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Altera_Forum's avatar
Altera_Forum
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10 years ago

NIOS with 2Gb SDRAM

Hi all, I have come across some problems using NIOS in my project. here is the background: I have a 2Gb DDR2 for the NIOS to run on. I have build the Qsys and connected all components. but when ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

.text and .exceptions will contain NIOS instructions. Your linker script shows .text being placed into 'data_memory' Shouldn't it be placed in 'direct_window_bridge_0'

edit:

Also, the Qsys warning (at least on 12.1) is:

--- Quote Start ---

Warning: System.nios2_qsys_0: The address range of the slaves connected to the Nios II instruction masters exceeds 28 bits. Attempts to call functions across 28-bit boundaries is not supported by GCC and will result in linker errors.

--- Quote End ---

It isn't saying you can't connect the instruction master to a memory wider than 28 bits. It's saying you can't have instructions located on either side of a 28-bit boundary and expect it to work.

So I think much of your work was not necessary?