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amildm's avatar
amildm
Icon for Contributor rankContributor
3 years ago
Solved

[NIOS] New CPU Memory HEX file -> should all NIOS system be regenerated?

Hello, When the NIOS Memory HEX file is replaced with a new one -> should all NIOS subsystem be regenerated (new RTL file will be created)? Can not I leave the whole NIOS system untouched and jus...
  • RProesel's avatar
    RProesel
    3 years ago

    You do not have to regenerate the NIOS sub-system if you change the .hex file that you are using to initialize the memory.

    You only have to do 2 steps in Quartus:

    1) Run 'Update Memory Initialization File' in the Processing menu.

    2) Run 'Start Assembler' under 'Start' in the Processing menu.

    This will create a new SOF file using the new .HEX file.

EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi,


The Platform Designer have its own interconnection in the background and generate the HDL files based of the design that you have connected in the Platform Designer, thus using different .HEX meaning, different .qsys files generated, different HDL files, which will have issue.


Thus, you need to have it re-generated. To answer your question again, it is due to the memory you mentioned having a connection with the Nios II itself, meaning any connection to the Nios II whatsoever, there will be changes in the hardware thus require a re-generation. Nevertheless, we still recommend user to re-generate whenever there's any hardware changes.