Dma controllers - computer architecture, Computer Engineering

DMA controllers in computer system:

  •   DMA Controller
  •   Part of the I/O device interface
  •   DMA Channels
  •   Performs functions that in general would be performed by the processor
  •   Bus signals that control transfer
  •   Provides memory address
  •   Keeps track of number of transfers
  •   Under control of the processor

INTERFACE CIRCUITS

o   Provides a storage buffer for at least one word of data.

o   Circuitry required connecting an I/O device to a computer bus

o   Contains address-decoding circuitry

o   Contains status flag that can be accessed by the processor.

o   Generates the appropriate timing signals required by the bus control scheme.

o   Performs format conversions

o   Ports

o  Parallel port

o  Serial port

Keyboard to processor connection

8_DMA controllers.png

 

Posted Date: 10/13/2012 7:27:06 AM | Location : United States







Related Discussions:- Dma controllers - computer architecture, Assignment Help, Ask Question on Dma controllers - computer architecture, Get Answer, Expert's Help, Dma controllers - computer architecture Discussions

Write discussion on Dma controllers - computer architecture
Your posts are moderated
Related Questions

As demonstrated in a simple manner in my Animated Tiles example, the purpose of this assignment is to use jQuery animations to develop a simple puzzle using DIV tags and styles. C

Fundamentals of IT 1. Explain the Impact of Information Technology on governments and educational organizations. 2. Explain application and system software. 3. Briefly ex

How many 32K X 1 RAM chips are needed to provide a memory capacity 256 kilobytes?

Categorized Optimization transformations The structure of program and the way in that data is defined and used in this provide vital clues for optimization. Optimization t

International Coal Coal-fired Power Generation Compared with other fossil fuels, burning coal produces relatively large amounts of atmospheric pollutants: carbon dioxide

Address phase: A PCI bus transaction starts having an address phase. The initiator,  after seeing that it has GNT# and the bus is inactive, drives the target address onto the

Can we specify file transfer in a Web page? Explain with the help of suitable example. Yes, file transfer can be given in a web page. The first field within a URL gives a proto

Q. Define pvm library functions? int info = pvm_freebuf( int bufid ) organizes of a message buffer. bufid message buffer identifier.  int pvm_getsbuf( void

how to calculate students''s averange test scores