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Altera_Forum's avatar
Altera_Forum
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20 years ago

What is the problem about "Varify failed"

Hi, I'm new here. I'm learning about Nios II IDE and follwing the instruction. I have done SOPC Builder, compile, programme, create and build the software 'Hello World!' without any p...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

The nios2-download tool writes its input data into memory and then reads it back. This message means that the data read back did not match what was written.

In your case the memory location which failed to verify is somewhere in the 64k block starting at address 0x00000000. You should check the hardware for that memory to ensure it is correctly set up (right number of wait states, not a ROM or FLASH, etc).