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

Expalin massively parallel system and scalability, Massively Parallel Syste...

Massively Parallel System Indicates to a "parallel computer system" involving a huge number of processors. The numbers in a huge number of processors keeps increasing and curre

Computer representation for the negative integer, Everything stored on a co...

Everything stored on a computer can be represented as a string of bits. However, different types of data (for example, characters and numbers) may be represented by the same string

Hardware design of a typical system, Motorola 68HC11 series is a family of ...

Motorola 68HC11 series is a family of micro controllers , each device contains slightly different  functional blocks , however they are all based around the same microprocessor nam

What is domain analysis, What is domain analysis? Domain analysis is c...

What is domain analysis? Domain analysis is concerned with devising a precise, concise, understandable and correct model of the real world. Analysis starts with problem statem

What do you meant by a multimedia authoring system, Problem : a) What d...

Problem : a) What do you meant by a Multimedia Authoring System? b) Compare the verbose syntax to the dot syntax in Lingo. c) Explain each of the following terms: i) L

What is a flip-flop, What is a flip-flop? Ans. Flip-flop is particu...

What is a flip-flop? Ans. Flip-flop is particular bit memory cell. This stores individual bit information in its true and compliment form. It is the basic block of any sequ

Differences between a database index and a match code, What are the differe...

What are the differences between a Database index and a match code? Match code can have fields from several tables whereas an index can have fields from only one table.

What are single stage and multistage networks, What are single stage and mu...

What are single stage and multistage networks? Compare the strengths and weaknesses of each. OR List the major difference in single stage, two stages and three stage Netw

What are the different sections of a report, What are the different section...

What are the different sections of a report? A report is categorized into many sections: The Report header: In this you place a control which must appear only at the startin

Choosing a micro-controller, There are many different forms of micro-contro...

There are many different forms of micro-controller and a manufacturer, selecting the proper micro-controller for your application is one of the critical decisions which controls th

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