Each of the primary memory blocks has a laser fuse that will disable the associated primary memory block and enable the replacement memory block such that {HEAD ~ the total amount} of {TAIL ~ logical memory} in the memory device is unaffected by a defective primary block 
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Each of the primary memory blocks has a laser fuse that will disable the associated primary memory block and enable the replacement memory block such that { HEAD ~ the total amount } of { TAIL ~ logical memory } in the memory device is unaffected by a defective primary block
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 OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH