Explain dma and interrupt breakpoints, Computer Engineering

Assignment Help:

Q. Explain about DMA and Interrupt Breakpoints?

DMA interface transfers complete block of data one word at a time directly to or from memory without going through processor. When transfer is complete, DMA interface transmits an interrupt signal to processor. So in DMA processor involvement can be restricted at beginning and end of transfer that can be displayed as in figure above. However question is when should DMA take control of bus?

For this we would recall phenomenon of execution of an instruction by processor. Figure below displays five cycles for an instruction execution. Figure also displays five points where a DMA request can be responded to and a point where interrupt request can be responded to. Please note an interrupt request is acknowledged only at one point of an instruction cycle and that is at interrupt cycle.  

2496_Explain DMA and Interrupt Breakpoints.png

Figure: DMA and Interrupt Breakpoints


Related Discussions:- Explain dma and interrupt breakpoints

What is called static and dynamic branch prediction, What is called static ...

What is called static and dynamic branch prediction? The branch prediction decision is always the similar every time a given instruction is implemented. Any approach that has t

Knowledge representation in artificial intelligence , Knowledge Representat...

Knowledge Representation: To recap, now we have some characterizations of Artificial Intelligence, so  when an Artificial Intelligence problem arises, you will enable  to put i

Exdplain instruction buffers, Instruction buffers For taking the comple...

Instruction buffers For taking the complete advantage of pipelining pipelines must be filled continuously. So instruction fetch rate must be matched with pipeline consumption r

What is php, The PHP Hypertext Pre processor is a programming language that...

The PHP Hypertext Pre processor is a programming language that permits web developers to make dynamic content that interacts with databases. PHP is basically used for developing we

ERP, Benefits of implementing ERP

Benefits of implementing ERP

Explain an expression tree with a suitable example, What is an expression t...

What is an expression tree? How an expression is evaluated using an expression tree? Algebraic expressions is as given here a/b+(c-d)e That has an inherent tree-like structure

What are the differences between one hot and binary encoding, What are the ...

What are the differences between one hot and binary encoding? Common classifications used to explain the state encoding of an FSM is Binary or highly encoded and one hot. A bin

Differentiate between sequential and combinational circuits, Problem 1 ...

Problem 1 Prove that :- x(x + y) = x by using identities 2 Write a short note on Analog to Digital Converter (ADC) 3 Differentiate between sequential and combinational ci

Which scheduling in cpu is allocate for least cpu-burst time, The schedulin...

The scheduling in which CPU is allocated to the process with least CPU-burst time is called? Ans. Shortest job first Scheduling wherein CPU is allocated to the process with lea

Determine about the web authoring tools, Web authoring tools CGI was cons...

Web authoring tools CGI was considered excellent in the beginning since it was also open standard. The only drawback it suffered was that it was slow. Major software developers v

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