Dear Abhishek,
If you have order VID471 with a Vxworks BSP, then you might still be under warranty. If you have purchased a VID471 with default BSP (Windows), you can get support for Windows.
The endianness macro are there but the code was never verified on PowerPC. Fact is the Vxbus is already doing most of the endian conversion but still other places need to be asserted. We have not been doing that ourselves, we do have two customers who modified our BSP to PowerPC without asking any questions and they are happy with it.
I am not here to assert deliveries, pos, and sales but really technical support. I can tell you that the Vxworks BSP does not run as is on PowerPC. The ADC250 application will also need to be changed. Same for the VID471, I am not sure if we even have done VID471 on Vxworks, I assume not.
Best Regards,
Arnaud