The log memory is formed of a plurality of banks, and stores history information in the plurality of {HEAD ~ banks} in {TAIL ~ a ring} like fashion 
The log memory is formed of a plurality of banks , and stores history information in the plurality of { HEAD ~ banks } in { TAIL ~ a ring } like fashion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH