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line offset

The lowest bits of an address, which say which byte inside a cache line is wanted.

The line (block) offset is the low log2(line size) bits of an address; it selects bytes within a line and plays no part in deciding hit or miss.

Examples

  • With 64-byte lines, the low 6 bits of an address are the line offset: 0x1234 has offset 0x34.

See also

cache index cache line
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