6.18 System Interface Coherency

External Invalidate Request

An external invalidate request is used by an external agent to invalidate a cache block. If the desired block resides in the processor cache, it is marked Invalid.

Under normal circumstances, the secondary cache block former state should not be CleanExclusive or DirtyExclusive.

Copyright 1995, MIPS Technologies, Inc. -- 29 JAN 96

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