How to increase DMA fifo depth?

Ok, I solved this.

I manually editted the .ptf file for my SOPC system and in the WIZARD_SCRIPT_ARGUMENTS section for the DMA module in question I added the following line

fifo_depth = "5";

This got rid of all errors! Awesome!

The default fifo_depth is 2, raising it to 5 gave the DMA engine enough timing leeway to work with the sdram.

This is pretty cool. It means on avg. I'm dma'ing one 32 word into sdram every 26ns.

I'm going to to some more testing on more loaded system and see if 5 is enough or if I need to increase it more.

Ken