You are asked to design a new processor with a 64-bit word. Taking advantage of advances in technology, you decide that you can allocate an extra 5 bits to each word. That is, data words in registers and memory will occupy 69 bits. The additional 5 bits will be used to describe the data. How might you allocate these additional bits (i.e., what functions would you assign to them) in the light of what you have read in the previous chapters?