Hi Thomas, sorry for the late reply. The above is a part of my simple test application for an API. I need to write data 64/32 bit as per the 64/32 bit system to test the APIs . So assigning as above.#ifdef CONFIG_64 *(SysAddr + num_items) = (0xaa55aa55aa000000 + num_items); #else *(SysAddr + num_items) = (0x11220000 + (num_items)); #endif If it is 64 but system i should assign 64 bit or else 32 bit data. Can i have any other option/method ?If you need to do that, it's almost certain that something's wrong with your code. You should not need to do that. Thanks Sudheer |