Suppose a computer using Direct Mapped cache has 2^32 bytes of byte-addressable main memory and a cache of 1024 blocks, where each cache block contains 64 bytes. a. How many blocks of main memory are there? b. What is the format of a memory address as seen by the cache; that is, what are the sizes of the tag, block, and offset fields? c. To which cache block will the memory address 0x0000 54DC map?