Lpc2000

Tom, what you say does not appear to add up:

>Message: 12
>    Date: Fri, 24 Feb 2006 17:06:25 -0000
>    From: "lpc2100" <lpc2100@...>
>Subject: Re: Tom's questions for Jaya
>
> > It is not possible to erase the boot loader by reading it out.  All my
> > reverse engineering was done using the hex file.
>
>Reverse engineering can also mean verifying your findings.

All my reverse engineering was done using the hex file.  (I can point you 
to the URL if you like to know more...)

As I explained, my findings during in FTL testing are that IAP calls failed 
and did not return.  Anyone who knows about FTL would immediately recognise 
how good FTL is in flushing out flash memory reliability problems.

I was also reminded that Philips took set an entire section to explain 
ECC  alludes one to problems with flash reliability.

While the ECC section appears to be a spin doctoring (reporting a bug as a 
feature) of defects in the ECC implementation, the fact that ECC is 
required IMO is there are flash reliability problems.

I have never previously worked with flash memories for which I could not 
take advantage of their NOR or NAND properties.

Philips most recently has given a further indication of this by stating 
"the bootloader is unlikely to get erased or corrupted during IAP call even 
if wrong frequency is used."

This begs the question: what does happen then?

>What if you
>erased the philips bootloader while developing your own.

My boot loader (in the context of the FTL problem I reported) is no more 
than an application run by the Philips boot loader and which sits in sector 
0.  It does not have any flashing capability whatsoever.

It does not speak well of the LPC if the boot sector can be destroyed in 
the process of developing an "application", albeit this application serves 
to load Intel-Hex formatted files into RAM, not flash.

>Anyway I can rest easy and hope other IAP users too. It is safe to
>make IAP calls.

I have no objections to you resting easy, but advising other uses IMO does 
not make sense.  What is your justification for refuting my evidence?

Jaya 

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