• Virtual Memory: pages and page frames

    October 31, 2012

    Virtual memory decouples the virtual address space that the programmer and the processor sees from the physical address space of the actual RAM memory. For each process, a mapping is maintained between virtual addresses to physical addressed, and every memory access must pass through this map. The Memory Management Unit, MMU, is the physical contraption […]

  • Virtual memory

    October 29, 2012

    Memory is a precious resource that is managed by the operating system. There are several sorts of memory in the standard computing platform: disk, registers, and RAM memory. The discussion of virtual memory is about the management of RAM memory, which we will call physical memory, and sometimes we will talk about the disk, for […]

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