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Altera_Forum
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15 years ago

Accessing Custom Components in Nios

Hey guys, I've made a custom component to interface between Nios and some verilog. I've attached a screenshot of the signals. If a FIFO megafunction from 9.1 (because FIFO makes 10.1 and...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Nios II only can access memory mapped slave *interfaces* not the signals that make up the interface. To access this FIFO you probably should include "io.h" and use one of the IORD macros defined in it. Searching for "io.h" or "IORD" in the Nios II software handbook for more details. These macros perform cache bypassing read accesses to whatever address you pass into it.