Honored Contributor
Honored Contributor<div class='quotetop'>QUOTE </div>
--- Quote Start --- I can't log directly to disk, as I am capturing 16-bit samples at 50 Msps. So what I was planning to do was log 10 seconds (~1 gig) worth of data to DRAM using DMA from our custom logic, and then spend 20 minutes or so writing this to a disk using FTP.[/b] --- Quote End --- Since you need a fast access to DDR it would probably be a better solution not to connect it to the Avalon bus, but to use the other interface offered by the Altera DDR IP. Than create a sopc builder component that can be used for Nios read access to the DDR and has a bypass DMA used for high speed write transfers to the DDR. As far as I understand it, you still have some other memory chip on the board that can be used for running Linux. This is not really an easy solution but it might be a good one. IzI
