Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Datenbogen

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AT91SAM9N12-EK
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Caches and Write Buffer 
ARM DDI0198D
Copyright © 2001-2003 ARM Limited. All rights reserved.
4-3
The latter allows DCache coherency to be efficiently maintained when small code 
changes occur, for example for self-modifying code and changes to exception 
vectors.