Sheldon, I must have selective vision... I only saw the line: No setting required default is 1 ?????

All of these questions can be found in the data sheet for the processor you are using. I onlyhave a few minutes each day that I devote to the forum and if I have to explain the use of each register and all of the options it would take me an 1/2 hour.... Sorry.... Like I said, all of your questions can be answered in the data sheet....