Date: Mon, 2 Jul 2001 11:26:15 -0400
From: David Nedved <[EMAIL PROTECTED]>
Subject: Re: Strange issue with opl3sa2 driver under linux 2.4.4
Hello Christian,
I read somewhere online that there is a considerable difference in sound
quality on our chipset when using the different drivers. The opl3sa2
driver I believe is 16bit while the opl3sa driver is 8bit. I didn't even
try to get the opl3sa driver working.
I'm not much on MIDI, but I believe that the mpu401 emulation is what your
midi player will use. You might want to explore and try to find out if
your chipset is listening on the default port (0x330) or a different one...
I don't have any MIDI files, but if you want to tell me where to get a file
and a player I can try to duplicate your problem if that will help...
Good luck,
David
On Mon, Jul 02, 2001 at 01:45:24AM -0700, Christian Gennerat wrote:
> Date: Mon, 02 Jul 2001 10:38:14 +0200
> From: Christian Gennerat <[EMAIL PROTECTED]>
> Subject: Re: Strange issue with opl3sa2 driver under linux 2.4.4
>
> David Nedved a �crit :
>
> > Date: Fri, 29 Jun 2001 13:33:17 -0400
> > From: David Nedved <[EMAIL PROTECTED]>
> > Subject: Re: Strange issue with opl3sa2 driver under linux 2.4.4
> >
> > Merci beaucoup J�r�me! You are indeed correct, somehow you saw through my
> > rantings, and although I thought I had tested everything extensively and
> > scientifically, it does indeed work with 0x370...
> >
> > Now I have an alias in /etc/modules.conf so that all I have to do is
> > modprobe opl3sa2 and everything works... if you don't mind I'd like to ask a
> > few questions about getting it a little more automated...
> >
> > 1.) any idea how to get it automatically inserted when I try to use the sound
> > card? (For ethernet cards I know you alias eth0 to the driver name,
> > but aliasing dsp and sound to opl3sa2 don't seem to work)
> > 2.) any ideas how to avoid the "opl3sa2: Control I/O port 0x370 is not free"
> > messages since they are apparently bogus?
> > 3.) any ideas what to do to make it work when compiled into the kernel?
> > a line in lilo to pass parameters to the kernel?
> >
>
> 1) something like
> alias sound-slot-0 opl3sa2
>
> 4) I actually use opl3 instead, and it works.
> I have tried opl3sa2 with your parameters, and I can play wav.
> when I try to play mid, I have the message:
> modprobe: modprobe: Can't locate module synth0
> what is wrong in:
> modprobe soundcore
> modprobe sound
> # modprobe ad1848 io=0x530 irq=5 dma=1
> # modprobe opl3 io=0x388
> modprobe opl3sa2 io=0x370 mss_io=0x530 mpu_io=0x330 irq=5 dma=1 dma2=0
> grep -q opl3 /proc/modules && modprobe opl3sa2 io=0x220 mss_io=0x530 mpu_io=0x330
>irq=5 dma=1 dma2=0
>
>
>
>
>
>
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