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Date:      Sat, 10 Sep 2005 23:28:08 +0800
From:      "Paul Hamilton" <paulh@bdug.org.au>
To:        "'Roland Smith'" <rsmith@xs4all.nl>
Cc:        freebsd-questions@freebsd.org
Subject:   RE: Accessing the Digital IO pins on a VIA EPIA-PD motherboard - Second question
Message-ID:  <061801c5b61c$3f4a7170$6600a8c0@w2k2>
In-Reply-To: <20050910135145.GA89091@slackbox.xs4all.nl>

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Hi Roland,

Thanks for the VIA Forum tip.  I will see what they have to say.

Cheers,

Paul Hamilton

> -----Original Message-----
> From: Roland Smith [mailto:rsmith@xs4all.nl]=20
> Sent: Saturday, 10 September 2005 9:52 PM
> To: Paul Hamilton
> Cc: freebsd-questions@freebsd.org
> Subject: Re: Accessing the Digital IO pins on a VIA EPIA-PD=20
> motherboard - Second question
>=20
>=20
> On Sat, Sep 10, 2005 at 09:13:20PM +0800, Paul Hamilton wrote:
> > Ok, so it doesn't look like anyone knows anything about how=20
> to access=20
> > the DIO pins on this MB.
> >=20
> > Next question, How does one go about analysing the hardware to find=20
> > out what the io and interrupt addresses might be?
>=20
> Looking at page 5 of the manual for this mobo=20
> (http://www.viaembedded.com/product/Download.jsp?motherboardId
=3D241), it looks like there is a VT1211 super I/O chip connected to the
VT8235 southbridge.=20

The GPI/O is nowhere to be to been seen on this drawing, but the webpage =
for
the VT1211 (http://www.via.com.tw/en/products/peripherals/super-io/)
lists "56 General Purpose I/O Pins" My guess would be that that's what
you're looking for. You'd have to talk to VIA how the 8 pins on the mobo =
are
connected to the VT1211.

VIA has released an IrDA driver for the VT1211, but it is Linux-only and
binary-only.

You could write VIA and ask them to release enough documentation to =
allow a
driver for the digital I/O pins to be written.

Good luck.

Roland
--=20
R.F.Smith (http://www.xs4all.nl/~rsmith/) Please send e-mail as plain =
text.
public key: http://www.xs4all.nl/~rsmith/pubkey.txt




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