Rockbox Development > New Ports
SanDisk Sansa c200v2, m200v4, clipv1, clipv2, clip+, and fuzev2
atomikpunk:
Hi,
well yes I can help but honestly I'm not sure about the real usefulness of JTAG now. Sure it is very useful in case the device is bricked or for project that don't have safe bootloaders... But it this case, we now have a safe testing bootloader and e200's got a recovery method so...
But if you want to try it as academic learning, I'll try my best to help you. Private message me so we can get in touch in that case. :)
BTW, really looking forward the decompression method. If we can make it work and be sure it is safe, that would be nice. Good job! ;D
saratoga:
JTAG could still be useful for reverse engineering because it allows access to register values used by the OF.
Even for documented hardware (like the AMS DAC), a good deal of trial and error was needed on the V1 port to figure out good values, and even then we probably don't set everything quite as intelligently as the OF does.
linuxstb:
The new UCL compression method of adding our bootloader code to the OF now seems to be working. The code in SVN has been tested on a Clip, and also on an E200.
This latest code no longer adds anything into the padding at the end of the firmware block - so should work with any original firmware versions.
Some more success reports could be useful, but I think this is good enough to allow more development.
mbr:
--- Quote from: linuxstb on October 02, 2008, 08:42:01 AM ---Some more success reports could be useful, but I think this is good enough to allow more development.
--- End quote ---
Hi there,
I can confirm, that the code in subversion (r18682) works on my e250v2 with firmware e200pa-03.01.16.bin
Hillshum:
--- Quote from: mbr on October 02, 2008, 11:35:16 AM ---
Hi there,
I can confirm, that the code in subversion (r18682) works on my e250v2 with firmware e200pa-03.01.16.bin
--- End quote ---
r18684 works on my e260 with the same firmware
never mind it's r18679
Update: r18684 does work
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