Well, after many months of probing and debugging, we've managed to fix =
our DMA problem. And the solution was a very simple one: we were only =
mapping 8MB of PCI to SDRAM, while we had 32MB of ram - so the O/S was =
trying to use all 32MB, even through only 8MB was allocated. Changing =
the allocation to match the amount of SDRAM solved it!

A big thank you to all who helped along the way, especially Philip and =
Manuel.

Cheers
 Bruce