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

I would use IORD to readback the destination buffer to make sure you are not reading back cached data. Also the transfer length is in bytes so if you want to move 16 bytes worth of data pass in '16' instead of '4' to the rx and tx calls.