Does my MSX support +12v/-12v?

Por foody

Champion (441)

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02-06-2022, 03:11

I have one question to ask. I own a C2 and lots of games that suppose to produce music in my MSX2 does not produce music. I own a Sanyo Wavy J23 with two slots. Is this model the type where it doesn't suppose +12V/-12V? If so, how do you go around this issue so I can get the chipset in my C2 to work?

Thanks in advance.

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Por sdsnatcher73

Prophet (3378)

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02-06-2022, 07:27

The Wavy23 has 12V AFAIK. Did you try listening to the 3.5mm jack? What game did you try, how did you load it? C2MAN or SofaRun? What model do you have PHC-23 or PHC-23J? I can try on the PHC-23 and PHC-23J(B) which I have at the moment.

Por foody

Champion (441)

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02-06-2022, 08:32

I have the J23...I used rookie drive nx to load the game on disk and c2 on slot 2 and I hooked my headphone into the 3.5mm jack. Some games I can hear music, most none...others the music on the headphone jack not outputting to the TV and the TV only the sound effect and the headphone the music....

The game that is not producing music is Pumpkin Adventure 2, Pumpkin Adventure 3, and even Akin.

Por gdx

Enlighted (5576)

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02-06-2022, 09:16

According the web page below (in Korean) the Sanyo PHC-23J provides the -/+12V, SCC and FM audio volume is low but work.

https://m.blog.naver.com/bassone/222019471359

I think these games use the memory mapper. So if you run them from DSK image, them probably not work due to the DOS2.

Por sdsnatcher73

Prophet (3378)

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02-06-2022, 16:00

Okay try the following:

1. Enable PSG and PPI on the Carnivore 2.
2. Create a FM-PAC with RAM configuration using C2MAN (use expansion but only add RAM and FM-PAC).

Start the games from Rookie and select the new configuration in the C2 bootmenu. You should hear FM and PSG both from 3.5mm out.

The PHC-23 and PHC-23J both have good audio mixer, only the PHC-23J(B) has lower volume from the slots.

Por foody

Champion (441)

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02-06-2022, 18:13

THANK YOU!! WILL DO THIS RIGHT AWAY!!!!! - hugs @sdnatcher73 - this community need you!!!! Thank you sir! Let me try it out and report it.

Por foody

Champion (441)

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03-06-2022, 04:08

when you said create fm-pac with ram configuration do you mean flash fm-pac bios?

Por foody

Champion (441)

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03-06-2022, 05:01

Thank you soo mcuh sdsnatcher73, you are a life saver. I realized alsoz I had to configure it under slot section...I had to set Konami SCC+ followed by IDE, followed be 1 AM RAM and followed by FM-PAC. Akin now produces music beautifull!! When I reset it the MSX and placed pumpkin adventure 2 no music though! Sound coming to the TV just fine but no music. I am wondering if I should press f5 during bootup with msx in order to activate music as it does not find an cf card and tries to access rookie then...I am going to try the theory before trying tomorrow.

AAAH IT WORKED! IT WORKED!!! SDNATCHER73 you truly are the greatest contributer to the MSX community...it is will hit this community the largest blow if you ever leave us!!! Thank you sir for your help!! Thank you so much for all the help you have given me!! Now after a year...i can enjoy listening to in-game music and now I feel like I am really playing a console game!!!

Por sdsnatcher73

Prophet (3378)

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03-06-2022, 08:29

You are welcome!