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But is where a way to dump full RAM from working player? It will really help in disasm. I can write a simple elf, but maybe special software exists?
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I believe it is possible via serial port on the RK27xx - as far as I know serial port is sharing its pins with other parts of the player. Someone here (long time ago) claimed that he is able to debug and access memory via this serial port. But It's beyond my capabilities.
I think writing simple code for dumping ram into file will be the best and easy way.
Also, there may be some possibility in Rock USB mode, but I don't think anyone has figured it out.