They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Sign up using Facebook. If you need to reset your password, click here. Hello, I am new to Linux, and have never used it before. Join our community today!
|Date Added:||15 December 2013|
|File Size:||11.73 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
inb – access I/O ports – Linux Man Pages (1)
If you really want to understand it you need to find the datasheets for the device that contains the interrupt controller, likely to be combined with a bunch of other logic on a big support chip. How do i do it? Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Sign inh using Facebook.
inb(2) – Linux man page
Not unlike CS, DS, etc creating separate memory spaces inside the chip before hitting the external memory space. Post as a guest Name. Do note that programs that use this communicate directly with whatever hardware or firmware is behind those ports. Are you new to LinuxQuestions.
If that doesn’t provide enough details to understand the commands and the linuc masks, you could always refer to the chip’s datasheet. Other architectures used one or more of the address bits to do the same thing.
inb (1) – Linux Man Pages
I came across this code to do it, but it makes use of these macros inb and outb. Usage of inb, inl, inw to access kernel space from user space Ask Question. It’s something an OS typically does to avoid the conflicts e. Post as a guest Name. Sign up or log in Sign up using Google. So mis-using them could cause serious problems. Email Required, but never shown.
You cannot run this program in user space; a fundamental principle of OS integrity security is that all hardware access goes through the kernel, so inb and outb will only work as part of a kernel module. Email Required, but never shown. Visit the following links: So when i am programming this OS, i cannot use the inbuilt libraries.
They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Find More Posts by rjlee. For example, the “A Programmable Interrupt Controller” datasheet http: You can read about the PIC here and here. Programming This forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.