🚀 go-pugleaf

In article <tglhpegaipbcsjonkm.pminews@news.darkstar.com.au>, Eric
Reaburn <ericreaburn@planet.earth.cyberdude.com> wrote:

>Dear Linux hackers, how difficult (easy?) is it to get low-level
>program access to the serial and parallel ports on an average pentium
>PC running Red Hat? Ideally I would like DOS-like direct access to the
>hardware, but I guess that's not possible from a "normal" program in
>Linux.

Indeed, and that's a Good Thing (tm).  To give low-level hardware
access to an average user program would subvert every part of Linux's
security and protection.

Which is not to say you can't get some kinds of low level access, just
that it requires that a program have special permissions.  Fairly low
level access to the serial and parallel ports is available through the
Linux devices /dev/ttyS0, /dev/ttyS1 etc.  Go read the programmers
guide for more info.

-- 
Jason Stokes: jstok (at) bluedog.apana.org.au
 
 Please note change of address.  Replace (at) with @ to mail me.