Why does dma have priority over the cpu, Computer Engineering

Assignment Help:

Why does DMA have priority over the CPU when both request a memory transfer?

The data transfer monitored by DMA controller which is called as DMA channel. The CPU is included only at the starting and end of the transfer, when the CPU wishes to read or write a block of data, it issues a command to DMA Channel by sending read/write operation, address of I/O, number of words to be read or written, as DMA have priority over the CPU when both request a memory transfer.

 


Related Discussions:- Why does dma have priority over the cpu

Define rules for evaluating the boolean expression, Define Rules For Evalua...

Define Rules For Evaluating the Boolean Expression? Generally, the following rules must always be followed when evaluating the Boolean expression: Primary, perform all in

Designing e-cash based system, How can it be achieved in designing e-cash b...

How can it be achieved in designing e-cash based system? E-cash is essentially an online solution.  The buyer must validate the coins by the issuer in order to get the purchase

What are the kernel threads, What are the Kernel threads Kernel threads...

What are the Kernel threads Kernel threads are supported directly by the operating system .Thread creation; scheduling and management are done by the operating system. Thus the

Difference between external and global variables, Global variables are acce...

Global variables are accessible only to the batch program while external variables can be referenced from any batch program residing in the similar system library.

Describe distributed object model, Question 1 Give a brief explanation on m...

Question 1 Give a brief explanation on message oriented middleware Question 2 Describe Distributed object model Question 3 Explain File systems in a distributed computing Env

What is home shopping, Home Shopping TV broadcast of goods for purchase...

Home Shopping TV broadcast of goods for purchase, sent directly to a viewer . This online shopping is available because of e-commerce.

What are the major systems of a telecommunication network, What are the maj...

What are the major systems of a telecommunication network? The main systems of any telecommunication network may contain the following main systems: a. Subscriber end instr

Explain three-way handshake mechanism, Explain Three-Way Handshake Mechanis...

Explain Three-Way Handshake Mechanism used by TCP to terminate a Session reliably. Just to guarantee that connection is sets up or terminated reliably, transfer control protoco

Explain the working of a 3-bit D/A converter, With the help of R-2R binary ...

With the help of R-2R binary network, explain the working of a 3-bit D/A converter and derive an expression for the output voltage. Ans: We see a 3-bit R-2R ladder D/A netwo

Control signal, justify whether the control signal passes through same bus ...

justify whether the control signal passes through same bus as data ,address and instruction or not?

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