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

Illustrate high performance fortran, In 1993 High Performance FORTRAN Forum...

In 1993 High Performance FORTRAN Forum which is a group of academicians and many leading software and hardware vendors in field of parallel processing established an informal langu

Explain concurrent sharing, Explain Concurrent Sharing Here a number of...

Explain Concurrent Sharing Here a number of programs that may share a file simultaneously. While this is the case, it is necessary to prevent mutual interference among them. Th

Fully parallel associative processor (fpap), Fully Parallel Associative Pro...

Fully Parallel Associative Processor (FPAP):  This processor accepts the bit parallel memory organisation. FPAP has two type of this associative processor named as: Word Org

Database, what are the Database designs to avoid?

what are the Database designs to avoid?

What is branch prediction logic, What is Branch prediction logic Bran...

What is Branch prediction logic Branch prediction logic in Pentium: Pentium microprocessor uses branch prediction logic to decrease the time needed for a branch caused by in

What is mini computer, Q. What is Mini computer? The term minicomputer ...

Q. What is Mini computer? The term minicomputer introduced in 1960's when it was realized that numerous computing tasks don't need an expensive modern mainframe computers howev

Page directive include, What is the difference between, page directive incl...

What is the difference between, page directive include, action tag include? Ans) One difference is whereas using the include page directive, in translation time it is making t

Standards used for development of a system, Q. Standards used for developme...

Q. Standards used for development of a system? Documentation standards: It must be an ongoing activity at the time of system development life cycle.  Quality Standards:

Explain opening files for reading only in c, Opening Files for Reading Only...

Opening Files for Reading Only     : A data file is a file that you can open and read its contents visually - for example, C source files, .dat files, HTML etc - anything that look

State the concept of hierarchy in object oriented, Hierarchy Hierarchy...

Hierarchy Hierarchy is a process of ranking or ordering of abstraction. Hierarchy is decided by the help of 'divide and conquer' principle. Complex objects can be described

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