RTEMS CPU Architecture Supplement
Members of the ARM family newer than Version 3 support a flat 32-bit address space with addresses ranging from 0x00000000 to 0xFFFFFFFF (4 gigabytes). Each address is represented by a 32-bit value and is byte addressable. The address may be used to reference a single byte, word (2-bytes), or long word (4 bytes). Memory accesses within this address space are performed in the endian mode that the processor is configured for. In general, ARM processors are used in little endian mode.
Some of the ARM family members such as the 920 and 720 include an MMU and thus support virtual memory and segmentation. RTEMS does not support virtual memory or segmentation on any of the ARM family members.
RTEMS CPU Architecture Supplement
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