On Wed, Jul 18, 2012 at 2:47 PM, Andreas Färber <[email protected]> wrote:
> Hello,
>
> Am 18.07.2012 01:22, schrieb Michel Catudal:
>> Le 17/07/2012 07:23, Marek Szczypta a écrit :
>>> I'm very interested in running  openOCD Debugger with NEC V850 . Please 
>>> tell me is it somebody willing to make this implementation ( of course not 
>>> for free :) )
>>
>> I would if I had documentation on their debugging protocol. Do you have any 
>> info on Minicube 2? I haven't found anything on it except programs to run it 
>> under windows.
>
> See my WIP repository https://github.com/afaerber/v850j
>
> They use a rather well documented, sane serial protocol - unfortunately
> I had a logic error in my try-out tool (review what it does before
> attempting to run it!) that set the security bits wrong, screwing my
> V850ES/Jx3-L stick, so that only RL78 support is still being worked on.
>
> The information I collected from public PDF documents on renesas.eu; I
> can check which ones if you want.

That is the flash protocol used by the ROM monitor. It's not usable
for debugging. The debug interface is a JTAG-like interface using
other pins. That protocol documentation is not publicly available and
is unlikely to be disclosed. The only option is reverse engineering. I
had plans on giving it a try, but never got around to it. And since
then we've stopped using the V850 for new projects due to cost,
performance and lousy support from NEC.

/Andreas

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