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Altera_Forum
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10 years ago

Writing via the Avalon master interface in assembly

What is required when writing to the Avalon master interface instantiated with the Nios, specifically with assembly? I understand that in C, use can use the following macros to read/write to a ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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Those C macros are simply wrappers to provide access to the IO instructions. See the stwio and ldwio descriptions in the instruction set reference.

https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/hb/nios2/n2cpu_nii51017.pdf

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I see. So if my understanding is correct, I will simply want to read and write to the address given to the Avalon master interface in Qsys using the common load/store operations? In doing so, I can initiate Avalon reads and writes?

Thanks.