Rockbox Development > New Ports
Creative Zen Vision:M
ssjmichael:
Hi, my name is Michael. I'm the admin over at epiZENter.net, a new and very popular Creative fansite. There's been a great deal of interest for rockbox on the Zen Vision:M. I just want to ask directly to all rockbox members whether the Vision:M is really capable of being rockbox'd.
I've read through a few threads and other forums, and the consensus seems to be, that TI doesn't really reveal their documentation, and there are no free compilers available for the TMS320 DSP. Now is this the nail on the coffin, or is there a way around this?
Someone mentioned this and I want to know if it holds any relevance to the free compiler issue:
--- Quote ---The TMS320DM320 is a dual core ARM9/DSP chip. The ARM part of it can be targeted by an ARM compiler. The Cowon A2 also uses the TMS320DM320 chipset and has a GPL Linux firmware. You can download the source code from Cowon's website. They don't mention that you need any commercial compilers to build the firmware from the sources... Maybe the RockBox folks should have a look at that source code...
--- End quote ---
Now we will be gathering money to get a test player, which will be opened up and scanned. What we lack are people with knowlege. We are willing to send the player to someone who is willing to devote their time to helping us, but only if people here feel the Vision:M has any chance of getting cracked.
If you want to help us, please join us in discussion at epiZENter.net. Thank you.
LinusN:
The problem is not the ARM core, it's the MS320 DSP core, which we will need to program to play audio. If we are lucky, we won't have to write much DSP code, so we may get by writing in assembly language.
Before you waste your money, find out as much as you can about programming this chip.
Bagder:
The DSP part is clearly the trouble in this beast and it takes more research on how exactly that is needed or even if it is needed for this particular player.
I'd guess that investigating Neuros newest players and their source code would indeed be helpful too.
But yes, I firmly believe this player can be reprogrammed and get Rockboxed, but it will take a serious amount of time and effort by skilled people.
And a last advice: if you want help and assistance from Rockbox developers, you should come here and not try to get us to visist yet another random forum somewhere else.
ssjmichael:
Thanks. I will be visitng here quite often. That invitation was for other Vision:M owners to read up on our discussion over at epizenter in order to get as much support as possible for our players. Sorry, should've been more specific.
I do wish I knew more about this stuff, or someone over there knew something, but I will try my best to read info over here and look for the neuros source code, etc...
saratoga:
Do we have any idea what the DSP is used for? Looking at the doc's on TI's site, it looks to be fairly FPU heavy, something thats not too important for audio. It may be that they just use it for video, or mostly for video.
If thats the case, then you could get by with just assembly, since you'd hopefully not need it for anything important.
I don't suppose anyone has had the courage to try and dissassemble creative's firmware and see what they do?
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