Figure 5–5 Scatter-Gather Map Page Table Entry in Memory
LJ03956A.AI
63
32
MBZ
31
20
00
01
21
Page Address <32:13>
Valid
MBZ
The size of the scatter-gather map table is determined by the size of the PCI
target window as defined by the PCI mask register (see Table 5–8). Because the
scatter-gather map is located in system memory, bit sysBus<33> is always zero.
Bits sysBus<32:2> are obtained from the translated base register and the PCI
address.
System Address Mapping 5–19
Summary of Contents for Digital Alpha VME 4/224
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