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Altera_Forum
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16 years ago

Burst Reads with NIOS II

I am trying to use the NIOS processor to read some debug data that has been dumped on a Memory Mapped device on the Avalon bus, using burst reads. However, I am stuck in writing the C code. I am not ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Refer to the 'initda' and 'flushda' instrctions.

I think the former invalidates a specific cache line (so the cache won't write it out), and the latter forces the (dirty) cache line to be written.

I can't see the instruction that would marke a cache line 'valid' without doing the associated read.

(I've not actually used any of these instructions....)