9.5.1. Debug access to the caches, Step 1

This is done by reading the instruction cache and data cache TAG arrays using scan chain 15. The debugger must do this for each entry set within the cache. Figure 9.5 shows the format of the data returned.

Figure 9.5. TAG address format

The TAG address is formed from the TAG contents and the TAG index used to interrogate the TAG. This ensures that the data format returned is consistent regardless of cache size.

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