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Virosis

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• Virtual

  adjective 1. being such in power, force, or effect, though not actually or expressly such: a virtual dependence on charity. 2. Optics. noting an image formed by the apparent convergence of rays geometrically, but not actually, prolonged, as the image formed by a mirror (opposed to real). noting a focus of a system forming virtual […]

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• Virtual address

  1. A memory location accessed by an application program in a system with virtual memory such that intervening hardware and/or software maps the virtual address to real (physical) memory. During the course of execution of an application, the same virtual address may be mapped to many different physical addresses as data and programs are paged […]

• Virtual cache

  A cache which uses virtual address, i.e. it is between the processor and the memory management unit. A virtual cache cannot recognise external access to physical address, e.g. from DMA. The whole cache must be flushed when swapping between tasks which share same virtual address space. (1994-11-30)

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