Questions tagged [memory-hardware]

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Will this address result in a cache hit or miss for these cache mapping functions?

The Problem: A CPU produces the following sequence of read addresses in hex.    Suppose the cache is empty to begin with and assuming an LRU replacement, determine whether each address ...
6
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2answers
807 views

Why is word-addressable the exception, not the rule?

As stated on Wikipedia: Most modern computers are byte-addressable instead of word-addressable. Why is this case? Since the CPU processes words (of predominantly 64 bits or 8 bytes) now, wouldn't ...
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0answers
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Is this cache entry a hit or a miss? [duplicate]

The Problem: A CPU produces the following sequence of read addresses in hex. Suppose the cache is empty to begin with and assuming an LRU replacement, determine whether each address produces a hit or ...
32
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8answers
15k views

How does a computer determine the data type of a byte?

For example, if the computer has 10111100 stored on one particular byte of RAM, how does the computer know to interpret this byte as an integer, ASCII character, or ...
0
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2answers
275 views

Address bus and memory

If I have an address bus of 64K, i.e. it can access 64*1024 or 65536 locations, should I also have a memory chip with 65536 locations in it? What I'm trying to ask is that do all the 65536 locations ...
2
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6answers
2k views

How can a CPU access more memory locations than 2^wordsize?

I noticed that CPU's like the 8086 and especially the 8080 have the ability to access more memory than what one would normally assume. The 8080, for example, has an 8-bit word size but can use a 16-...
1
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2answers
342 views

How do Hard Drives Send and Recieve Data?

Ok. I know this is probably a commonly asked question. Before you refer me to a site or answer this yourself, I ask for you to please read this through. I have been into computers and electronics for ...