Ha az OpenOCD egy +-t dob vissza és nem promptot a 3333-as portra telnetelve akkor a hiba nem az Ön készülékében van, hanem a JTAG prompt a 4444-es porton érhető el....
Here are some pics (shot with my Nokia 6230 in VGA res) about the trick:
Thin albanian wires were soldered directly to the pins.
Live together cry together series 100 Ohm level shifter JTAG adapter to LPT port.
I have designed an addon board to expose the CPU's intresting interfaces (2 serial, USB, JTAG)
It is fun to look back to those pictures from now. After 5 years we got to a state when it is easier and cheaper to buy a Rpi to solve the same problem rather than fixing that board...