A vector register provides the capability for simultaneously writing through {TAIL ~ at least two write ports} and {HEAD ~ simultaneous reading} from at least two read ports 
A vector register provides the capability for simultaneously writing through { TAIL ~ at least two write ports } and { HEAD ~ simultaneous reading } from at least two read ports
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH