Modify the Real Time Clock Driver(more).

Hello! I want to have a more information about making or modifying the real time clock driver in win95 or in dos.
I will make a new device that supply real-time to PC.
and I will make the new-RTC driver replaced a old driver.
The experts "ESI" suggested that steals the interrupt, but
I don't know the method to steal. would you tell me the method.
Thanks in advance.
mgkimAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ESICommented:
Change the pointer of the interrupt to your part of code.
The address is in page 0, at 0x1C if I'm not wrong
(so long I had'nt to do low-level programming...)
Stop the initial interrupt b4 making the change, or
you probably will jump somewhere in the memory ;-)
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
mgkimAuthor Commented:
Sorry! "ESI" : I don't understand your answer. what is the pointer of the interrupt? is it the interrupt handler?
I guess that RTC-driver will be excuted when any application want to get the current time. then will interrupt be issued?
Also, I know that the RTC-drvier is not active, is passive.
It issues the interrupt when alarm is setting. Is my guess is wrong?
Anyway, thanks to your answer, sincerely!
0
ESICommented:
I figure out there are 2 differents interrupts, one that raise the alarm, and the other, the timer int. that raise about 18.2 times per second.
0
mgkimAuthor Commented:
Thanks to "ESI"'s response!
Will you introduce some reference(books)? or will I ask about more information using e-mail? otherwise will I ask more in this site?
my e-mail address : mgkim@hyowon.cc.pusan.ac.kr

0
ESICommented:
Try to ask, as I have no docs anymore (look for a DOS Interrupts  book) ask in this site after you had a look in the KB of microsoft indeed !
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows OS

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.