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Altera_Forum's avatar
Altera_Forum
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21 years ago

NIOS II HAL question on memory size

Looking in system.h, I see the define for SDRAM_BASE. There is no define, tho, for the size of SDRAM. In the old excalibur.h, there was a define for the base, end, and size. There used to be a nasys_data_mem_size also. How can I programmatically find the size of the SDRAM?

thanx

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    Hello,

    look at the linker file. There are symbols for the beginning and end of each memory block in your system.

    Dirk
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    Thanks for the info, but I am a little lost. I cannot get my application I am porting from Nios to Nios II to build because all the changes. What is the extension of the linker file (.lnk?)? If it will not build, will it create the linker file?

    thanx
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    The linker file is autogenerated, you can find it in the syslib dirs (AFAIR it's called generated.x). You can access these symbols from your code.

    Dirk