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Hardware - MP3 player for MSX

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MP3 player for MSX

legacy
msx professional
Mensajes: 516
Publicado: Abril 23 2007, 23:12   
If I see it right, the grip is on the bottom, and the devices are mostly on the top of the pcb, a good chance it wil fit.
Yobi
msx lover
Mensajes: 95
Publicado: Abril 24 2007, 07:20   
Sorry we also have a lot of devices on the bottom of the pcb.
spl
msx professional
Mensajes: 758
Publicado: Mayo 06 2007, 08:29   
Any news?
Yobi
msx lover
Mensajes: 95
Publicado: Mayo 06 2007, 10:49   
I received the players yesterday.
So now they are ready for shipment.
Latok
msx master
Mensajes: 1734
Publicado: Mayo 06 2007, 11:11   
YEAH! How are you going to do it, Yobi? Everyone gets an e-mail and has to transfer money first?
Yobi
msx lover
Mensajes: 95
Publicado: Mayo 06 2007, 11:50   
Yep... today
spl
msx professional
Mensajes: 758
Publicado: Mayo 06 2007, 17:10   
Cool, I am waiting for your email (There will be Paypal available?)
Oscar
msx addict
Mensajes: 281
Publicado: Mayo 07 2007, 14:12   
Paypal will be good. Yobi, have you already sent the emails? I have not received it. Thank you!
wolf_

msx legend
Mensajes: 4780
Publicado: Mayo 07 2007, 15:00   
yobi: did you already do some performance tests, regarding practical usage behind a game? Not just a dull boardgame, but an action game or at least a game in which a lot of screenstuff happens each one or two ints, this in combination with streaming from a mass-storage-medium..
NYYRIKKI
msx master
Mensajes: 1528
Publicado: Mayo 07 2007, 16:06   
@wolf I don't need a MP3 cart to tell that streming from mass-storage device during gameplay is not an easy task. DOS functions are way too slow and custom routines usually end up with limited support for different devices.
Prodatron
msx master
Mensajes: 1110
Publicado: Mayo 07 2007, 17:47   
Great news!
@Wolf: I still hope, that I am right with about 25% CPU usage when playing 128kbit MP3s from hard disc. That should be it for SymbOS, maybe it's similiar in MSX-DOS. But we will see it very soon, I hope!
I also didn't receive an email yet (I can see, that everyone is very impatient now )
wolf_

msx legend
Mensajes: 4780
Publicado: Mayo 07 2007, 17:49   
Prodatron: this 25%, is that a constant number per int, or a peak every now and then -say each 60 ints-? That's the point here. You don't want an action game with a performance hickup each second. For a GUI like SymbOS all that might be less of an issue btw.. not sure tho..
Prodatron
msx master
Mensajes: 1110
Publicado: Mayo 07 2007, 19:30   
That should be 50:50...
Uploading data to the MP3 card will be done every int, so the CPU usage here will be distributed as smooth as possible.
But loading new data from harddisc... I am not sure yet, how smooth this can be made. It will be smooth, if you load small data pieces from hard disc a lot times, but the overhead will be bad for the performance, so loading bigger pieces is faster but generates hickups. As soon as I can test it, I will play around with the different factors.
manuel
msx guru
Mensajes: 3547
Publicado: Mayo 07 2007, 19:51   
wolf: CPU usage percentages are always averages, as a single core CPU can only do one thing at a time.
spl
msx professional
Mensajes: 758
Publicado: Mayo 08 2007, 12:08   
I have just paid the MP3 cart ^-^. Now waiting for it
 
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