Direct Memory Address. A mechanism for a device to move data directly to and from memory without CPU intervention.
A fast method of moving data between two processor subsystems without processor intervention.
Allows the I/O subsystem to access main memory for the transfer of data.
Direct Memory Access. A data transfer feature that bypasses a computer's CPU and allows direct communication between a computer and peripheral devices (like printers), and between one peripheral device and another.
Direct Memory Access. A tool for a microprocessor to delegate the control of the bus to special circuitry dedicated to the task.
Stands for "Direct Memory Access." DMA is a method of transferring data from ...
Direct Memory Access, IDE data storage device interface
Stands for direct access memory. DMA is a fast way of transferring data within a computer. Most devices require a dedicated DMA channel (so the number of DMA channels that are available may limit the number of peripherals that can be installed).
Direct Memory Access. The ability of a device to access system memory without having the CPU prefetch and send it the information.
irect emory ccess channels are similar to IRQs. DMA channels allow hardware devices (like sound cards or keyboards) to access the main memory without involving the CPU. This frees up CPU resources for other tasks. As with IRQs, it is vital that you do not double up devices on a single line. Plug and Play devices will take care of this for you. In Doze mode, only the CPU's speed is slowed.
direct memory access: a data transfer between memory and a peripheral that bypasses the CPU
Hardware devices attached to PCs (ranging from keyboards to sound cards) can be designed to send their instructions to and from main memory in one of two ways. The default is to ask the CPU to do the work. The more efficient way is to allocate one of the PC's DMA channels to send instructions directly to memory. This leaves the CPU free to do more important things. Like IRQs, DMA channels are limited in number, and you can't allocate one channel to more than one device (unless you want to grind your system to a halt). Most users come in contact with DMA when they install a sound card that--if they're lucky--picks the right channel during setup.
Direct Memory Access Controls fast data transfers to and from memory. Is an efficient method of moving large amounts of data using very little CPU resource.
Direct memory access. A facility that permits I/O transfers directly into or out of memory without passing through the processor's general registers; performed either independently of the processor or on a cycle-stealing basis.
Direct Memory Access. The fastest method of data transfer available for multitasking operating systems. Data is transferred from SCSI devices to system memory (RAM) via the SCSI card without using the system?s CPU.
Direct Memory Access. A data transfer feature that by-passes a computer's CPU and allows direct communication between the computer's memory and peripheral devices (such as printers).
direct memory access. Technology that enables certain devices, such as hard disks and CD or DVD drives, to transfer information directly to and from the computer's memory without using the computer's processor. DMA improves the performance of the device and frees the computer's processor so it can perform other tasks.
direct memory access. A process for data retrieval from a device such as a hard disk that writes information into main memory without involving the processor, thus freeing it up for other tasks.
A technique for high-speed data transfer between a device such as LAN network adapter card and the computer memory. DMA bypasses the Central Processing Unit of the computer, PC or workstation, allowing the device to transfer a block of information directly across the bus into system memory.
Direct Memory Access. A process for transferring data directly to and from main memory, without passing through the CPU. DMA improves speed and efficiency by allowing the system to continue CPU processing even while it is transferring data to/from the hard drive.
Stands for Direct Memory Access, in which a computer's subsystems can directly access memory without going through the system's main processor. This translates to a performance advantage for a computer that uses direct memory access.
direct memory access] A channel that allows certain types of data transfer between RAM and a device to bypass the microprocessor.
Direct Memory Access) - method by which data is read or written from shared memory by hardware proxy. This may be initiated by firmware, or performed automatically.
Direct Memory Access; mode used by peripherals to access to the system memory without using the CPU.
Direct memory access. A technology designed to speed up data exchange between computer peripherals and the RAM by avoiding CPU-imposed delays. See also ATA-2.
direct memory access. Transfer of data from a peripheral device, such as a hard disk drive, into memory without that data passing through the microprocessor. DMA transfers data into memory at high speeds with no processor overhead.
Direct access to the computer memory without using the processor. Used with disk drives, but to be cheap not implemented in CPCs. The Soundblaster card can also use a DMA channel, getting digital sound data "through" it.
Direct Marketing Association. Trade association with members including bulk mailers.
