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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

PIO

Hi all, I'm trying to write/read to and from some PIO. I have read as much as I can find about this topic on the forums and nios wiki but im not having much luck. Ive made a little test pro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

You will need to bypass cache by turning on address bit 31.

writew(0xFFFF,0x10402020 | 0x80000000); //data

- Hippo