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namco 129 sound
http://forums.nesdev.com/viewtopic.php?f=11&t=10051
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Author:  naruko [ Mon Apr 29, 2013 3:42 am ]
Post subject:  namco 129 sound

129 に Flash memory と SRAM を完全に設置しました。

一部ご質問がありましたので録音しました。私は音源に詳しくないのですが、8ch を使用している場合は 163 と挙動が異なり、音が歪むようです。録音したデータの一部は私がフェードアウトをいれました。

Video 関連の機能は 163 と同じでした。Mappy Kids は Nametable に ROM を使っていますが、動作しています。

DDS2
http://www1.axfc.net/uploader/so/2884713.mp3

Final Lap
http://www1.axfc.net/uploader/so/2884714.mp3

King of Kings
http://www1.axfc.net/uploader/so/2884715.mp3

Mappy Kids - かなりひどい
http://www1.axfc.net/uploader/so/2884720.mp3

三国志II
http://www1.axfc.net/uploader/so/2884722.mp3

えりかとさとるの夢冒険 - かなりひどい

Attachments:
erikatosatoru_1.mp3 [1011.22 KiB]
Downloaded 205 times
erikatosatoru_0.mp3 [1.98 MiB]
Downloaded 249 times

Author:  naruko [ Mon Apr 29, 2013 4:02 am ]
Post subject:  Re: namco 129 sound

mappy kids のプログラムでフェードアウトをかけていると間は音が正常に聞こえるような気がしますね。
8ch サンプリング機能は持っているものの、各チャンネルの音出力を加算したときに桁が足りなくてオーバーフローして音がおかしくなるのかなとちょっと思いました。

Author:  B00daW [ Wed Jul 24, 2013 10:11 am ]
Post subject:  Re: namco 129 sound

あなたはナムコット129 PCBの写真を撮って、ここでそれらを添付することができます、してください?

(Google Translated)

Can you take pictures of the Namcot 129 PCBs and attach them here, please?

Author:  lidnariq [ Wed Jul 24, 2013 10:23 am ]
Post subject:  Re: namco 129 sound

viewtopic.php?p=78307#p78307

Author:  rainwarrior [ Wed Jul 24, 2013 10:55 am ]
Post subject:  Re: namco 129 sound

Very curious! I wonder what causes the strange sound in Mappy Kids?

Was the N129 used in any games for sound? Or was it only sound-capable but never utilized?

Author:  B00daW [ Wed Jul 24, 2013 11:00 am ]
Post subject:  Re: namco 129 sound

I'm also curious if you can obtain a TNS-HFC cartridge and play Mappy Kids NSF with a N163 cartridge and again with a N129 to record and document differences.

Author:  lidnariq [ Wed Jul 24, 2013 11:26 am ]
Post subject:  Re: namco 129 sound

As far as we know, no games used the 129 for sound. Probably because the audio hardware was buggy, as is shown by the recordings.
Naruko's copy of Star Wars has the 129 bypassed (0 ohm resistor from "audio from 2a03" to "audio to rf")

Author:  naruko [ Wed Jul 24, 2013 3:24 pm ]
Post subject:  Re: namco 129 sound

129はスターウォーズだけに使われている163の初期バージョンと思われる IC です。
録音に使用した基板はサウンド部分を 163 向けのサウンド出力回路と同様するために 10kohm の抵抗をいれてあります。

Author:  jrlepage [ Fri Jul 26, 2013 11:02 am ]
Post subject:  Re: namco 129 sound

If anyone wants to send me a N129 cart, I'd be happy to record some stuff from my TNS-HFC3.

EDIT: Star Wars seems to be pretty cheap on eBay. Maybe I can get my own cart. Do I have to mod it before I can record anything? I'm seeing stuff about resistors but I'm not certain I understand.

Author:  lidnariq [ Fri Jul 26, 2013 11:26 am ]
Post subject:  Re: namco 129 sound

I don't know how the TNS-HFC3 works, but, if the cartridge is just inserted directly into a famicom, the AUDIO FROM 2A03 and AUDIO TO RF signals are just jumpered, and the 129's DAC can't drive it at all.

If the HFC3 can isolate the cartridge's sound hardware from the 2A03, then you don't need to modify the cartridge.

If you do have to modify it, you'll need to cut a trace, and then if you want to mix 2A03 sound, you'll need to solder a resistor in.

This is the trace:
Attachment:
trace-to-cut.jpg
trace-to-cut.jpg [ 24.92 KiB | Viewed 14524 times ]


Apparently only the earliest Star Wars cartridges have a 129, though; the ones that BootGod has doesn't.

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