-------- Original Message --------
Subject: Re: [PARPORT] Parallel Port Mode switching via normal C-code possible?? (08-Mrz-2002 13:19)
From: bon@elektron.ikp.physik.tu-darmstadt.de
To: sven.luebke@auerswald.de
> >>>>> "sven" == sven luebke <sven.luebke@auerswald.de> writes:
>
> sven> Hi!! I have to reconfigure the parallel port mode (ECP, EPP,
> sven> Standard etc.) via normal C code AND NOT via BIOS. I know, that
> sven> this is not a clean way, but it's the only one :-). Could you
> tell
> sven> me, to which address I have to write which value, if I want to
> sven> switch between EPP, ECP and standard mode?! Is this possible at
> sven> all?? Thanx for your help...
>
> The mode of the parallel port on normal motherboards is controlled by the
> Super-I/O Chip. There are a lot of Super-I/O chips on the market, and all
> differ. So you would need a kernel module which would change the mode
> triggered by some ioctrl. I don't know of an effort in Linux do make this
> level accessible.
Sorry, it's not for a Linux driver. Just MS-DOS environment...
I know, I'm in the wrong mailinglist, but I didn't find a MS-DOS parallel
port "discussion board"...
> In the 2.0 kernel time frame I wrote a "smcio.c" module, which allowed me
> to
> do so on a motheboard with a FDC37C66[56] chip. I can send you the code on
> request.
Well, as you said, every chip needs his own specific code, your code
is really only for this chipset? Or did you test it with some other
chipsets?
> sven> Sven Lübke <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
>
> Please, no html in mail.
Oh, sorry, I didn't check this. Hopefully removed it!?
Thanx for your help...
Bye,
Sven
To: bon@elektron.ikp.physik.tu-darmstadt.de
Cc: linux-parport@torque.net
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