Lpc2000

I think anyone reading the message below, and in particular the 
statement "....there are flash reliability problems", needs to ask 
themselves what hard evidence is being produced for the claim.

I just raise this as a question: I've no intention of getting sucked 
into yet another discussion on whether particular problems exist or 
not.

Brendan

--- In lpc2000@yahoogroups.com, Jayasooriah <jayasooriah@...> wrote:
>
> 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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