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Main - ROM Hacking - Does anyone know how to use MMC5's PCM channel? New thread | New reply


infidelity
Posted on 02-16-13 11:08 AM Link | Quote | ID: 153437


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The NES reads the notes from the HW bank only ($C000-$FFFF)

The built in PCM for MMC5 reads it from $8000-BFFF.

My question is, has anyone tried this, or know anyone with experience in this?

Ive tried changing $4010 & $4011 to $5010 & $5011, but nothing happens. Plus, idk where the MMC5 would even load the PCM from whichever bank.

Any help would be greatly appreciated. I need to figure this out, cause I need to utilize that feature on the MMC5, because Link's flying sword sfx is suffering horribly due to my needed prg writes in the HW bank.

za909
Posted on 02-16-13 02:07 PM Link | Quote | ID: 153438


Cheep-cheep
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The MMC5 pcm channel is pretty undocumented and I thnik one game used it for a sound effect and that's it. There are a couple test nsf files around the net, but not much else, people always just used the internal 7-bit DAC instead.

infidelity
Posted on 02-16-13 04:12 PM Link | Quote | ID: 153440


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I obtained some of the games Disch makes reference to regarding thr mmc5 sound, but its difficilt to navigate through the games, they all come up garbage. I tried looking through some of the code, but I couldnt get it to log, most likely because I couldnt reach or do the acyion required to mske it log.

Thanatos-Zero
Posted on 02-19-13 10:00 AM Link | Quote | ID: 153455


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I do not know, if this helps you, but I seriously hope it does.
http://wiki.nesdev.com/w/index.php/MMC5_audio

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infidelity
Posted on 02-19-13 01:06 PM Link | Quote | ID: 153458


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I read this too. I had no luck. I tried signing up to nesdev, but for some reason I cant get through.

Main - ROM Hacking - Does anyone know how to use MMC5's PCM channel? New thread | New reply

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