Improving reliability, availability, and serviceability in a memory device

The name of the invention is improvement of memory device reliability usability and maintainability. The embodiment of this invention relates generally to improve memory device and the reliability usability and maintainability. The first embodiment in memory device comprises data storing position of the first part and storing data corresponding to the position of the error correcting code ecc the position of the second part of the memory core. Memory device can also in the memory core on the same chip comprises an error correction logic part. In some embodiments in error correction logic part makes the storage device can be calculated and the ecc position of the stored ecc position and the calculated position of the ecc comparing.