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

Design requirements of combinational logic, What are the requirements to de...

What are the requirements to design Combinational Logic ? Ans . Design Requirements of Combinational Logic:- (i) By the specifications of circuit, we find out the

What is the window of the working set of a process, What is the window of t...

What is the window of the working set of a process? The window of the working set of a method is the total number in which the method had referred the set of pages in the work

Distributed workstation cluster, A distributed workstation cluster must be ...

A distributed workstation cluster must be viewed like single computing resource and not as a group of particular workstations'.  Details of cluster were: 150MHz R4400 workstatio

Features of an expert system, The heart of an experts systems is the ...

The heart of an experts systems is the powerful corups of knowledge that accumulates during system building. The knowledge is explicit and organized to simplify decisio

Explain the differences between macros and subroutines, Explain the differe...

Explain the differences between macros and subroutines. Macros Vs Subroutines (i) Macros are pre-processor directives which are processed before the source program is pass

Illustrate about fourth generation computers, Q. Illustrate about fourth ge...

Q. Illustrate about fourth generation computers? One of the main milestones in IC technology is Very large scale integration (VLSI) where thousands of transistors can be integr

Game playing techniques - artificial intelligence, Game Playing techniques ...

Game Playing techniques - artificial intelligence: Now we have dispensed with the essential background material for Artificial Intelligence problem solving techniques, and we m

Advantages on electronic payment system, Advantages on electronic payment s...

Advantages on electronic payment system It gives good security schemes.  Four necessary security requirements for safe e-payments are Authentication, Encryption, Integrity,

Define user mode and kernel mode, Define user mode and Kernel mode Kern...

Define user mode and Kernel mode Kernel is a private mode in that no limitation is imposed on the kernel of system. Kernel may be use all the information of the processor, oper

Finite state automaton, Once a finite state automaton (FSA) is designed, it...

Once a finite state automaton (FSA) is designed, its transition diagram can be translated in a straightforward manner into program code. However, this translation process is consid

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