Vector adder 80 performs integer and floating point add or subtract operations on {HEAD ~ two 64 bit words} supplied from the vector register file 35 via {TAIL ~ RD PORT3} and RD PORT4 
supplied via
Vector adder 80 performs integer and floating point add or subtract operations on { HEAD ~ two 64 bit words } supplied from the vector register file 35 via { TAIL ~ RD PORT3 } and RD PORT4
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH