Rockbox Development > New Ports
SanDisk Sansa c200v2, m200v4, clipv1, clipv2, clip+, and fuzev2
Bagder:
Hey,
We can discuss many things for these players generically, since they seem to share a lot, not the least the main chip AS3525. Which is why I created this new thread.
Speaking of this chip, I've got the data sheet from AMS for it.
Things we need to search for:
1. Figure out the firmware format. There seems to be a header with checksums of some sort, we need to figure them out.
2. We need to see if we can get some kind of recovery mode or something, that will enable us to try possibly bad firmwares and yet be able to recovery and get back to a working state.
3. We have disassembly work to do to figure out stuff that isn't in the data sheet, like LCD (this is likely to differ between the players)
My "sansa v2" summary page: http://daniel.haxx.se/sansa/v2.html
skaos:
Just a small detail: It looks like the Clip doesn't use SDRAM whereas the others do.
dan_a:
I've ordered a Clip from Amazon, and I'm going to start on getting the simulator to compile.
I've not been able to find the screen dimensions on the web - does anyone know them?
EDIT: ABI say that the Clip has a 128x64 screen.
saratoga:
--- Quote from: dan_a on November 29, 2007, 05:48:57 PM ---I've ordered a Clip from Amazon, and I'm going to start on getting the simulator to compile.
I've not been able to find the screen dimensions on the web - does anyone know them?
--- End quote ---
Given that the clip appears to have just 312KB of RAM, I'm not sure how feasible a rockbox port is.
dan_a:
Does anyone know anything about the file format for the firmware on the V2s?
Obviously it isn't the MI4 files as it is missing a PPOS header. It doesn't look like raw ARM code, although it is not encrypted. There is some kind of checksum, as I tried changing one of the strings and upgrading, and the upgrade didn't take.
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