Portions of a cache are flushed in stages. An exemplary flushing of the
present invention comprises flushing a first portion, performing
operations other than a flush, and then flushing a second portion of the
cache. The first portion may be disabled after it is flushed. The cache
may be functionally divided into portions prior to a flush, or the
portions may be determined in part by an abort signal. The operations may
access either the cache or the memory. The operations may involve direct
memory access or interrupt servicing.