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

Show arithmetic subtraction, Q. Show Arithmetic Subtraction? The subtra...

Q. Show Arithmetic Subtraction? The subtraction can be done easily using 2's complement by taking 2's complement of value which is to be subtracted (inclusive of sign bit) and

Explain a full subtractor using half subtractors, Draw the logic diagram of...

Draw the logic diagram of a full subtractor using half subtractors and explain its working with the help of a truth table Ans: Full Subtractor: It has to take care of repe

Explain about merge sort circuit, Q. Explain about Merge sort circuit? ...

Q. Explain about Merge sort circuit? First split the given sequence of n numbers in two parts every part comprising of n/2 numbers. Afterwards recursively divide the sequence i

Obtain 1''s and 2''s complement, Obtain 1's and 2's complement of 1010 usin...

Obtain 1's and 2's complement of 1010 using only four-digit representation. Solution: 1's complement: 1's complement of 1010 is  Please note that wherever you ha

Use of intrinsic functions in fortran, Q. Use of Intrinsic Functions in FOR...

Q. Use of Intrinsic Functions in FORTRAN? HPF initiates some new intrinsic functions also to those defined in F90. The two mainly often used in parallel programming are system

Example of perceptrons, Example of perceptrons: Here as an example fun...

Example of perceptrons: Here as an example function in which the AND boolean function outputs a 1 only but if both inputs are 1 and where the OR function only outputs a 1 then

Why is the wait-for-memory-function-completed, Why is the Wait-For-Memory-F...

Why is the Wait-For-Memory-Function-Completed step required when reading from or writing to the main memory? WMFC step is needed for the write control signal / read control si

External links to files, Somehow, the worksheet has external links to files...

Somehow, the worksheet has external links to files that are no longer around. How can we delete the links? Ans) This happens all of the time to MrExcel. I downloaded a little

Explain clearly the difference between j-cuts and l-cuts, Question: (a)...

Question: (a) Explain clearly the difference between J-cuts and L-Cuts. (b) What is the function of the rate stretch tool? (c) What's the difference between an Image Matt

Define superscalar processors, In scalar processors just one instruction is...

In scalar processors just one instruction is implemented per cycle which means just one instruction is issued for each cycle and only that one instruction is completed however the

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