Stands for Direct Memory Access. A system by which peripherals can transfer data to and from system RAM without the intervention of the CPU.
Direct Memory Access. A system which allows an ISA device to move data directly to and from RAM.
A technique that some hardware devices use to transfer data to or from memory directly without requiring the involvement of the CPU.
Short for direct memory access, a technique for transferring data from main memory to a device without passing it through the CPU. Computers that have DMA channels can transfer data to and from devices much more quickly than computers without a DMA channel can. This is useful for making quick backups and for real-time applications.
Direct Marketing Association (see links page).
Direct Memory Access. DACK stands for Dma ACKnowledge and DRQ for Dma ReQuest. DMA provides direct access to system memory without adding to CPU overhead. The DACK and DRQ channels govern that communication.
Direct Memory Access. DMA is a method of transferring data from the disk into memory directly. In a CP/M system, the BDOS calls the BIOS entry point READ to read a sector from the disk into the currently selected DMA address. The DMA address must be the address of a 128-byte buffer in memory, either the default buffer at 0080H in page zero, or a user-assigned buffer in the TPA. Similarly, the BDOS calls the BIOS entry point WRITE to write the record at the current DMA address to the disk.
Acronym direct memory access. A high speed data storage mode of the IBM PC.
direct memory access. A method of transferring information directly from a mass-storage device such as a hard disk or from an adapter card in memory (or vice versa), without the information passing through the processor. because the processor is not involved in the transfer, direct memory access is usually very fast. DMA transfers are controlled by a special chip known as a DMA controller; 8237A is used in most PCs. Generally, most PCs use two of these chips to provide 8 DMA channels numbered 0 through 7; channel 4 is used to connect-or cascade-the two controllers together. Channels 0 thru- 3 are 8-bit channels, and can manage up to 64K of data in a single DMA operation; channels 5 thru 7 transfer data 16 bits at a time and can manage up to 128K of data. Channel 3 is reserved for the floppy disk drive controller, and channel 5 is used by the hard-disk controller in PS/2 systems.
Direct Memory Access. A circuit by which a high-speed transfer of information may be facilitated between a device and system memory. This transfer is managed by a specialized processor that relieves the burden of managing the transfer from the main CPU. See also PIO.
direct memory access; a process in which circuits other than the CPU can read from or write to memory without processor intervention. displacement-the amount by which a location differs from a reference point. When using data tables, the reference point is usually the base address.
Direct Memory Access Controllers allow your CPU to offload processing tasks to remote CPUS usually attached to the device. A Print Server with a fast DMA controller will server print jobs faster.
Direct Memory Access. Usually in the context of print servers or other network peripherals, this is a processing system attached to (or part of) the peripheral, allowing your server to "outsource" processing tasks to the remote system. This allows your whole network to spread the workload more easily and thus run more efficiently.
direct memory access. A method of moving data from a storage device directly to RAM, without using the CPU's resources.
Direct Memory Acess. High speed transfer between storage devices and memory.
(n.) Direct Memory Access; allows devices on a bus to access memory without requiring intervention by the CPU.
The ability to access memory without involving the microprocessor to improve performance is known as direct memory access (DMA). DMA channels enable devices to write and read straight from physical memory. This will reduce the workload of your CPU.
Direct Memory Access (DMA) is the ability to access memory without involving the microprocessor to improve performance. DMA channels enable devices to write and read straight from physical memory. This will reduce the workload of your CPU.
Direct Memory Access (DMA) is a capability provided by some computer bus architectures that allows data to be sent directly from an attached device such as a disk drive to the memory on the computer's motherboard. The microprocessor is freed from involvement with the data transfer, thus speeding up overall computer operation.
direct memory access. A procedure or method defined for gaining direct access to main storage and achieving data transfers without involving the processor.
Direct Memory Address. The line used by the expansion card to send data directly to memory without using the central processor (CPU).
This is a process whereby the I/O controller gains temporary control over the CPU's memory, while the program is running, to allow a single word or a group of words to be read or written. The I/O process obtains direct access to the memory.
direct memory access. A method of fast data transfer between the peripherals and the computer memory. The transfer does not involve the CPU.
Direct Memory Access. A mode of data transfer. DMA accelerates transfer rates because it does not access the computer's processor. Ultra DMA can support two devices and transfer data at rates up to either 33 MB/s or 66 MB/s depending on the type of Ultra DMA bus.
