The issue circuit issues an instruction to the execution circuit, and generates {TAIL ~ a control signal} responsive to whether or not the instruction is issued to {HEAD ~ the execution circuit} 
The issue circuit issues an instruction to the execution circuit , and generates { TAIL ~ a control signal } responsive to whether or not the instruction is issued to { HEAD ~ the execution circuit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD