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Altera_Forum's avatar
Altera_Forum
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20 years ago

Receiving bad data from FIFO with DMA transfer

Hi to everyone, i have some problems with the FIFO and reading DMA transactions. After the transaction, and i dumped the data on the screen. At the very beginning i find some data (2 or w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

> I have some problems with the FIFO and reading DMA transactions.

Have you check for interference with the cache ? (if you have one)

If you have cache on Data, there are precautions to take to ensure the consistency of the external memory.

Hope this helps,

Bert