Set associative cache

Question

in this question how we can know set associativity.

Consider two cache organizations. The first one if 64 KB way associative with 64 byte block size. The second one is of the 64 KB direct mapped cache. The size of an address is 32 bits in both organizations. A 4 to 1 multiplexer has latency of 0.8 ns which k bit comparator has latency of k/5 nsec. The difference between the hit latencies of both cache organizations (i.e. associative hit latency – direct mapped hit latency) (in nsec) is ___________.

Answer 1

as per given 4:1 mux,if we consider it is 4 way associative then answer  is 1.2 ns.

Answer 2

There will be something n way  set associative,else we can't determine set offset.The qs seems wrong..

Comments

Since it has given 4:1 multiplexure means we are going to use it for selecting one line out of 4 line of a set in cache.

So its actually 4 way set associative.

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are u sure???then i am posting answer of it.

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Yes.