PnP guidance required

Doug Rabson dfr at
Sun Jul 25 12:36:23 BST 1999

On Sun, 25 Jul 1999, Richard Smith wrote:

> Since listening to Jordans radio interview the other day, I thought I'd
> try and get sound working on my home FreeBSD box. I've installed a new
> SB Pro PnP sound card (which pnpinfo calls a Creative ViBRA16X PnP).
> I've got the pnp0 controller, the snd0 controller, and the sb0, sbxvi0
> and sbmidi0 devices compiled into the kernel.
> How do you convince the hardware and the drivers to use the same IRQ?
> pnpinfo implies that IRQ 5 is a "good configuration", but (I think) that
> 10 is current being used. The sb0 driver is set to IRQ 5. man pnp(4)
> suggests a number of commands that I should be able to use to configure
> the hardware at boot time. But since the boot blocks changed a few
> releases ago, I'm not sure now, how to proceed.
> Can anyone suggest a "best practice" for PnP cards, and if applicable,
> give me an example of how to configure PnP hardware (automatically) at
> boot time?

With the current drivers, the best approach is to tell your BIOS that you
*don't* have a PnP capable OS. This is because the current PnP code in
FreeBSD can't assign addresses to devices and relies on the bios to do the
job. This will change when Cameron Grant and I commit the new sound and
PnP code respectively.

Doug Rabson				Mail:  dfr at
Nonlinear Systems Ltd.			Phone: +44 181 442 9037

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