Explain processing of an interrupt, Computer Engineering

Assignment Help:

Q. Explain Processing of an Interrupt?

The interrupt is processed as:

Step 1:Number field in INT instruction is multiplied by 4 to get its entry in interrupt vector table. For instance the IVT entry for instruction INT 10h willbe found at IVT at an address 40h. In the same way entry of INT 3h will be placed at 0Ch.

Step 2: CPU locates interrupt servicing routine (ISR) whose address is storedat IVT entry of interrupt. For instance in the figure above ISR of INT10h is stored at location at a segment address F000h and an offset F065h.

Step 3: CPU loads IP CS register and IP register with this new address in IVT and transfers control to that address same as a far CALL.

Step 4: IRET (interrupt return) causes program to recommence execution at the subsequent instruction in calling program.


Related Discussions:- Explain processing of an interrupt

Diffrentiate between non-relocatable & relocatable programs, How non-reloca...

How non-relocatable programs are different from relocatable programs? Non relocatable program: It is one that cannot be made to execute in any type of area of storage other t

Decimal equivalent of hex number 1A53, What is the decimal equivalent of he...

What is the decimal equivalent of hex number 1A53 ? Ans. 6739 is the decimal equivalent of Hex Number 1A53. From Hex Number to Decimal Number conversion is shown below: 1

Main features of TCP, The main features of TCP are: Reliability: TCP...

The main features of TCP are: Reliability: TCP makes sure that any data sent by a sender arrives at destination as it was sent. There can't be any data loss or change in the

Multithreaded architecture, Q. Multithreaded Architecture? It is clear ...

Q. Multithreaded Architecture? It is clear at the moment if we provide a lot of contexts to multiple threads then processors with numerous contexts are known as multithreaded s

Explain about interrupt cycle, Q. Explain about Interrupt Cycle? On com...

Q. Explain about Interrupt Cycle? On completion of execute cycle the current instruction execution gets completed. At this point a test is made to conclude whether any enabled

Difference between shadow and override in programming, Overriding tell us o...

Overriding tell us only the methods, but shadowing tells us the entire element.

Project, write a programme to simulate a train station to automate

write a programme to simulate a train station to automate

Explain loop level of parallel processing, Loop Level At this stage, fo...

Loop Level At this stage, following loop iterations are candidates for parallel execution. Though, data dependencies among subsequent iterations can restrict parallel execution

Subtraction using 2's complement method of binary number, Subtraction of 00...

Subtraction of 0011.1001 - 0001.1110 using 2's complement method Ans. Firstly 1's complement of 0001.1110 is 1110.0001 and 2's complement is 1110.0010. If a last carry

Subsequent statements set every element of matrix, Q. Subsequent statements...

Q. Subsequent statements set every element of matrix? Let a= [2,4,6,8,10], b=[1,3,5,7,9], c=[0,0,0,0,0] Consider the subsequent program section FORALL (i = 2:4)   a(i)

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