Autor
| MP3 player for MSX
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Yobi
msx lover
Posts: 90 |  Postado em: 24 Fevereiro 2007, 14:12 |
Anyone interested in a Hardware MP3 player for MSX?
I'm currently working with Dennis Koller on one.
The PCB fits in a Konami case.
We us an extra ATMEL CPU for the communication with the MP3 decoder.
There is also an I2C interface from Philips used for controlling BASS/HIGH/Volume etc.
We already have an working prototype.
If you are interested, please let me know. Then we know how many we have to make, and what the price will be.
This weekend Dennis hopes to finish the final PCB layout. Then he send the layout to the manufacturer.
We hope to have the final product somewhere around April.
You can find a photo of the prototype over here : www.umf.be/viewtopic.php?t=2850
Greetz,
Yobi |
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wolf_
msx legend
Posts: 4603 | Postado em: 24 Fevereiro 2007, 14:16 |
y000000000biiiiiiiiiiii !!!!!111!!11! 
- Can it cope with 320kbps?
- Estimation of costs
- any chance of having the whole kab00z as one chip one could solder on a cartridge print, so that cart.games could use MP3 as music? |
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Yobi
msx lover
Posts: 90 | Postado em: 24 Fevereiro 2007, 14:37 |
Wolf !!!!!!!!!!!!!! 
- It can handle up to 320kbps.  But you better use a rate of 128kbps. Then you have more CPU power for other things.
- I'm not sure about the price yet.
- It now has the size of a full konami case.
I hope we can use it also for Internet Radio  |
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legacy
msx professional
Posts: 515 | Postado em: 24 Fevereiro 2007, 14:41 |
Cool, I'm very interesed.
I have already build a mp3 player, and a MSX can command the player using a rs232, but in fact it's a standalone player.
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Yobi
msx lover
Posts: 90 | Postado em: 24 Fevereiro 2007, 14:43 |
With this one you store MP3 files on your HD and you play them.
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Huey
msx professional
Posts: 578 | Postado em: 24 Fevereiro 2007, 14:58 |
Yobi,
So that was your secret project 
great work. |
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Abi
msx addict
Posts: 410 | Postado em: 24 Fevereiro 2007, 15:04 |
Yes great stuff, hope you can finish it and sell some! i want one too!!!
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wolf_
msx legend
Posts: 4603 | Postado em: 24 Fevereiro 2007, 15:21 |
more practically speaking: does it play (stream) an MP3 from an MSX storage medium, like CF, HD, CD, or must the whole MP3 be in MSX RAM? Or does the device come with its own RAM for that, and if yes: how much is there available?
Also what CPU were you talking about? The MSX CPU (Z80 or R800)? How is it used by the mp3 player device?
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legacy
msx professional
Posts: 515 | Postado em: 24 Fevereiro 2007, 15:27 |
Quote:
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Also what CPU were you talking about? The MSX CPU (Z80 or R800)? How is it used by the mp3 player device?
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May I guess??
CPU an Atmege and for encoding a VS100x |
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spl
msx professional
Posts: 715 | Postado em: 24 Fevereiro 2007, 15:34 |
Cool  I like it!!! (And I want one also when the project is finished )
Yes, I want one |
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Yobi
msx lover
Posts: 90 | Postado em: 24 Fevereiro 2007, 15:40 |
The MSX reads some bytes from a file and sends it to a small buffer of the 20 MHz ATMEL CPU. Then it will be sent to the MP3 decoder VS1011. This decoder plays the MP3. We can't sent it directly to the MP3 decoder cause it's all serial data. 
So there is a very small buffer. For a MP3 of 128kbps you need 16KByte/sec. But thats no problem for the MSX.
What the exact MSX CPU load is... don't know yet. |
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spl
msx professional
Posts: 715 | Postado em: 24 Fevereiro 2007, 15:41 |
Cool Also, how is the MP3 player software? |
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Yobi
msx lover
Posts: 90 | Postado em: 24 Fevereiro 2007, 16:45 |
The software is working but we need some more time for it.
It's all very basic work.
When it's all finished there will be a lot of information in a .doc file. (I/O registers etc)
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spl
msx professional
Posts: 715 | Postado em: 24 Fevereiro 2007, 17:17 |
Ok, thanks very much for your work  |
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poke-1,170
msx professional
Posts: 849 | Postado em: 24 Fevereiro 2007, 19:46 |
haha that's pretty damn awesome ^^
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