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

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

Example on sorting using combinational circuit, Q. Example on Sorting using...

Q. Example on Sorting using Combinational Circuit? Example: Think about a unsorted list having element values like given below {3,9,8,5,10,12,14,20,90,95,60,40,23,35,18,0}

Determine the o/p for JK flip flop with J=1 & K=0, For JK flip flop with J=...

For JK flip flop with J=1, K=0, the output after clock pulse will be ? Ans. The output will be 1 after clock pulse.

Determine about the security- accidental damage, Determine about the securi...

Determine about the security- accidental damage accidental damage is best guarded against by keeping back up files or use Grandfather-Father-Son (GFS) method; also use of passw

Hard-disk acquisition, Problem (a) Forensic methodology consists of t...

Problem (a) Forensic methodology consists of three phases. Briefly explian these three phases. (b) Sometimes it's best not to perform hard-disk acquisition. Provide two

Nand gate, The NAND gate. The NAND gate is equivalent to an AND gate fo...

The NAND gate. The NAND gate is equivalent to an AND gate followed by a NOT gate so that the output is 0 when all of the inputs are high, otherwise the output is 1. There may

Program in c, addition c program for token separation

addition c program for token separation

Differences between datagrid and datalist, Differences between Datagrid, Da...

Differences between Datagrid, Datalist and Repeater?   1. Datagrid has paging while Datalist doesnt. 2. Datalist has a property known as repeat. Direction = vertical/horizon

Illustrate what is a ion pair energy, Q. Illustrate what is a ion pair ener...

Q. Illustrate what is a ion pair energy? Answer:- Ion energy contains electric charges called protons (+) and neutrons (0) and electrons (-) charges. It's present in an at

.rapid technology, Choose one area of rapid technological change in IT or C...

Choose one area of rapid technological change in IT or Computer Science and research and report on recent developments and the outlook for the future in the area that you have chos

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