Dma controllers - computer architecture, Computer Engineering

Assignment Help:

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

 


Related Discussions:- Dma controllers - computer architecture

Explain asynchronous decade counter, Draw the circuit diagram of Asynchrono...

Draw the circuit diagram of Asynchronous decade counter and explain its working. Ans: To  design  a  circuit diagram of decade  asynchronous  counter  initially  we  dr

Determine about the raster-scan systems, Determine about the raster-scan sy...

Determine about the raster-scan systems Most of the present raster-scan systems contain a separate processor called as display processor. This processor performs graphics func

State the optimal route of node, State the optimal route of node Consid...

State the optimal route of node Consider the node i which has path length K+1, with the directly preceding node on the path being j. The distance to node i is w(j, i) plus the

Define mapping and list mapping procedure, Define Mapping and List  mappin...

Define Mapping and List  mapping procedure? The transformation of data from main memory to cache memory is known as an Mapping. Associative mapping Direct mapping

Risc approach - computer architecture, RISC Approach - computer architectur...

RISC Approach - computer architecture: The RISC processors only use easy instructions that can be executed within one clock cycle. therefore, the "MULT" command discussed abov

Expert systems, An expert systems is software that contains a knowledge ...

An expert systems is software that contains a knowledge base of facts and relationships and has the ability to make inferences based on that knowledge base. An experts sys

How does VB.NET achieve polymorphism, How does VB.NET/C# achieve polymorphi...

How does VB.NET/C# achieve polymorphism?  VB.Net / C# give polymorphism through the following mechanisms: 1. Inheritance - base class gives overridable methods which are re-

What is application analysis, What is application analysis? The purpose...

What is application analysis? The purpose of analysis is to understand the problem so that a correct design can be constructed. The application analysis focuses on major applic

Research methods, Building on their knowledge of research methods and their...

Building on their knowledge of research methods and their interest in a particular aspect of information technology this assessment enables students to put this knowledge into prac

Read after write and write after write - data hazards, RAW  and WAW - Data ...

RAW  and WAW - Data hazards: RAW (read after write) - j tries to read a source before i writes it, hence j wrongly gets the old value .This is the most usual type of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd