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Address Mapping (cont)

Page table entries typically do not store physical address
  • to save space, just store frame number F
  • compute physical address via (P * F + Offset)
If P == 2n, then address mapping becomes

[Diagram:Pics/opsys/addr-mapping.png]

Note: This diagram assumes 32 bit addresses. With 64 bit addresses Page# = bits[n..64] and Frame# = bits[n..64]