Opl3 Yamaha7xx questions

Opl3 Yamaha7xx questions

[Philip Thiem]

I've been running up again the FM synethesis wall with my aopen card and 
conflicting information, and finally decided to post to the dev group.

>From some skimming of technical documentation for ymf754.  It looks like 
the ymf7xx family has an opl3 capability on the chip, once the nessacary 
information is given to the card through a mapped pci configuration 
register.  Is this correct, so that the card is opl3 compatible once the 
ISA legacy device is told where to "listen" for fm commands?

This all stems from my odessy trying to get fm synth to work on the
YMF744B.  I keep getting the feeling I'm overlooking something simple.  So
if anyone could offer advice or a plan of attack it would be appreciated. 
I've
included a link to copy of my last email with all the gathered information. 
The primary things that have changed is adding this line to my modules.conf
   options snd-ymfpci snd_mpu_port=0x330 snd_fm_port=0x388
I don't think much of the other stuff has changed, but could fetch any 
required information.  Also I don't seem to have any mixer control for a 
synth or fm device.  I have been running a compile of cvs which I checked 
out originally around late-august, tried updating the tree about week 
around but I ran into compiles problems.
Here's that link:
   http://www.icequake.net/~witwerg/ymfpci.txt
Once I get the modules compiled, I wanted to try cleaning out what I have, 
and
reconfiguring with debugging options turned on.

Thankyou
Philip Thiem

GPG Pub Key Archived at wwwkeys.us.pgp.net
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Re: Opl3 Yamaha7xx questions

[Takashi Iwai]

At Sun, 06 Oct 2002 23:25:13 -0500,
Philip Thiem wrote:
> 
> I've been running up again the FM synethesis wall with my aopen card and 
> conflicting information, and finally decided to post to the dev group.
> 
> >From some skimming of technical documentation for ymf754.  It looks like 
> the ymf7xx family has an opl3 capability on the chip, once the nessacary 
> information is given to the card through a mapped pci configuration 
> register.  Is this correct, so that the card is opl3 compatible once the 
> ISA legacy device is told where to "listen" for fm commands?
> 
> This all stems from my odessy trying to get fm synth to work on the
> YMF744B.  I keep getting the feeling I'm overlooking something simple.  So
> if anyone could offer advice or a plan of attack it would be appreciated. 
> I've
> included a link to copy of my last email with all the gathered information. 
> The primary things that have changed is adding this line to my modules.conf
>    options snd-ymfpci snd_mpu_port=0x330 snd_fm_port=0x388
> I don't think much of the other stuff has changed, but could fetch any 
> required information.  Also I don't seem to have any mixer control for a 
> synth or fm device.  I have been running a compile of cvs which I checked 
> out originally around late-august, tried updating the tree about week 
> around but I ran into compiles problems.
> Here's that link:
>    http://www.icequake.net/~witwerg/ymfpci.txt
> Once I get the modules compiled, I wanted to try cleaning out what I have, 
> and
> reconfiguring with debugging options turned on.

the options look already good.  perhaps only the mixer issue.

on the YMFPCI chip, the FM might be connected to Aux.
try to turn on Aux Playback and raise its volume.


Takashi


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Re: Opl3 Yamaha7xx Answered

[Philip Thiem]

Takashi,

I was going to send this message:

>Thank you very much for your response, I appreciate the help.
>I turned AUX up, but that doesn't seem to have helped.
>
>I've also taken the opportunity to update my system info textfile.
>Overview of changes:
>        * latest CVS stuff
>        * verbose-printk and debug=full are compiled in
>        * cleaned up my startup to use a stock init.d script
>        * extra modprobes and opl3 patches now loaded in
>          /etc/alsa.d/ymfpci
>        * aux turned up all the way
>        * included a test program I wrote to use the
>          /dev/dmfm interface.
>
>        http://www.icequake.net/~witwerg/ymfpci.txt
>
>Thanks to all,

However, I got an urge to kernel hack and added a mixer for
the FM synth.  I also tried to make sure that the ioport for
volume wasn't being written to or read from, if the card didn't
have fm enabled.  However, it works!  I have fm synth now.
The following is what `cvs diff` outputs in regards to the
alsa-kernel directory.  If the patch isn't in a usable format,
one might have to tell me the exact CVS arguments to use:

         http://www.icequake.net/~witwerg/ymfpci-patch.txt

Thanks all,

Philip Thiem

>
> the options look already good.  perhaps only the mixer issue.
>
> on the YMFPCI chip, the FM might be connected to Aux.
> try to turn on Aux Playback and raise its volume.
>
>
> Takashi



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Re: Opl3 Yamaha7xx Answered

[Takashi Iwai]

At Tue, 08 Oct 2002 17:18:27 -0500,
Philip Thiem wrote:
> 
> Takashi,
> 
> However, I got an urge to kernel hack and added a mixer for
> the FM synth.  I also tried to make sure that the ioport for
> volume wasn't being written to or read from, if the card didn't
> have fm enabled.  However, it works!  I have fm synth now.
> The following is what `cvs diff` outputs in regards to the
> alsa-kernel directory.  If the patch isn't in a usable format,
> one might have to tell me the exact CVS arguments to use:
> 
>          http://www.icequake.net/~witwerg/ymfpci-patch.txt

thanks for bug spotting!
i changed to activate LEGACYOUTVOL and added the volume control on
cvs.


ciao,

Takashi


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