In addition, program code responsive to {HEAD ~ a read command} from {TAIL ~ a host} directed to a memory location determines whether data for that memory location has been buffered in a cache before executing the read for that location 
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In addition , program code responsive to { HEAD ~ a read command } from { TAIL ~ a host } directed to a memory location determines whether data for that memory location has been buffered in a cache before executing the read for that location
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH