Direct Memory Addressing

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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

• Direct Memory Access — Der Begriff Speicherdirektzugriff oder englisch Direct Memory Access (DMA) bezeichnet in der Computertechnik eine Zugriffsart, die über ein Bussystem direkt auf den Speicher zugreift. Diese Technik erlaubt angeschlossenen Peripheriegeräten, wie… …   Deutsch Wikipedia

• Addressing mode — Addressing modes are an aspect of the instruction set architecture in most central processing unit (CPU) designs. The various addressing modes that are defined in a given instruction set architecture define how machine language instructions in… …   Wikipedia

• Memory-mapped I/O — For more generic meanings of input/output port, see Computer port (hardware). MMIO redirects here. For the airport serving Saltillo, Mexico, assigned the ICAO code MMIO, see Plan de Guadalupe International Airport. Memory mapped I/O (MMIO) and… …   Wikipedia

• Memory address — A digital computer s memory, more specifically main memory, consists of many memory locations, each having a memory address, a number, analogous to a street address, at which computer programs store (except when the address is in mask ROM) and… …   Wikipedia

• Memory-mapped file — A memory mapped file is a segment of virtual memory which has been assigned a direct byte for byte correlation with some portion of a file or file like resource. This resource is typically a file that is physically present on disk, but can also… …   Wikipedia

• Direct access storage device — In mainframe computers and some minicomputers, a direct access storage device, or DASD (  /ˈdæ …   Wikipedia

• addressing — n. method of accessing network resources (Computers) ad·dress || É™ dres n. location; description of a location; (Computers) number specifying a location in a computers s memory or on a disk; (Computers) unique name or code identifying each… …   English contemporary dictionary

• Flat memory model — In computer systems design, a flat memory model refers to a linear addressing paradigm, such that the CPU can directly (and sequentially) address all of the available memory locations, without having to resort to any sort of bank switching or… …   Wikipedia

• Virtual memory — This article is about the computational technique. For the TBN game show, see Virtual Memory (game show). Virtual memory combines active RAM and inactive memory in disk form into a large range of contiguous addresses. In computing, virtual memory …   Wikipedia

• Conventional memory — Memory areas of the IBM PC family. In DOS memory management, conventional memory, also called base memory, is the first 640 kilobytes (640 × 1024 bytes) of the memory on IBM PC or compatible systems. It is the read write memory usable by the… …   Wikipedia