4.2 Address Spaces
64-bit Mode Address Translation
Figure 4-3 shows the virtual-to-physical-address translation of a 64-bit mode address. This figure illustrates the two extremes in the range of possible page sizes: a 4-Kbyte page (12 bits) and a 16-Mbyte page (24 bits).
- The top portion of Figure 4-3 shows a virtual address with a
12-bit, or 4-Kbyte, page size, labelled Offset. The remaining 28 bits of the address represent the VPN, and index the 256M-entry page table.
- The bottom portion of Figure 4-3 shows a virtual address with a 24-bit, or 16-Mbyte, page size, labelled Offset. The remaining 16 bits of the address represent the VPN, and index the 64K-entry page table.
Figure 4-3 64-bit Mode Virtual Address Translation
Copyright 1996, MIPS Technologies, Inc. -- 21 MAR 96
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