memory access mode

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• Direct memory access — (DMA) is a feature of modern computers that allows certain hardware subsystems within the computer to access system memory independently of the central processing unit (CPU). Without DMA, the CPU using programmed input/output is typically fully… …   Wikipedia

• Memory protection — is a way to control memory access rights on a computer, and is a part of most modern operating systems. The main purpose of memory protection is to prevent a process from accessing memory that has not been allocated to it. This prevents a bug… …   Wikipedia

• Memory management unit — This 68451 MMU could be used with the Motorola 68010 A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware component responsible for handling accesses to memory requested by the CPU. Its… …   Wikipedia

• Memory management — is the act of managing computer memory. The essential requirement of memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and freeing it for reuse when no longer needed. This is critical to …   Wikipedia

• Memory segmentation — is the division of computer memory into segments or sections. Segments or sections are also used in object files of compiled programs when they are linked together into a program image, or the image is loaded into memory. In a computer system… …   Wikipedia

• Mode X — is an alternative video graphics display mode of the IBM VGA graphics hardware that was popularized by Michael Abrash, first published in July 1991 in Dr. Dobb s Journal, republished in chapters 47 49 of Abrash s Graphics Programming Black Book… …   Wikipedia

• Memory bandwidth — is the rate at which data can be read from or stored into a semiconductor memory by a processor. Memory bandwidth is usually expressed in units of bytes/second, though this can vary for systems with natural data sizes that are not a multiple of… …   Wikipedia

• Memory Type Range Registers — (MTRRs) are control registers that provide system software with control of how accesses to memory ranges by the CPU are cached. It uses a set of programmable model specific registers (MSRs) which are special registers provided by most modern CPUs …   Wikipedia

• Memory type range register — Memory type range registers (MTRRs) are a set of processor supplementary capabilities control registers that provide system software with control of how accesses to memory ranges by the CPU are cached. It uses a set of programmable model specific …   Wikipedia

• Mode effect — is a broad term referring to a phenomenon where a particular survey administration mode causes different data to be collected. For example, when asking a question using two different modes (e.g. paper and telephone), responses to one mode may be… …   Wikipedia

• Mode-setting — is setting up the screen resolution and depth mode for the graphics card. Modern mode setting software support multiple monitors ( multi head ) and hot plugging. Contents 1 Location 2 Implementations 2.1 FreeBSD …   Wikipedia