Dynamic cache row fail accumulation due to catastrophic failure

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United States of America Patent

PATENT NO 9645904
SERIAL NO

15247239

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Abstract

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A technique is provided for accumulating failures. A failure of a first row is detected in a group of array macros, the first row having first row address values. A mask has mask bits corresponding to each of the first row address values. The mask bits are initially in active status. A failure of a second row, having second row address values, is detected. When none of the first row address values matches the second row address values, and when mask bits are all in the active status, the array macros are determined to be bad. When at least one of the first row address values matches the second row address values, mask bits that correspond to at least one of the first row address values that match are kept in active status, and mask bits that correspond to non-matching first address values are set to inactive status.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fee, Michael F Cold Spring, US 41 149
Meaney, Patrick J Poughkeepsie, US 124 1372
O'Neill,, Jr Arthur J Poughkeepsie, US 36 247

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