public void TRR() {
        pcIncrease();
        getALU().OP1.set(SelectRegister().get());
        getRF().set(getXF().get());
        getALU().OP2.set(SelectRegister().get());
        if (getALU().OP1.get().equals(getALU().OP2.get())) {
            //set cc(4) to 1
            getCC().setBit(4, "1");
        } else {
            // set cc(4) to 0
            getCC().setBit(4, "0");
        }
        
      String test = getCC().get();
    }