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Altera_Forum's avatar
Altera_Forum
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21 years ago

ROM initialisation

Hello, I created a SOPC-builder module with an on-chip ROM component. This ROM should be instantiated with the content of on_chip_rom.hex, that is in the Quartus directory and contains just 0...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

You have to make sure the boot address in SOPC builder is that specific onchip memory. That hex file is probably wiped clean on purpose (since you are not targetting it, the compiler gives you a clean slate).

In the system library select that onchip memory, compile your software, then compile your hardware in quartus. Another thing to keep in mind is depending on the memory you selected (512, M4k, MRAM) you may have different options available (or lack of options). If my memory is correct, to have pre-populated onchip RAM you can't use MRAM (but I think it's ok with onchip ROM in MRAM but don't quote me on that one). If that's an issue for you take a look at the Tri memory document up on the Altera site.