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Hi Paul,
I will reply AGAIN, as it seems you havent received my previous reply.
Paul Fernquist escreveu:
> If there is no interest this time I will assume JTAG has been tried and
> doesn't work or there is no interest is setting up a JTAG emulator where
> you can step through ARM instructions.
Yes, there is interest on getting JTAG working on the EZX phones. My
interest is mainly to be able to revive bricked phones and to do some
bootloader hacking safely. :)
Stefan and Daniel (not me) have tried to get JTAG running, but AFAIK
they didnt succeed.
> There is a possibility that Motorola locked out the JTAG emulation
> instructions by CPU fuse or on board jumper and I don't want to waste
> time if JTAG has been tried and failed.
I dont think that Moto did this for the EZX platform. On A1200 i know
that there is a debug connector with JTAG and serial console. On
a780/e680 there are pads on the PCB. By the way, which phone do you own?
> My curiousity stems from the fact that I have used JTAG for years a
> while back in board test and I was also was the designer of a lot of the
> JTAG logic inside another CPU.
Great, we can certainly use your experience if you are interested in
contributing to OpenEZX. Thanks!
If you have any question, or need help to locate the jtag pads on the
pcb let me know.
- --
Daniel Ribeiro
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