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Altera_Forum
Honored Contributor
16 years agoYou can find some ideas in this document:
http://www.altera.com/literature/hb/nios2/external_processor_if.pdf Basically you need a bridge between your external system and the Avalon bus. This strongly depends on what kind of user interface you have; you could access the onchip memory through spi, then you can use the spi to avalon master bridge which is available in sopc builder standard library.