A semiconductor memory device is provided with a plurality of primary memory cell blocks and a replacement memory cell block identical in {TAIL ~ size} to {HEAD ~ the primary memory cell blocks} 
A semiconductor memory device is provided with a plurality of primary memory cell blocks and a replacement memory cell block identical in { TAIL ~ size } to { HEAD ~ the primary memory cell blocks }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD