Re: [openwince-list] [JTAG] crash on the bus during CPU-detection

[Guennadi L. <gl...@ds...>]

On Mon, 9 Feb 2004, Marcel Telka wrote:

>
> Napísané dňa 09.02.2004 09:24, (autor: Guennadi Liakhovetski):
> > On Fri, 6 Feb 2004, Marcel Telka wrote:
> > > Please post output from 'detect' command...
> >
> > jtag> detect
> > IR length: 5
> > Chain length: 1
> > Device Id: 01101001001001100100000000010011
> >   Manufacturer: Intel
> >   Part:         PXA250
> >   Stepping:     PXA255A0
> >   Filename:     /usr/local/share/jtag/intel/pxa250/pxa250c0

Ok, the situation is clearer now. There ARE 2 chips in the chain (PXA and
IT8152), but, because the board manufacturers had no information regarding
the IT chip, they instructed us to connect the TDO line ___BETWEEN___ the
2 chips. So, we see only the PXA, _BUT_ the IT gets all the commands we
send to PXA and might react to them too...

Now my question is: Is it possible to work with a chain of 2 devices, of
which 1 is a complete black box? At the moment, latest on detectflash jtag
just segfaults, after printing a few "no active command for part 0" lines.
So, looks like, since we don't know how to set it into the bypass mode, we
can't work with PXA either?

Thanks
Guennadi
---------------------------------
Guennadi Liakhovetski, Ph.D.
DSA Daten- und Systemtechnik GmbH
Pascalstr. 28
D-52076 Aachen
Germany