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

What are simm and dimm, What are SIMM and DIMM? SIMM are Single In-Line...

What are SIMM and DIMM? SIMM are Single In-Line Memory Module. DIMM is Dual In-Line Memory Modules. Such modules are an assembly of various memory chips on a separate small boa

By which many computers are connected in geographical area, A large numbers...

A large numbers of computers in a wide geographical area can be efficiently connected using? A large numbers of computers in a broad geographical area can be efficiently linked

Determine 8-input multiplexer IC in the TTL family, The commercially availa...

The commercially available 8-input multiplexer integrated circuit in the TTL family is ? Ans. In TTL, MUX integrated circuit is 74153.

Discuss the csma/cd and csma/ca protocols, Discuss the CSMA/CD and CSMA/CA ...

Discuss the CSMA/CD and CSMA/CA protocols. CSMA/CD: this is an access method used mainly with LANs configured in a bus topology. Along with CSMA/CD, any station (node) can se

What is reduction, What is reduction?  A reduction is a way of changing...

What is reduction?  A reduction is a way of changing one problem into another in such a way that a solution to the second problem can be used to explain the first problem.

How many services are supported by internet, How many services are supporte...

How many services are supported by internet? The firewall software assists at least Internet services: HTTP, FTP, Gopher, SMTP and Telnet. DNS name resolution, preferably th

Capacity and performance of storage - computer architecture, Capacity: ...

Capacity: Raw capacity Total amount of stored information that a medium or storage device can hold is expressed as a quantity of bytes and bits (for example 10.4 megabyte

Categorized the optimization transformations, Categorized Optimization tr...

Categorized Optimization transformations The structure of program and the way in that data is defined and used in this provide vital clues for optimization. Optimization t

How many bits of data will be produced if voice is converted, If voice is c...

If voice is converted to digital form using PCM, how many bits of data will be produced in half a second? While voice is converted to digital by using PCM that is Pulse Code Mo

What do you mean by video memory, Q. What do you mean by Video Memory ? ...

Q. What do you mean by Video Memory ? As declared before video memory is also entitled framebuffer since it buffers video frames to be displayed. The quality of a video display

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