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

Explain about batch system, Q. Explain about Batch System? A number...

Q. Explain about Batch System? A number of computer systems only did one thing at a time. They had a list of computer system can be dedicated to a single program till its c

Explain process of file transfer protocol, Q. Explain process of File Trans...

Q. Explain process of File Transfer Protocol? FTP (File Transfer Protocol), a standard Internet protocol, is the simplest way to exchange files between computers on Internet. L

What are universal gates, What  are  universal  gates.  Construct  a  lo...

What  are  universal  gates.  Construct  a  logic  circuit  using  NAND  gates  only  for  the expression x = A . (B + C). Ans. Universal Gates: NAND and NOR Gates both are t

What are the ways to truncate guard bits, What are the ways to truncate gua...

What are the ways to truncate guard bits? 1. Chopping 2. Von Neumann rounding 3. Rounding procedure.

Microprocessor and interfacing, Write an ALP to count positve and numbers f...

Write an ALP to count positve and numbers from array.

Classify scheduler, Classify Scheduler. Scheduler is a kernel function ...

Classify Scheduler. Scheduler is a kernel function decide which method  be  thought to be implemented by the processor: the scheduler scans the list of processes in the ready s

Concept of mouse, The concept of Mouse was designed by Douglas C. Engelbart...

The concept of Mouse was designed by Douglas C. Engelbart of Stanford Research institute and first Mouse was designed by Xerox corporation.  Mouse itself is a device that gives you

Digital forensics, a) What do you meant by digital forensics? b) What ...

a) What do you meant by digital forensics? b) What is the job of Computer Forensic Analyst c) From the point of view of : i. An employer ii. An employee Give thre

Evaluate 23 - 48 using the 2's complement method, Perform the 23 - 48 opera...

Perform the 23 - 48 operations using the 2's complement method. Ans. Given 23 - 48 firstly add them       23                         0 1 0 1 1 1 - (- 48)                     +

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