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Re: Linux Device Drivers and I/O ports



What in hell are either of you talking about?  Maybe, after the
revolution and reassignment of what is worthwhile, will we be informed?
Cliff K7RRR

laura halliday wrote:
> 
> Frederick M. Spinner <fspinner@hotmail.com> wrote:
> 
> >The sloppy but fully controlable way of doing this is using ioperm / inb /
> >outb.  You ask Linux for permission to access the io range that
> >your printer port is on, and then you just chug away with in and outs to
> >the port....
> 
> Nothing sloppy about it; this is the official, documented
> way to do it.
> 
> Have a look at the IO-Port-Programming mini-HOWTO.
> 
> This doesn't give you interrupts, though. For that you
> need device drivers. Non-trivial, but not impossible,
> either.
> 
> Laura Halliday VE7LDH     "Que les nuages soient notre
> Grid: CN89lg                    pied a terre..."
> ICBM: 49 16.57 N 123 0.24 W        - Hospital/Shafte
> 
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