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In computing, busdma, bus_dma and bus_space is a set of application programming interfaces designed to help make device drivers less dependent on platform-specific code, thereby allowing the host operating system to be more easily ported to new computer hardware.
Dynamic Microprocessor Associates, Inc. (DMA), was a software company in the United States. Though best known for its remote administration product pcAnywhere , DMA also developed and marketed the relational database management system Formula IV, the BBS software Chairman [ 1 ] and the modem control software ASCOM. [ 2 ]
Exar 16550. The 16550 UART (universal asynchronous receiver-transmitter) is an integrated circuit designed for implementing the interface for serial communications.The corrected -A version was released in 1987 by National Semiconductor. [1]
In computing, Virtual DMA Services (VDS) refer to an application programming interface that allow DOS and Win16 applications and device drivers to perform DMA operations while running under protected or virtual 8086 mode.
Each DMA channel has a 16-bit address register and a 16-bit count register associated with it. To initiate a data transfer the device driver sets up the DMA channel's address and count registers together with the direction of the data transfer, read or write. It then instructs the DMA hardware to begin the transfer.
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I/O Acceleration Technology (I/OAT) is a DMA engine (an embedded DMA controller) by Intel bundled with high-end server motherboards, that offloads memory copies from the main processor by performing direct memory accesses (DMA). It is typically used for accelerating network traffic, but supports any kind of copy.
Microchip made efforts to adapt advanced peripherals and power management that used very little power and can operate independently without having the CPU core powered up (sleepwalking). They also provided for DMA between external interfaces and memories increasing data throughput with minimal processor intervention.