Front and back
Its yet another board that I've got from polprog
So ive found uart-rs232 converter on board and hooked into it. After some trying with baud speeds ive managed to connect to it, and it dumped boot and worked as tty.
As dumping rom via 9600 baud serial would take too long ive hooked up ethernet to it and dumped everything via ftp. It has some weird flavour of linux on it, probably something fully custom.