Bug Hunter wrote:
> I'm running as root, trying to do i/o to one of the
> parallel port areas using this program fragment:
>
> main()
> {
>
> iopl(2);
>
> outb(0,0x3bd);
>
> }
>
>
> IOPL is successful. However, I get a segmentation fault
> at the outb() call.
IIRC, you need to use iopl(3) to obtain access to I/O ports. In
general, it's preferable to use ioperm() to obtain access only to the
specific I/O ports which you need. You only need to use iopl() if you
need to access ports above 0x3ff.
--
Glynn Clements <[EMAIL PROTECTED]>
