When Ppc Devices Are Little Endian; Figure 2-7. Big-To-Little-Endian Data Swap - Motorola MVME5100 Programmer's Reference Manual

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D0
D7
D0

Figure 2-7. Big-to-Little-Endian Data Swap

When PPC Devices are Little Endian

When all PPC devices are operating in little-endian mode, the originating
address is modified to remove the exclusive-ORing applied by PPC60x
processors. Note that no data swapping is performed.
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D1 D2 D3 D4
D6 D5 D4 D3
D1 D2 D3 D4
D7 D6 D5
D3 D2 D1
Functional Description
D5 D6 D7
PPC Bus
D2 D1 D0
64-bit PCI
D5 D6 D7 PPC Bus
D4 32-bit PCI
D0
1916 9610
2
2-39