Direct Memory Access. Allows a 64KByte block of memory to be set aside for high-speed transfer of data to PC system memory. Boards which support single DMA access can store up to 64KBytes of data (32K samples) at speeds which can reach 250KBytes per second on ISA-bus PCs. Dual DMA access means that a second 64KByte block is set up while the first is being filled, allowing unlimited sample sizes.
(Direct Memory Access) A capability of some bus architectures that enables a bus controller to transfer data directly between a device (such as a disk drive) and a device with physically addressable memory, such as that on a computer's motherboard. The microprocessor is freed from involvement with the data transfer, thus speeding up overall computer operation. See also "bus master".
direct memory access. Direct memory access (DMA) describes the ability of a device to directly access (read from and write to) CPU memory, without CPU intervention.
Direct Memory Access (not via CPU)
An I/O technique that uses hardware logic for speeding data into and out of memory from external devices without the need for the processing units to generate addresses for every memory location.
Direct Memory Access is an electronic pathway or direct channel on which a device can bypass the CPU and send data directly to memory. A DMA channel is often one of the resources assigned when configuring an expansion card or device such as a sound card.
Direct Memory Access. Process allowing to exchange data between the central storage and an I/O device without passing through the CPU.
Direct Memory Access, if a device uses this then it doesn't require the CPU for accessing memory.
Direct Memory Access. Memory transfers to and from the graphics card (in this case) can occur without intervention from the CPU. This frees up the CPU to do other things while large amounts of texture or vertex data is moved to and from the graphics card and main memory.
Direct Memory Access. Direct Memory Access provides a way to transfer data between devices and memory at very high speeds.
Direct Memory Access. This term refers to the movement of data directly from memory to some other device, such as the disk drive, without first being loaded in the microprocessor.
Is Direct Memory Access. A DMA channel permits specified types of data transfers between RAM and a device to bypass a microprocessor.
direct memory access. A method of transferring data between a device and main memory without intervention by the CPU. DMA is handled by the device itself (bus-mastering or first-party DMA) or by a DMA controller chip in the system (slave or third-party DMA).
Direct Memory Access, doesn't slow down the main processor.
Direct memory access. A method to transfer data between peripheral devices and internal memory without intervention by the central processing unit (CPU).
irect emory ccess. The process of getting data from memory to put on the screen.
Direct Memory Access A form a data transfer directly between memory and a peripheral or between memory and memory, without normal program intervention.
It is possible for several hardware components to access memory directly without passing through the CPU first, which allows the CPU to be occupied with other tasks. Most motherboards have two DMA controllers present for use by ISA cards, but this is no longer necessary for PCI (AGP) devices. Terwijl ISA kaarten daar soms gebruik van maken, is het voor PCI en AGP kaarten niet langer nodig. De PCI (AGP) controller combineert zelfstandig toegangsaanvragen tot aaneengesloten reeksen adressen zodat een soort vervangend DMA systeem ontstaat. Hiervoor is geen programmering nodig: het is in de hardware van de controller 'ingebakken' en gedraagt zich transparant. Double Buffering While one buffer (filled with a picture) is presented on the screen, work on second buffer in the background can occur with another picture. During the vertical refresh period the buffers can be switched and the process repeats, making for very smooth on-screen updates.
Direct Memory Access. This occurs when ANTIC halts the 6502 and takes control of the system buses to fetch an instruction or data byte from memory.
A DMA (Direct Memory Access) is a channel for transferring data from main memory to a device without passing it through the CPU. Modem PCs have 8 DMA channels.
Direct memory access. A method by which data can be transferred to/from computer memory from/to a device or memory on the bus while the processor does something else. DMA is the fastest method of transferring data to/from computer memory.
Direct Memory Access. A form of data transfer employed when it is vital that information should be stored and retrieved quickly from disk. In this system, data is transferred automatically after the CPU has initiated the transfer without requiring super vision, freeing the CPU for other tasks.
direct memory access. Memory access that does not involve the microprocessor. DMA is frequently used for data transfer directly between memory and a peripheral device such as a disk drive. See also: hardware configuration
Abbrev, for Direct Market Access.