Define interrupts in assembly language, Computer Engineering

Assignment Help:

Q. Define Interrupts in assembly language?

An interrupt causes interruption of an ongoing program. A number of the common interrupts are: printer, monitor, keyboard, an error condition and trap etc. 

8086 identifies two types of interrupts: Software interrupts and Hardware interrupts.

Hardware interrupts are produced when a peripheral Interrupt servicing program requests for some service. A software interrupt causes a call to OS. It generally is the input-output routine. 

Let's discuss software interrupts in more detail. A software interrupt is started using following statements:

INT number

In 8086 this interrupt instruction is processing employing the interrupt vector table (IVT). The IVT is situated in the first 1K bytes of memory and has a total of 256 entities every one of them of 4 bytes. An entry in interrupt vector table is recognised by the number provided in the interrupt instruction. Entry stores the address of operating system subroutine which is used to process interrupt. This address can be different for numerous machines. Figure belowdisplays the processing of an interrupt.

2478_Define Interrupts in assembly language.png

Figure: Processing of an Interrupt


Related Discussions:- Define interrupts in assembly language

Hypothetical reliable data transfer protocol, the c code for hypothetical r...

the c code for hypothetical reliable data transfer protocol

Various interconnection networks-fully connected, Various Interconnection N...

Various Interconnection Networks Fully connected: This is the most controlling interconnection topology.In this each node is directly linked to all other nodes. The shortcomi

When one speech sample appears in time multiplexed system, In a time multip...

In a time multiplexed space switching system, one speech sample appears every? One speech sample shows every 125 micro sec, in a time multiplexed space switching system.

Determine the list of micro-operations, Micro-Operations A micro-operat...

Micro-Operations A micro-operation is an basic operation which is performed on data stored in registers. We can classify micro-operations into four categories: 1. Register t

Describe the fundamental characteristics of antennas, Question 1: (a) ...

Question 1: (a) Describe the two fundamental characteristics of antennas explaining in detail how it affects the security of wireless networks. (b) What is a wireless cli

Provide constructors, For this assignment, fill out the following class:   ...

For this assignment, fill out the following class:   class person { private:   string firstName;   string lastName;   int weight; public:   . . . }; You should provide cons

Microprocesser, explain the bock and pin diagram of 8259 micropocesser

explain the bock and pin diagram of 8259 micropocesser

Which device changes from serial data to parallel data, Which device change...

Which device changes from serial data to parallel data ? Ans. Demultiplexer is the device that changes from serial data to parallel data. Demultiplexer takes data in from on

Cache misses - computer architecture, Cache Misses Compulsory misse...

Cache Misses Compulsory misses -  it is caused by initial access to a block that has never been in the cache (also called cold start misses Capacity miss - it is cause

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