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

Public key infrastructure solutions, Public Key Infrastructure solutions ...

Public Key Infrastructure solutions The use of public-key based security systems requires great attention and due care in design and management of security features. The secur

State about the behavioral modeling, State about the Behavioral modeling ...

State about the Behavioral modeling Behavioral means how hardware behaves determine exact way it works we write using HDL syntax. For complex projects it's better mixed approac

Why we need web browser, Q. why we need Web Browser? A Web browser is s...

Q. why we need Web Browser? A Web browser is software program which allows you to easily display Web pages and navigate the Web. The first graphical browser, Mosaic, was develo

Name some popular internet browsers, Name some Popular Internet Browsers ...

Name some Popular Internet Browsers There are many internet browers are available on internet. Some Popular Internet Browsers are: Internet Explorer, Netscape Navigato

What is reentrant tasks and functions, What is reentrant tasks and function...

What is reentrant tasks and functions Tasks and functions without optional keyword automatic are static , with all declared items being statically allocated. These items will b

Example to show a single digit, Q. Example to show a single digit ? Dis...

Q. Example to show a single digit ? Displaying a single digit (0 to 9) Presume that a value 5 is stored in BL register then to output BL as ASCII value add character ‘0' to

Explain cache-only memory access model (coma), Cache-Only Memory Access Mod...

Cache-Only Memory Access Model (COMA) As we have considered earlier, shared memory multiprocessor systems can use cache memories with each processor for decreasing the execution

State disadvantages of object oriented analysis design, State Disadvantages...

State Disadvantages of object oriented analysis design You know that OO methods only create functional models within objects. There is no place in methodology to design a compl

Static memories - computer architecture, Static memories Circuits c...

Static memories Circuits capable of receiving their state as long as power is applied volatile Static RAM(SRAM)

Define in detail about the architecture, Define in detail about the Archite...

Define in detail about the Architecture Architecture is the set of resources visible to machine language programmer: Registers, the memory, data representations, instructions

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