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Altera_Forum's avatar
Altera_Forum
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14 years ago

Cache Implmentation

Hi All, I'm working on a research project involving NiosII processor. We need to be able to control cache bypass signal. Can any of you guide me how to do that? I need to instantiate the Nios...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

The only time any modern cpu is usually run with the instruction cache disabled is immediately after reset. There is usually no reason to turn it off!

Special consideration has to be made for self modifying code (etc).

You can certainly run a 68020 with its I-cache disabled! and probably some of the ARM cores. Any x86 chip - especially in 'real' mode.

But since disabling the I-cache kills performance, the first thing anyone does is enable it!