Lpc2000

Hello John,

Sorry if I misinterpreted what you wanted to claim with "fact 2", but I'm 
still having trouble understanding what you mean. Actually, both 1 and 2 seem 
a bit confusing, just as the first paragraph of your last posting. I'm not 
sure if you really understood everything as well as you believe.

Enabling/disabling JTAG and debug (these two are the same) is done by way of 
PINSEL2, which decides if the corresponding pins are used as JTAG or GPIO. 
You say you didn't want to state that CRP enables/disables JTAG, but that's 
just what it does.
Not the bus signals are being blocked, but the JTAG signals - the manual says 
that internal multiplexers decide to which peripherals the pins are routed, 
depending on the PINSEL registers.

I didn't reply to this discussion for several weeks, after it became obvious 
to me that CRP works as long as the bootloader is reasonably free of bugs. 
Even if such a bug exists, it can be easily fixed by Philips, so this isn't 
criticial.

It was quite easy for me to ignore these threads, and look for other 
interesting stuff on this list - I don't understand why others just can't do 
the same, but insist on requesting this to be stopped. The recent amount of 
"please stop" postings is just as annoying as the continued discussion of the 
matter itself.

Regards,

Dominic

On Tuesday 28 February 2006 19:01, John Heenan wrote:
> No Dominic. My facts are not wrong. Below is what I stated and what
> Jaya replied. I asserted in Fact 2 that CRP decides if signals from
> JTAG will be allowed to act. This assumes JTAG is enabled and
> attempting to pass signals. Surely this is clear. I did not state
> signals to JTAG (from a debugger for example), I stated signals from
> JTAG, which in the context of Fact 1 clearly means bus signals.
>
> I never stated CRP enables or disables JTAG. JTAG electronics
> operates independently. JTAG can be enabled and spinning uselessly
> because CRP has not enabled Debug.
>
> I will not accept my comments are unfair. If someone posts to a group
> and imply a level of knowledge they do not possess then it is
> appropriate and fair to point this out. If you regard it a personal
> attack, that is not my problem, it still does not mean the comments
> are inappropriate.
>
> I have no intention of giving lessons in basic electronics. Yes I am
> aware you have put on the web a rather lengthy document concerned
> with JTAG.
>
> I personally am really fed up the damaging effects of the poor level
> of insight of self proclaimed experts.
>
> John Heenan