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|1. (WO2018100331) STORAGE CIRCUITRY RESPONSIVE TO A TAG-MATCHING COMMAND|
ELSASSER, Wendy Arnott
|Title:||STORAGE CIRCUITRY RESPONSIVE TO A TAG-MATCHING COMMAND|
Storage circuitry (64) comprises an array (32) of storage locations (34) arranged in rows and columns, a row buffer (36) comprising a plurality of entries (68) each to store information from a storage location at a corresponding column of an active row (46) of the array (32), and comparison circuitry (70) responsive to a tag-matching command specifying a tag value (72) to compare the tag value with information stored in each of a subset of two or more entries (68) of the row buffer (36). The comparison circuitry (70) identifies which of the subset of entries, if any, is a matching entry storing information matching the tag value. This allows memory technologies such as DRAM to be used more efficiently as a set-associative cache.