May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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ADVANCED PROCESSORS—80286 TO PENTIUM 14-13
to initialize the system. The first instruction has an address in the upper part of the 1 MB
physical memory and that is usually ROM – thus, the processor continues to be in the real
mode, working within the physical memory of 1 MB.
We will now discuss the protected mode features of the processor, starting with
memory management. Before we do that, it is necessary to understand a very important
concept regarding memory.
14.6 | Virtual Memory
Virtual memory is a concept by which the processor (in effect, the user) is made to believe
that it has much more memory than is physically available. In effect, ...
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