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Re: Tom's questions for Jaya

Started by Jayasooriah February 24, 2006
Hello lpc2100, I will answer you question assuming it is an open question:

--- In lpc2000@lpc2..., "lpc2100" <lpc2100@...> wrote:
 > Is it possible that you erased the philips bootloader while reverse
 > engineering the bootloader.

It is not possible to erase the boot loader by reading it out.  All my 
reverse engineering was done using the hex file.

 > Can't you revive the dead boards since you
 > have the ability to reprogram the boot sector with your own
 > bootloader.

If the boot loader is dead my loader does not get run.

 > Have you tried to reprogram the chip via JTAG using your
 > own flash programming algorithms?

No.

 > If you can't access those chips via
 > jtag then this would indicate dead parts.

I do not know.  See above.

 > This means that something
 > else went wrong which caused dead parts.

I do not know.  See above.

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An Engineer's Guide to the LPC2100 Series

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

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

Tom