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Altera_Forum
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21 years ago

Does alt_dcache_flush_all() work right?

Hi: I want to flush all dcache of niosII/f core, I find a function in kitsv1.1\nios2\components\altera_nios2\HAL\src\alt_dcache_flush_all.c , but I wonder if it is correct. the function is li...
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Altera_Forum
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21 years ago

Yes, this is correct.

The Nios II FLUSHD instruction ignores the tag portion of the memory address (the top bits).

This means that a FLUSHD to address 0x0000 is the same as a FLUSHD to address 0x1000, 0x2000, 0x3000, etc. for a 4096 byte D-cache.

+james+