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Entretien pour Embedded Software Engineer



will cache affect memory I/O register?


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4 réponse(s)


cache affects memory I/O reg. When using peripherals you want memory accesses to happen in a certain order (mostly because of hardware constraints) so you want to avoid reordering. This is exactly what you would expect cache to do; temporarily store instructions and perform optimizations by grouping/reordering. You might get unexpected errors because of this.

Utilisateur anonyme le


Depends if the I/O register is memory mapped, processor type and a host of other things..

Anonymous le


this is related to cache coherency.

Utilisateur anonyme le


may be not..

Utilisateur anonyme le

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