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Write Hit Policies:
o Update next level on every write
o Cache is always clean
o A lots of traffic to next level (mostly write)
o Write to cache and mark block dirty
o Update primary memory to eviction
o Less traffic to next ,but more complicated eviction and coherence
o Reads use directly and data array at the same time
o Write use directory first then data array
o How to we pipeline to permit one read or write per cycle?
What are the special features of Direct RDRAM? It is a two channel Rambus It has 18 data lines intended to transfer two bytes of data at a time There are no divide
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State the Relative addressing The location of data is specified relative to current value of the program counter. This is helpful for specifying location of data which is given
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Explain why pervasive computing can be termed as a “technology that disappears”
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