Re: [Qemu-devel] Re: Audio

[malc <malc@pulsesoft.com>]

On Thu, 4 Nov 2004, Jason Brittain wrote:

> Jason Brittain wrote:
> > Ronald wrote:
> >
> >> Le Thu, 04 Nov 2004 09:14:42 -0800, Jason Brittain a ?crit :
> >>
> >>> I'm not sure if other guests produce audio.  Know how to test this with
> >>> the dsl iso?
> >>
> >> With dsl 0.8.1.1: # modprobe sb io=0x220 irq=5 dma=1 dma16=5 isapnp=0
> >
> > This command runs with no complaints, and dmesg says
> > "SB 4.05 detected OK (220)", so I assume that works, although
> > dsl doesn't seem to come with any wav files that I can play
> > to actually test playing sounds.  Maybe I can pull one down
> > from the net.  But, if it detects and configures the device,
> > I'd mostly expect it to work.
>
> Actually..  I catted /bin/grep > /dev/audio to see if I could
> hear noise -- that didn't work.  Then, when I shut down dsl I
> noticed this:
>
linux/Documentation/devices.txt

 14 char	Open Sound System (OSS)
		  0 = /dev/mixer	Mixer control
		  1 = /dev/sequencer	Audio sequencer
		  2 = /dev/midi00	First MIDI port
		  3 = /dev/dsp		Digital audio
		  4 = /dev/audio	Sun-compatible digital audio

So it's /dev/dsp where your grep should have been catted to.
(Sun-audio is probably some uLaw device and there's no support for this
in current SB16 implementation)

> # qemu -user-net -enable-audio -cdrom dsl-0.8.2.iso
> sb16: attempt to set DMA register 8bit 1, 16bit 5 (val=0x22)

That's something to be expected.

> sb16: bogus command 0xce

0xce is ADC command, ADC is not supported

>
> That could have happened when I executed the modprobe command
> above.  Probably.  Seems like some kind of failure, but I
> don't know the severity.
>
>

-- 
mailto:malc@pulsesoft.com