Rockbox Development > New Ports
SAMSUNG YH-920
Llorean:
On several players the bootloader (or firmware image itself) is stored in a separate flash ROM, and there's no way to access it via the disk.
pyro_maniac:
That is only accessable in a special player mode or with JTAG?
Llorean:
It depends entirely on how they've designed the hardware. There's no guarantee that it's externally accessible at all without coming up with a way to directly read such a chip yourself.
Or it may just be somewhere you haven't looked yet.
There's really more or less unlimited flexibility in how they can design such a device, so you want to try not to have too many expectations in where you'll find it based on previous devices.
pyro_maniac:
That sounds very difficult to me. So i have only the chance to run my own firmware with that bootloader. That makes me a very sad.
funman:
--- Quote from: pyro_maniac on December 09, 2008, 04:08:14 AM ---That sounds very difficult to me. So i have only the chance to run my own firmware with that bootloader. That makes me a very sad.
--- End quote ---
That's already a good start !
What do you need to see that is in the bootloader and would not be in the firmware file?
Now I think you must disassemble the firmware and look for known PP registers to find what could be access to the buttons, LCD .. and try to reproduce the behaviour in your own (C / assembly) code.
I'm not familiar with PP, but I would start looking at the files firmware/export/pp*.h
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