oozies blog: [0x03]. Notes on Assembly – Memory from a process point of view

http://blog.ooz.ie/2008/09/0x03-notes-on-assembly-memory-from.html

[0x03]. Notes on Assembly – Memory from a process’ point of view
Virtual Memory enables a user of a modern Operating System to utilize features, without which modern IT world has no chances. It wasn’t always like that. On the older OS’es programs could use most of the memory available to the contemporary Operating Systems (which was not too much in terms of today, quite a lot those days), but the price they paid for it was running one application at a time. The advent of Virtual Memory and Protected Mode changed a lot. As long as an OS allows it, a process can now think that it can use the entire main memory for itself. Multiple processes are tricked into this belief what makes backwards compatibility possible and relatively painless.

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