3.8. Configuring little or big-endian operation

By default, the Integrator/CP operates as a little-endian system. To change to big-endian operation, write to the appropriate register in CP15 on the ARM core.

There is a delay between changing the endian configuration of the core and the system functioning in the new endian mode. Changing endianess should only be done at the start of a debugging session. The change must have taken effect before you can perform any subword accesses.


The supplied boot monitor, Ethernet controller, and LCD subsystem cannot operate in big-endian mode. For details on the interfaces, see Chapter 4 Peripherals and Interfaces.

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