Subject: Re: indy audio
To: Steve Rumble <>
From: Martijn Bakker <>
List: port-sgimips
Date: 07/16/2003 09:56:47
On Tue, Jul 15, 2003 at 06:15:17PM -0400, Steve Rumble wrote:
> On Tue, 15 Jul 2003 13:15:19 -0700
> Shelby Noonan <> wrote:
> > Is anyone working on this?  Does anyone have info on how to so I can
> > try?
> I don't believe that there exists any released documentation on HAL2,

There is little released documentation, but Linux has audio working on it.
Even the volume buttons on the fromt work.

BTW, if I press the buttons when running NetBSD, I get a panic. Is that
normal ?

> the IP22/24/26 audio hardware. Indigo audio hardware is based on some
> motorola chips, I believe, which utilize the HPC1.5, so it's not
> inconceivable that support could be written by obtaining documentation
> for the audio chips while gleaning the HPC3 interface from IRIX headers.
> However, it would likely be a less than simple affair. I also do not
> have any idea precisely what drives the audio on the HAL2 - sgi may have
> spun something themselves for that project.
> -Steve

grtz, Tijn