How can we write an interrupt servicing routine, Computer Engineering

Assignment Help:

Q. How can we write an Interrupt Servicing Routine?

The following are the fundamentalthough rigid sequence of steps:

1. Save the system context (flags,registers etc. which will be modified by the ISR).

2. Disable the interrupts which may cause interference if allowed to take place during this ISR's processing

3. Enable those interrupts which may still be allowed to occur during this ISR processing.

4. Determine cause of the interrupt.

5. Take the suitable action for the interrupt like - receive and store data from serial port, set a flag to specify the completion of the disk sector transfer etc.

6. Restore the system context.

7. Re-enable any interrupt levels which were blocked during this ISR execution.

8. Resume execution of the process which was interrupted on occurrence of the interrupt.

MS-DOS offers you facilities which enable you to install well-behaved interrupt handlers such that they won't interfere with the operating system function or other interrupt handlers. These functions are:

1676_How can we write an Interrupt Servicing Routine.png

Related Discussions:- How can we write an interrupt servicing routine

Concept of multithreading, Concept of Multithreading: These troubles incre...

Concept of Multithreading: These troubles increase in the design of large-scale multiprocessors such as MPP as discussed above. Thus, a solution for optimizing this latency should

Neural network for two predictors thickness, 2) Consider the following neur...

2) Consider the following neural network for two predictors Thickness and Alignment and two classes Print Quality High and Low. Some weights are shown in the table, including weigh

Coupling and cohesion, Coupling and cohesion can be shown using a:- Dep...

Coupling and cohesion can be shown using a:- Dependence matrix

Elucidate basic time division time switching method, With the help of block...

With the help of block diagram Elucidate basic time division time switching method. Basic Time Division Switching: Functional blocks of a memory based time division switching

Describe critical directive in fortan, Q. Describe Critical Directive in FO...

Q. Describe Critical Directive in FORTAN? The critical directive permits one thread executes associated structured block. When one or more threads attain critical directive the

Micro-programmed control, Q. MICRO-PROGRAMMED CONTROL? A substitute to ...

Q. MICRO-PROGRAMMED CONTROL? A substitute to a hardwired control unit is a micro-programmed control unit in which logic of the control unit is specified by a micro-program. A m

Write a program to read in a positive integer, Write a program to read in a...

Write a program to read in a positive integer and check whether it is prime or not? /* Program to check whether a given number is prime or not*/] # include # include

Addition NO-SIGNS to the Write statement, Suppressing the number signs (+/-...

Suppressing the number signs (+/-) is carried out using the addition NO-SIGNS to the Write statement. Statement is false.

Explain criteria for choosing type of file organization, What criteria shou...

What criteria should be adopted for choosing type of file organization. Selecting a file organization is a design decision; therefore it must be done having in mind the achieve

Define clock rate, Define clock rate? The clock rate is given by, R=1/P...

Define clock rate? The clock rate is given by, R=1/P, where P is the length of single clock cycle.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages