Writing down your own interrupt service routines, Computer Engineering

Assignment Help:

Q. Writing down your own Interrupt Service Routines?

Here are a few rules which should be kept in mind while writing down your own Interrupt Service Routines:

1.  Use Int 21h, function 35h to get the needed IVT entry from IVT. Save this entry for later use.

2.  Use Int 21h, function 25h to modify IVT. 

3.  If your program isn't going to stay resident then save the contents of the IVT and later restore them when your program exits.

4.  If your program is going to stay resident then use one of the terminate and stay resident functions to reserve proper amount of memory for your handler.


Related Discussions:- Writing down your own interrupt service routines

Building is into our operational processes, Building IS into our operationa...

Building IS into our operational processes - Information System Although information systems are becoming increasingly prevalent they are not always the correct solution to ev

Illustrate processor arrangements, Q. Illustrate processor arrangements? ...

Q. Illustrate processor arrangements? HPF$ PROCESSORS P2 (4, 3) !HPF$ TEMPLATE T2 (17, 20) !HPF$ DISTRIBUTE T2 (BLOCK, *) ONTO P1 Means that first dimension of T2 woul

Complicated question, Hi I need a help in this question : A telephone sw...

Hi I need a help in this question : A telephone switchboard handles ? calls on average during a rush hour, and the switchboard can at most make k connections per minute. Write a

EME, How can i made Carnot engine

How can i made Carnot engine

Signaling pvm process, Q. Signaling PVM process? int pvm_sendsig( ...

Q. Signaling PVM process? int pvm_sendsig( int tid, int signum ) Transmits a signal to other PVM process. tid is task identifier of PVM process to receive signal.

Dos function calls, INT 21H supports about 100 different functions. A funct...

INT 21H supports about 100 different functions. A function is recognised by putting the function number in AH register. For illustration if we want to call function number 01 then

What is ai, Artificial intelligence ("AI") can mean a lot of things too man...

Artificial intelligence ("AI") can mean a lot of things too many people. Much confusion arises that the word 'intelligence' is ill-defined. The phrase is so broad that people have

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