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by narag
6345 days ago
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CPUs prior to 386 had direct access to physical memory. From 386 on, you could enable protected mode (default for Linux and Windows 95+) in which a pointer doesn't point to a physical location but to a virtual address that system translates to physical memory or disk-cached memory. That's the most basic fact. With much luck, that's the only thing you need to know to understand it :-) |
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