[s1mp3-dev] Around ICE(2)

[seventh guardian]

On 6/15/06, Legolas <legolas558 at email.it> wrote:
>
> No problem - anyway a ICE/JTAG guru (no, I am not) would be welcome
> since we are proceeding with lead boots - very slow. A point of view
> "from the inside" would help a lot (usually most of people _uses_
> ICE/JTAG, and now we need the experience of somebody who _makes_ ICE/JTAGs)
>
> The possibility of a JTAGICE MK II can be trashed, but I would better
> investigate the fact that this ICE works both for the MCU and for the
> DSP. This should be a clue. Unfortunately I know nothing about DSP ICEs.

Indeed, it should be a clue. There must be a way of having both of
them on the bus wothout interfering. There could be some form of
addressing so that only one of the cores gets the data. This ICE can
be an access point to some internal bus..

I wonder if the player spits out data when playing music with ICEEN
active :S don't know if this is possible though (ICEEN can trigger
some internal state change..) I'm seriously considering building one
of those JD-ICE :)

>
> --
>   Legolas
>
>
> Bluechip ha scritto:
>
> >Again, to state publicly that you [legolas] are the man on this subject.
> >Apologies if my mis-information confused.
> >I have no idea where I got my dellusion from.
> >Know that it is now corrected.
> >
> >;)
> >
> >BC
> >
> >
> >
> >>Not to be pedantic, but "JTAG" is never mentioned and even if modern
> >>ICEs are all JTAGs (with state machine) we think that their ICE is
> >>something slightly different from the standard, Alistair is making some
> >>tests in these days.
> >>
> >>About tests I have done with JohnDoe: see
> >>http://www.s1mp3.org/wiki/index.php/S1ice
> >>
> >>--
> >>  Legolas
> >>
> >>
> >>Bluechip ha scritto:
> >>
> >>
> >>
> >>>>Hi!
> >>>>
> >>>>This is a long shot, but have you tried I2C for the ICE protocol? I
> >>>>mean, if I was to produce a chip specifially with I2C support, I
> >>>>wouldn't double the hardware, so I would use the same hardware for the
> >>>>ICE. Try to read some registers and see what you get back..
> >>>>
> >>>>Cheers!
> >>>> Renato
> >>>>
> >>>>
> >>>>
> >>>>
> >>>Nice thought - but we are 95% certain that there is a JTAG-ICE
> >>>protocol as it is mentioned several times in the hardware docs and we
> >>>have standard JTAG-ICE pins on the chip. :( ...Keep the ideas
> >>>
> >>>
> >>coming though :)
> >>
> >>
> >>>BC
> >>>
> >>>
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> >>>
> >>>
> >>>
> >>>
> >>>
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> >>
> >>
> >
> >
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> >
> >
>
>
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