Forum Discussion

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

Serious Problem with DMA transfer.

Guys, I have a desperate problem on my hand. Using DMA to do burst transfers from DDR to on-chip RAM. Using the reference code as shown below. Searched all the forums and confirmed people using th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

alt_uncached_malloc() gives you an address that is uncached, it doesn't stop other data items sharing the cache line, nor invalidate/flush that part of the data cache.

This may, or may not, be your problem ...