Maybe I've bitten off more than I can chew. But I'm always doing that and have lived to tell many tales. So I proceed. :)
I've been asked to look at developing new s/w for a brand new rtd1262-based box (no brand names!) and have been looking at it for a few weeks now. Finally starting to gain a bit of traction.
After looking at the "install" procedure, I'm now concentrating on the Realtek "BIOS" to see how to dump in a new linux kernel, and maybe a jffs2 root instead of the squashfs non-writable thing that's in there now.
And after that little job I'll have to start seriously looking at decrypting key parts of the DvdPlayer app. With 2.6 million lines of MIPS assembler, I'm calling on AI help to sort out what was part of the C library or other "uninteresting" stuff (since the thing was statically linked and then had all symbols and debug stuff removed), and what actually makes the thing go.
So far the "strings" extracted show quite a bit is done using the old Linux standby of calls to system("…"). :)
If anyone is playing with or interested in a similar box, feel free to contact me either here or on the email.