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Altera_Forum's avatar
Altera_Forum
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21 years ago

Accessing FPGA RAM section

Dear all, how is it possible to tell the linker to place variables in a RAM that is in the FPGA? I have the following problem: I got a design with 12k RAM on FPGA and in my software projec...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Hi Scott,

thanks for your reply. I checked whether the section is defined as memory region. And this is true:

MEMORY

{

...

int_ram : ORIGIN = 0x00808000, LENGTH = 20480

...

}

SECTIONS

{

...

.int_ram :

{

PROVIDE (_alt_partition_int_ram_start = ABSOLUTE(.));

*(.int_ram)

. = ALIGN(32 / 8);

PROVIDE (_alt_partition_int_ram_end = ABSOLUTE(.));

} > int_ram

...

}

It is very similar to the other memory regions such as SD-RAM and Flash. But I still get the warning that the section int_ram isn't assigned to a memory region.

The linker script belongs to the syslib project. But I am using this special variable in my application. Could this be a problem?

Or is there somewhere a checkbox to be ticked or a setting to be made that I forgot?

Best regards,

nathan