Charles wrote:

Has anyone ever used this method for field troubleshooting?


How do you propose using the programming interface to troubleshoot
something? Are you going to write custom software and reprogram the
processor? What software and interface do you have, and is it
appropriate for the CPU involved? I programmed various embedded
controller boards for four years with JTAG, but there was no way to
troubleshoot the board from that port. Boundary scan is for testing the
CPU, not the rest of the board.


--
You can't fix stupid. You can't even put a Band-Aid™ on it, because it's
Teflon coated.