Lpc2000

> I guess this kind of protection is quite useless, perhaphs this is 
> why Philips doen't disclosure the JTAG direct access to Flash 
> read/write routines, but it's pretty simple to disassemble IAP 
> bootloader (I've read somewhere on Russian ARM forum that there are 
> few peoples who are doing this) and to have direct access to Flash 
> through JTAG instead through IAP
> I even read on the same Russian forum that one guy sucessfully 
> overwrote (by mistake) bootloader Flash when tried to write huge 
file 
> through the Philips ISP, thus made the chip absolutely useless 
> without the bootloader code inside.

I had tried to overwrite the bootloader by programming a big file. 
Nothing happened. All I got was a warning from the Philips ISP tool 
about file being bigger than the Flash. I had experimented with the 
different file sizes but the bootloader was never overwritten. Can 
you please dig some more information from the Russian forum.

I won't discount the code read protection feature just because of 
some rumors. I would like to get my hands dirty with a chip and do 
more expriments to assess how difficult/expensive it is to break the 
protection.

Regards
Tom