Motorola MVME2300 Series - Manual (Page 255)

Endian Issues
http://www.motorola.com/computer/literature 5-11
5
Endian Issues
The MVME2300 series supports both little-endian and big-endian
software. Because the PowerPC processor is inherently big-endian, PCI is
inherently little-endian, and the VMEbus is big-endian, there is potential
for confusion. The figures below illustrate how the MVME2300 series
boards handle the endian issue in big-endian and little-endian modes.
Figure 5-3. Big-Endian Mode
Big-Endian PROGRAM
1898 9609
Raven
Universe
Falcons
DRAM
Big-Endian
Little-Endian
Big-Endian
Little-Endian
PCI Local Bus
VMEbus
N-way Byte Swap
N-way Byte Swap
60X System Bus