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 are the defining traits of an object-oriented language, The defining t...

The defining traits of an object-oriented language are: * Encapsulation * Inheritance * Polymorphism

How many octets does smallest possible ipv6 datagram contain, How many Octe...

How many Octets does the smallest possible IPV6 datagram contain? The maximum size of an Ipv6 datagram is 65575 bytes, with the 0 bytes Ipv6 header. Ipv6 also describe a minim

Designing the instruction format, Q. Designing the instruction format is a ...

Q. Designing the instruction format is a complex art? Instruction Length Significance: It's the fundamental issue of the format design. It concludes the richness and flex

Extra variables by which customers call for work to work out, What are the ...

What are the extra variables by which customers call for to work out? All customers who do not purchase Internet connectivity through a Service Provider do call for to work out

Iterative deepening search, Iterative Deepening Search: So, breadth fi...

Iterative Deepening Search: So, breadth first search is always guaranteed to find a solution (if one exists), actually it eats all the memory. For the depth first search, ther

Operation research, how to implement a modified distribution method using c...

how to implement a modified distribution method using c/c++

How to add a wait state when creating a verification point, 1. Start to mak...

1. Start to make the verification point. 2. In the confirmation Point Name dialog box, select Apply wait state to confirmation point. 3. Type values for the following option

What is selective complement - logic micro operations, SELECTIVE COMPLEMEN...

SELECTIVE COMPLEMENT The selective-complement process complements bits in register A where there are corresponding 1's inside register B. It does not affect bit positions which

Differentiate between absolute and relative poverty, Question 1: Using ...

Question 1: Using appropriate diagrams, describe the optimal provision of a private good and a public good. Question 2: Using appropriate diagram, show how there is an

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