'Dma transfer' diaporamas de présentation

Chapter 13: Direct Memory Access and DMA-Controlled I/O

Chapter 13: Direct Memory Access and DMA-Controlled I/O. Introduction. The DMA I/O technique provides d irect a ccess to the m emory while the microprocessor is temporarily disabled.

1.71k views • 143 slides

Chapter 13: Direct Memory Access and DMA-Controlled I/O

Chapter 13: Direct Memory Access and DMA-Controlled I/O. Introduction. The DMA I/O technique provides d irect a ccess to the m emory while the microprocessor is temporarily disabled.

1.71k views • 143 slides

ORG ; FIFTEEN

Dec Hex Bin. 15 F 00001111. ORG ; FIFTEEN. DIRECT MEMORY ACCESS AND DMA CHANNELS IN x86 PC. OBJECTIVES this chapter enables the student to:. Describe the concept of DMA, direct memory accessing. List the pins of the 8237A DMA chip and describe their functions.

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Chapter 7

Chapter 7. Input/Output (Continued). DMA Function. DMA controller(s) takes over Bus supervision from CPU for I/O Additional Module(s) attached to bus to control DMA operation. Typical DMA Module Organization. DMA Operation. CPU provides direction to DMA controller(s) Read/Write

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CS5412/ Lecture 15 Hardware Accelerators

CS5412/ Lecture 15 Hardware Accelerators. Ken Birman CS5412 Spring 2019. In The early days, divide and Conquer Sufficed. People broke web page computations into a first-tier, and then a bank of specialized ?-services optimized for highly parallel computation.

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The Memory Hierarchy

The Memory Hierarchy. Topics Storage technologies and trends Locality of reference Caching in the memory hierarchy. class10.ppt. Random-Access Memory (RAM). Key features RAM is packaged as a chip. Basic storage unit is a cell (one bit per cell). Multiple RAM chips form a memory.

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DMA

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DMA and DSP

DMA and DSP. Michael Urman University of Illinois at Urbana-Champaign. Introduction. Hardware to help the CPU The CPU is in control But other hardware can do the repetitive work. Agenda. Direct Memory Access (DMA) Digital Signal Processing (DSP). Overview of DMA.

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Device Controller

Device Controller. I/O units typically consist of A mechanical component: the device itself An electronic component: the device controller or adapter. Interface between controller and device is a very low level interface. Example:

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Direct memory access Direct memory access (DMA) is a process in which an external device takes over the control of syst

Direct memory access Direct memory access (DMA) is a process in which an external device takes over the control of system bus from the CPU. DMA is for high-speed data transfer from/to mass storage peripherals, e.g. harddisk drive, magnetic tape, CD-ROM, and sometimes video controllers.

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GTS, Optical Link and TRACE Front End Electronics Andrea Triossi INFN - LNL

GTS, Optical Link and TRACE Front End Electronics Andrea Triossi INFN - LNL. PROMETEO workshop. November 17-18 2011, Valencia. Outlines. NEDA . Global Trigger and Synchronization Firmware Optical Gigabit Link (LINCO) Expected Activities. TRACE. FEE options Reduced output

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Unit - 2

Unit - 2. DMA 8237A-5. Basic DMA operation:. The direct memory access (DMA) I/O technique provides direct access to the memory while the microprocessor is temporarily disabled. A DMA controller temporarily borrows the address bus, data

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Unit-4: I/O Techniques

Unit-4: I/O Techniques. Prof.M.Rajasekhara Babu School of Computing Science and Engineering mrajasekharababu@vit.ac.in. OutLine. Recap Session Objectives & Teaching Learning Material Session Plan Bus Arbitration Memory Maped I/O Isolated I/O Polling Assignment References. Re-Cap.

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Direct Memory Access (DMA)

A Presentation On. Direct Memory Access (DMA). Department of Computer Engineering, M.S.P.V.L. Polytechnic College, Pavoorchatram. Introduction. The transfer of data between the memory and an external device without involving the micro processor improves the speed of transfer.

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Chapter 13

Chapter 13. Direct Memory Access (DMA). Chapter Objectives. Review and compare main types of I/O Introduce Direct Memory Access (DMA) I/O Explain basic DMA operation: HOLD, HLDA Introduce the 8237A programmable DMA controller (DMAC)

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Direct Memory Access (DMA)

Direct Memory Access (DMA). Topics to be discussed Basic DMA Concept DMA pins and timing DMA on the 8086 Microprocessor 8237 pins A 8237 DMA application 8237 registers 8237 Software commands. Basic DMA concept

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Direct Memory Access (DMA)

Direct Memory Access (DMA). Topics to be discussed Basic DMA Concept DMA pins and timing DMA on the 8086 Microprocessor 8237 pins A 8237 DMA application 8237 registers 8237 Software commands. Basic DMA concept

1.43k views • 13 slides

DMA

DMA. allows certain hardware subsystems within the computer to access system mem. independently of the CPU. Many hardware systems use DMA including disk drive controllers, graphics cards , network cards , and sound cards .

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