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

Describe miscellaneous and privileged instructions, Q. Describe Miscellaneo...

Q. Describe Miscellaneous and Privileged Instructions? These instructions don't fit in any of above categories. I/O instructions: start I/O, stop I/O, and test I/O. Characteris

How can i handle floating-point exceptions gracefully, 'On many systems, yo...

'On many systems, you can describe a function matherr which will be known as when there are certain floating-point errors, like errors in the math routines in .

Ground substitution, Ground substitution: Here the act of performing a...

Ground substitution: Here the act of performing an instantiation is a function like there is only one possible outcome means we can write it as a function. And the notation Su

Design a nand-to-and gate network, Q Use as few gates as possible, design a...

Q Use as few gates as possible, design a NAND-to-AND gate network that realize the following Boolean algebra expression. ABCD + A'BC'D + A'BC'D' + A'BCD + (A'B'C'D' + A'BCD')

Diffeomorphism, A different smooth structure on R: Show that (U, f) given b...

A different smooth structure on R: Show that (U, f) given by U = R, f : x -> x3, is a local chart of the topological manifold M = R which is not a member of the standard smoo

How can we draw a circle with gimp, Ans) The simplest way is to make a new ...

Ans) The simplest way is to make a new selection with Ellipse Select tool and stroke it (Edit -> Stroke Selection...). We welcome patches that add tools to draw geometric primitive

Define object oriented modelling, Object oriented modelling Object ori...

Object oriented modelling Object oriented modelling is entirely a new way of thinking about queries. This methodology is all about visualizing the things by using models organ

Idiomatic translations - artificial intelligence, For this exercise you hav...

For this exercise you have to gather and report some linguistic data. Make sure your data are accurate by checking them with a native speaker if you yourself are not a native speak

Explain lan topologies, Explain LAN Topologies and its basic topologies. ...

Explain LAN Topologies and its basic topologies. LAN Topologies: Network topology is a physical schematic that shows interconnection of the various users. There are four fund

What is the basic approach of page replacement, What is the basic approach ...

What is the basic approach of page replacement?  If no frame is free is available, find one that is not currently being used and free it. A frame can be freed by writing its co

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