anchor.diff:        
         serverRequest.enq(RRec{req:request.req, pa:physAddr, client:request.client, rename_tag:extend(rename_tag)});
         if (verbose) $display("mkMemReadInternal::checkMmuResp: client=%d, tag=%d rename_tag=%d burstLen=%d", request.client, request.req.tag, rename_tag, burstLenBeats);
  -      if (verbose) $display("mkMemReadInternal::mmuResp %d %d", request.client, cycle_cnt-last_mmuResp);
  -      last_mmuResp <= cycle_cnt;
      endrule
      
      rule read_data;
  
positive.code: 
     Reg#(Bit#(64)) cycle_cnt <- mkReg(0);
     Reg#(Bit#(64)) last_loadClient <- mkReg(0);
     Reg#(Bit#(64)) last_mmuResp <- mkReg(0);
  
     (* fire_when_enabled *)
     rule cycle;
  
negative.code:    // performance analytics 
     Reg#(Bit#(64)) cycle_cnt <- mkReg(0);
     Reg#(Bit#(64)) last_loadClient <- mkReg(0);
     Reg#(Bit#(64)) last_comp <- mkReg(0);
     Reg#(Bit#(64)) last_readReq <- mkReg(0);
     Reg#(Bit#(64)) last_readData <- mkReg(0);
  