Unix Programming - Re: Need sample C code for access I/O ports

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Re: Need sample C code for access I/O ports

David Schwartz

2005-08-24, 9:56 pm

"Steven Woody" <anti-spam.narkewoody@gmail.com.dont-post-to> wrote in
message news:87u0hgnakp.fsf@narke.yellow.line...

> i got a mutipl-port serial board and need to write a simple C program to
> set
> its base addresses in a Linux box. according to the user manual of the
> board,
> the job can be accomplish be write/read some bytes to some specify IO
> ports.
>
> i got no more experiences in accessing IO ports in Linux, so i think i'd
> better
> find some simple code rather than coding from scratch.
>
> any help will be highly appreciated.

Read the man page for "iopl". But you are doing this the wrong way, you
should write a driver.

DS

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