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・ Memory Junction Railway Museum
・ Memory Lane
・ Memory Lane (audio drama)
・ Memory Lane (Denton, Maryland)
・ Memory Lane (film)
・ Memory Lane (The Vampire Diaries)
・ Memory Lane Music Group
・ Memory Lane, Volume 1
・ Memory Lane, Volume 2
・ Memory leak
・ Memory Man
・ Memory Man (Baldacci novel)
・ Memory management
・ Memory management (operating systems)
・ Memory management controller
Memory management unit
・ Memory manager
・ Memory map
・ Memory mapping
・ Memory model
・ Memory model (programming)
・ Memory module
・ Memory Motel
・ Memory Mucherahowa
・ Memory Muscle
・ Memory of a Broken Dimension
・ Memory of a Free Festival
・ Memory of a Melody
・ Memory of Azov Egg
・ Memory of Justice


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Memory management unit : ウィキペディア英語版
Memory management unit

A memory management unit (MMU), sometimes called ''paged memory management unit'' (PMMU), is a computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses. It is usually implemented as part of the central processing unit (CPU), but it also can be in the form of a separate integrated circuit.
An MMU effectively performs virtual memory management, handling at the same time memory protection, cache control, bus arbitration and, in simpler computer architectures (especially 8-bit systems), bank switching.
== Overview ==

Modern MMUs typically divide the virtual address space (the range of addresses used by the processor) into pages, each having a size which is a power of 2, usually a few kilobytes, but they may be much larger. The bottom bits of the address (the offset within a page) are left unchanged. The upper address bits are the virtual page numbers.

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