Question

14. For a direct-mapped cache with a 32-bit address and 32-bit words, the following address bits are used to access the cache.

Tag	Index	Offset
31-16	15-5	4-0

1. 1. What is the cache block size (in words)?
2. 2. How many blocks does the cache have?

Answer 1

Q-> 14. For a direct-mapped cache with a 32-bit address and 32-bit words, the following address bits are used to access the cache.

Tag	Index	Offset
31-16	15-5	4-0

1) What is the cache block size (in words)?

as. offset field is from 0 to 4, ie 4 bits

=> block size of cache = 2⁴ = 16 words

.

2) How many blocks does the cache have?

as index field is from 5 to 15,

=> no of bits for index = 10

=> no of blocks = 2¹⁰ = 1024 blocks