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

Quick sort , Write Quick sort non recursive program

Write Quick sort non recursive program

How many types of memory in computer architecture, Computer have many type ...

Computer have many type of memory like primary memory , Auxiliary memory ,  Cache memory , buffer memory ,virtual memory , The work of all memory heterogeneously primary memory

When should the method invokelater() be used, This method is used to make s...

This method is used to make sure that Swing components are updated by the event-dispatching thread.

Coupling and cohesion, Coupling and cohesion can be shown using a:- Dep...

Coupling and cohesion can be shown using a:- Dependence matrix

Flynns categorization, Flynn's Categorization Flynn's Categorization is...

Flynn's Categorization Flynn's Categorization is based on multiplicity of data streams and instruction streams observed by CPU at the time of program execution. Let I s and D

Grounding a variable - first-order logic, Grounding a variable - first-orde...

Grounding a variable - first-order logic: The perform of making ourselves clear about a variable by introducing an exists or a forall sign is called quantifying the variable.

Canonical genetic algorithm - artificial intelligence, Canonical Genetic Al...

Canonical Genetic Algorithm: In such a scenario with all search techniques there one of the first questions to ask along with GAs is how to define a search space that is actua

What is disadvantage of distributed systems, What is disadvantage of Dis...

What is disadvantage of Distributed systems? Ans. Reliability is disadvantage of Distributed system.

Explian two limitations of dead-box analysis, (a) Explian two limitations o...

(a) Explian two limitations of dead-box analysis. (b) Describe why memory analysis is difficult. (c) With reference to the "Shadow Walker" rootkit, explain what is meant by

Explain the instruction decode, Q. Explain the Instruction Decode? Ins...

Q. Explain the Instruction Decode? Instruction Decode: This phase is performed under control of Control Unit of computer. The Control Unit determines the operation which is t

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