Re: getting 1394 port information

How would I find out if it is a multi-port card? I'm don't quite undestand
the concept of a multi-port card. Here is a link to the type of card I
have.
http://www.motionio.com/
As you can see, there are 3 physical ieee1394 connectors. If I connect a
camera to one of the physical connectors, is it possible to know from which
connector the camera is connected to? I use the libdc1394 library routines,
but it doesn't seem possible.
Thanks.

>From: Dan Dennedy <dan@dennedy.org>
>To: pat leang <pkleang@hotmail.com>
>CC: linux1394-user <linux1394-user@lists.sourceforge.net>
>Subject: Re: getting 1394 port information
>Date: Sat, 31 Jan 2004 16:17:26 -0500
>
>On Fri, 2004-01-30 at 17:37, pat leang wrote:
> > I have an ieee1394 card that can support up to 3 firewire cameras. I
>was
> > wondering if it is possible to determine which port the cameras are
>attached
> > to. Each camera has a unique GUID, and sometimes they are connnected to
> > different ports on the ieee1394 card. I'd like to be able to find where
> > each camera is connected on the card by matching their GUID with the
>port.
> > Is this possible? and how?
> >
>No, the physical connector on the card is meaningless unless you have a
>multi-port card. But your usage of the term "port" differs from what I
>mean by a "multi-port card." In IEEE 1394 terms, a "port" refers to a
>virtual host adapter. In IEEE 1394, the software interface knows nothing
>about physical connectors. However, on a multi-port card, some connector
>are assigned to one virtual host adapter or another. What is the model
>of your adapter?
>
><< signature.asc >>

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Received on Sun Feb 1 10:50:33 2004