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

Address - operand data types, Q. Address - operand data types? A...

Q. Address - operand data types? Addresses : Operands residing in memory are specified by their memory address while operands residing in registers are specified by a re

How to change default drive in dos, Q. How to Change Default Drive in dos? ...

Q. How to Change Default Drive in dos? To modify a default drive type the new drive letter followed by colon (:) and then press Enter.  For example, if the default drive is A a

Amdahls law - calculate speed up performance, To calculate speed up perform...

To calculate speed up performance various laws have been developed. These laws are discussed here.  Amdahl's Law Remember, the speed up factor helps us in knowing the relat

Elements of composition - line, Line A Line is, on a simple level, a ma...

Line A Line is, on a simple level, a mark connecting 2 points. However, how lines are used in an image is extremely important. By varying the quality of line used in an image,

Explain the term overlays, Explain the term Overlays. An overlay is an ...

Explain the term Overlays. An overlay is an element of program that has the same load origin as several other part of the program. These are used for reduce the main memory req

Explain about synchronous dram, Q. Explain about Synchronous DRAM? One ...

Q. Explain about Synchronous DRAM? One of the most broadly used forms of DRAM is synchronous DRAM (SDRAM). Unlike the conventional DRAM that is asynchronous SDRAM exchanges dat

Differentiate between motion and shape tween, Question: 1. In Flash, w...

Question: 1. In Flash, what is the purpose of a motion guide layer? 2. Differentiate between Motion and Shape tween. 3. Give the steps to create a layer mask in flash.

Explain the features of major scheduling algorithms, Explain the Features o...

Explain the Features of Major scheduling algorithms. The Features of Major scheduling algorithms is given below: FCFS - i.e. First come first served scheduli

Biscuit factory circuit, Biscuits move on a conveyer through an oven where ...

Biscuits move on a conveyer through an oven where they are cooked.   Two sensors, H and C, measure the temperature of the oven, H = 1 if the oven is too hot and C = 1 if the ove

JAVA, HOW WAS JAVA INVENTED?

HOW WAS JAVA INVENTED?

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