In this manner, fair arbitration is assured for other CPUs contending for {HEAD ~ control} of {TAIL ~ the system bus} 
of
In this manner , fair arbitration is assured for other CPUs contending for { HEAD ~ control } of { TAIL ~ the system bus }
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 TAIL