Scattered DMA controller 8.0

Hello all, Hope some one can help me.

I am trying to use the scattered DMA controller and , as not very good in C, I seem to be having some problems.

I initially downloaded the SGDMA Example posted on alteras website, which I was able to successfully implement. After that I tried to edit the Nios code to add multiple descriptors to my DMA controller but had no luck at all in getting it to work

Basically I need my DMA Controller to first send 10 words of data with start and stop signals.

Then send a video packet with start and signals. I need this too be done continue sly until told to stop.

I have got the system to work with one Descriptor but don't know how to make two descriptors and initialize them to continuously run.

I was hoping some one could give me an example.

Hope to hear from some on soon

regards