[ECOS] IXP425 Big Endian Mode

Sujoy Ray raysujoy@yahoo.com
Mon Sep 19 04:31:00 GMT 2005

Hello ALL,
Let me thank you all for the suggestion I received on
this topic. After my hectic office schedule, I managed
to devote some time on the issue and finally I could
find the answer. I thought to share my finding with
this message board for future developers who might
have the same confusion as I had. Here are the

1) IXP425 core always boots in Little endian mode
only. If we choose Big endian mode during compilation,
we need to SWAP the bytes during program
download/flashing so that the XSCALE core can always
see the code in little endian only.

2) BIG endian mode is only related to data storage.
So, if enabled processor will read/write the data in
Big endian mode.

3) Code execution always in little endian mode only.

Any thoughts will be highly appreciated.

Thanks and regards,
Sujoy Ray.

Yahoo! Mail - PC Magazine Editors' Choice 2005 

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