When WRITE, CHRDY and RA1 all become “H”, an output signal from the NAND circuit becomes “H”, and {HEAD ~ a write current} flows through {TAIL ~ the write word line} 
flows through
When WRITE , CHRDY and RA1 all become “ H ” , an output signal from the NAND circuit becomes “ H ” , and { HEAD ~ a write current } flows through { TAIL ~ the write word line }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL