original_query: What is the purpose of using a sum-addressed decoder (SAD) or sum-addressed memory (SAM) decoder in CPU design?
query: What is the purpose of using a sum-addressed decoder (SAD) or sum-addressed memory (SAM) decoder in CPU design?
answer: In CPU design, a sum-addressed decoder (SAD) or sum-addressed memory (SAM) decoder reduces latency in CPU cache access and address calculation by fusing the address generation sum operation with the decode operation in the cache SRAM.