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

Determine the concepts of object oriented analysis, Determine the concepts ...

Determine the concepts of Object Oriented Analysis  In OOA the initial focus is on identifying objects from the application domain, after that fitting those procedures around

What is a structure, What is a structure? A structure is a collection o...

What is a structure? A structure is a collection of variables under a single name. These variables can be of different types, and each has a name which is used to select it fro

Arithmetic pipeline, Arithmetic Pipeline The complex arithmetic operati...

Arithmetic Pipeline The complex arithmetic operations like floating point and multiplication operations use a lot of the time of the ALU. These operations can also be pipelined

What is capacitor-based keyboards, Q. What is Capacitor-Based Keyboards? ...

Q. What is Capacitor-Based Keyboards? These keyboards are based on the idea of Capacitance. A simple capacitor comprises a pair of conductive plates having opposite charges and

Explain pipelining, Define pipelining Pipelining is an efficient way of...

Define pipelining Pipelining is an efficient way of organizing concurrent activity in a computer system. The processor implements the program by fetching and implementing instr

Network for digital methods in the arts and humanities, Network for Digital...

Network for Digital Methods in the Arts and Humanities: Europe has seen a signifi cant investment in the digitisation of its cultural heritage as part of the worldwide establi

Show the features of hyper-threading, Q. Show the Features of Hyper-threadi...

Q. Show the Features of Hyper-threading? The significant characteristics of hyper threading are: i) Improved response time and reaction, as well as increased number of users

What are the major functions of io system, What are the major functions of ...

What are the major functions of IO system?  i. Interface to the CPU and memory by the system bus.  ii. Interface to one or more IO devices by tailored data link.

Two ways of producing a list within a transaction, What are the two ways of...

What are the two ways of producing a list within a transaction? By submitting a separate report. By using leave to list-processing.

Differentiate between hardware and software, Differentiate between Hardware...

Differentiate between Hardware and Software Another classification is software vs. hardware. Hardware is the collection of physical components, like chips, wires, PCBs, connect

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