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Altera_Forum
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10 years ago

Addressing unmapped memory space results in unpredictable behavior

Hi folks, Searching for a stubborn error, I came across the following behavior: When an avalon memory mapped master (for example NIOS) writes to an address, that is not mapped to any qsys ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

In my case I needed to find out what was accessing invalid addresses. I had my ISR read several registers in the master devices which were later printed to the console. It helped me discover which master was generating bad writes.