What kind of examples are you looking for? Just look at the source code..
Usually outb() is just a simple macro to the assembly 'out' instruction to
output a byte to a specific port.
You should be fine if you took some time to read the code that deals with 
all this.
----- Original Message ----- 
From: "Wojciech Puchar" <wojtek@tensor.3miasto.net>
To: <netbsd-users@netbsd.org>
Sent: Tuesday, May 20, 2003 6:20 PM
Subject: simple user level code to access ports


> are there examples?
> 
> tried i386_iopl(0); and then outb - core dumped
>