Can interrupt be created in C without use of library functions

Question

1.00/5 (4 votes)

See more:

C++

<pre lang="c++">

What I have tried:

i dont know any thing about interrupt also so please explain

Posted 24-Mar-16 5:37am

Ravinder Singh

Updated 24-Mar-16 11:02am

Add a Solution

Comments

Patrice T 24-Mar-16 12:29pm

Google !
read rocumentation
explain what you want to do

Dave Kreskowiak 24-Mar-16 12:47pm

What kind of "interrupt" are you talking about? Hardware interrupts, software interrupts, something exposed by the O/S or BIOS? You're going to have to supply a deeper explanation of what you're trying to do if you want an answer to this.

Sergey Alexandrovich Kryukov 24-Mar-16 17:05pm

"Created" with software would assume software interrupts, but who knows? I tried to answer the question...
—SA

Ravinder Singh 26-Mar-16 2:38am

software interrupt relating bios.actually i am trying to create a thread library for turbo c(DOS) but i want to avoid system call n strict c without mixing other languages

Ashish Tyagi 40 2-Apr-16 12:24pm

Why you wanna avoid system calls only why not DOS?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2016-03-24T11:02:00

The question really makes no certain sense, because it all depends on the OS and CPU. When you are talking of "library", it probably means that you need to create a software interrupt. Hardware interrupts are only caused by hardware, your "library" can only handle them.

Now, modern OS are highly protected (and even hardware-protected) and don't give you direct access to interrupts. Some old stuff, like DOS, was broadly based on interrupts. With C++, you could create an interrupt using C++ inline assembler (see, for example, Inline Assembler[^]); and it never required any "libraries".

On 8088/8086 CPU family, it would look like

MOV AH, 0Eh
MOV AL, 'A'
INT 10h  ; BIOS interrupt, call to interrupt procedure

On modern systems, the trend is: software interrupts are not used at all, and the hardware interrupts can only be handled in the inner protection ring, in kernel mode, which is only designed for inner OS components and kernel-mode drivers. It's not possible to provide even a short introduction to these topics in a Quick Answer. See also:
Protection ring — Wikipedia, the free encyclopedia[^],
Kernel-Mode Driver Framework — Wikipedia, the free encyclopedia[^].

—SA