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Yeah, me i say, with DIRECT access, only addresses are known and kept, so as you try to read or write, the data contained in those memory addresses the computer is iterating through is never looked at/opened but only the data kept in the address you are trying to read or write to is the one opened. This differs from RANDOM, as random has a mechanism of ...


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In most modern hardware, main memory is more like a peripheral. What I'm going to describe in what follows is Intel-esque PC-ish hardware, but it's very similar on other systems. During initial booting, when the power is first applied, the CPU only has cache, firmware, and some memory-mapped I/O. One of the first jobs is to initialise an external piece of ...


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Currently, cache sizes are usually so big that more than one transfer from RAM to cache is needed to completely load a cache line. But reading from RAM takes time for the RAM to receive the address of the data to be read, and then time for the actual transfer, and asking RAM to perform say four transfers in a row is much faster than accessing four random ...


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