For a match, a cache hit occurs as the required word is found in the cache. Then, the tag bits in the address is compared with the tag of the block. To map the memory address to cache: The BLOCK field of the address is used to access the cache’s BLOCK. The address here is divided into 3 fields : Tag, Block & Word. Direct Mapping: Each block from main memory has only one possible place in the cache organization in this technique.įor example : every block i of the main memory can be mapped to block j of the cache using the formula : j = i modulo m The mapping techniques can be classified as :ġ. The process /technique of bringing data of main memory blocks into the cache block is known as cache mapping. Prerequisite – Cache mapping Types – Direct-mapping, Associative Mapping & Set-Associative Mapping If data has been found in the cache, it is a cache hit else a cache miss. Cache hit ratio = No of cache hits/ (No of cache hits + No. Computer Organization and Architecture | Pipelining | Set 2 (Dependencies and Data Hazard)Ĭache hit ratio: It measures how effectively the cache fulfills the request for getting content.Memory Segmentation in 8086 Microprocessor.
DIRECT MAPPED CACHE TAG INDEX OFFSET SOFTWARE
Difference between Hardware and Software.Random Access Memory (RAM) and Read Only Memory (ROM).Program for Binary To Decimal Conversion.Program for Decimal to Binary Conversion.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.
GATE CS Original Papers and Official Keys.
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