--- Quote Start ---
I can read the sd card, but I have a problem writing to the sdram.
--- Quote End ---
What's exactly the problem?
You have pt_sdram, then you can simply write or memcpy at that address.
--- Quote Start ---
my boot he resides in sdram ..
--- Quote End ---
What do you mean with this?
The bootloader can't reside in sdram, because it is supposed to be already there when fpga gets configured.
So, it must be in the initialization file of any onchip memory. And nios reset vector must be set to point here.
--- Quote Start ---
i don't understand how to set the linker from bsp editor..
--- Quote End ---
--- Quote End ---
Open bsp editor and in the linker section set sdram to all code and data sections
Honored Contributor
