The Cool Kids' CPU Cache Calculator

Recall, direct mapped means A = 1, fully associative means S = 1, and set associative means everything else. The notation we use is $(A, B, C).

A (associativity)

B (bytes per block or line)

C (capacity)

S (# sets) = C / (A * B)

M (address width in bits)

b (# block offset bits) = log(B)

s (# set index bits) = log(S)

t (# tag bits) = m - b - s

Address (hex)

Block Offset

Set Index

Tag

Set Index

Tag

Recreated Block Address

Recreated Memory Addresses (inclusive)

0x - 0x