MK6 Debug port?

[ninjanick]

From the MK6 service manual:

10.4.17 In-Circuit Emulator (Not fitted)
To meet the requirements of jurisdictional authorities and to assist programmers in debugging tasks, an In-Circuit Emulator (ICE) facility is provided to enable the visibility and control of the SH−4 processor resources, such as registers and memory contents. The ICE functions are established when the JTAG connector, a 14-way DIL header, is fitted to J8.
The connector is compatible with the Hitachi User Debug Interface (Hitachi−UDI) and provides an interface that conforms to JTAG, IEEE 1149.1 and the IEEE Standard Test Access Port and Boundary-Scan Architecture. The SH−4 (Model SH7750) Hitachi−UDI does not support boundary-scan but does enable emulator connection. The Hitachi−UDI uses six pins to provide the serial transfer protocol conforming to the JTAG specification − TCK, TMS, TD, TDO, TRST, ASEBRK/BRKACK.

Just out of curiosity, has anyone tried playing with this?