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Altera_Forum's avatar
Altera_Forum
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16 years ago

Changing the Size of Data and Instruction Cache

Hello again, I am trying to increase the data and instruction cache to test if the speed increases when reading data from the UART. At first, I tried making it four times bigger, Quartus said ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Maybe I've got it... After you build the new hardware image are you loading it into the board?

vendor_hwselect tells the kernel build which hardware to target but it does not put the hardware into your DE2 board.

you would need to run nios2-configure-sof or something to get the new image into the board. If you are not doing this, the kernel would think it had more cache than the HW actually has.

That could be an issue :).

Also, you probably don't need to do this but I always make clean when I'm changing hardware.

Hope this helps.