Lpc2000

At 07:17 PM 12/4/03 +0000, you wrote:
>Hello group,
>
>I am trying to come up with a simple power up sequence
>for my application using IAR. So that I could just FLASH
>application into the part, and run it from RESET. I am
>using NOHAU J-TAG loader.

I don't understand.  Why not just use Philips' download utility?  Also does 
Nohau's utility not deal with this already?


>I just read in the manual "Criterion for the valid user
>code". I am not sure if there is a mechanism in IAR or
>any other existing compiler for LPC2100 to create a valid
>checksum block around interrupt vectors. I could write
>a utility to update target binary file and insert a
>proper checksum there, or write vectors in assembly and use
>jumps to the fixed secondary jump-table to keep values in
>the interrupt area constant, hence, predictable for the local
>checksum.
>
>I just can't believe that things need to be that complex to
>power up an embedded processor and pass control to main().

Considering that the processor has NO hardware protection against 
inadvertent writes into the flash by the application that's a pretty 
minimal check.  Philips' download utility takes care of it automatically.

As far as complex setups go, I've seen a lot worse.


>I would highly appreciate any suggestions how to create
>a FLASH-based power up sequence.

I don't understand.  What is the problem you are having on power up?  And 
what does that have to do with the download?