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