>>>>> "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.
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.
sven> Sven Lübke <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
Please, no html in mail.
Bye
-- Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.deInstitut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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