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Instruction Memory Barrier

9.2.4 Invalidate the ICache

The ICache must be invalidated to remove any stale copies of instructions that are no

longer valid. If the ICache is not being used, or the modified regions are not in cachable

areas of memory, then this might not be required.

9.2.5 Flush the prefetch buffer

To ensure consistency, the prefetch buffer should be flushed before self-modifying code

is executed. See Self modifying code on page 7-2.

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ARM ARM926EJ-S Specifications

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