Asked by: Limei Bertonasked in category: General Last Updated: 21st June, 2020
What is tag directory in cache?
Consequently, what is a cache tag?
tag - A unique identifier for a group of data. Because different regions of memory may be mapped into a block, the tag is used to differentiate between them. valid bit - A bit of information that indicates whether the data in a block is valid (1) or not (0). 2 Locating data in the cache.
Also, how does a cache work? Cache memory is used to reduce the average time to access data from the Main memory. The cache is a smaller and faster memory which stores copies of the data from frequently used main memory locations. There are various different independent caches in a CPU, which store instructions and data.
Also question is, what is TAG field in cache memory?
A tag is said to be a matching tag if, after decoding a CPU address from a pending read or write, the tag field of the CPU address matches the tag associated with a cache block at the cache address given by (index, offset).
How many bits is a word?