Hi,

just a quick thought:

When was DMA for the Cumana and Powertec drivers tested last?
I mean several changes were made recently, especially the bugfix to the
interrupt system, so couldn't it be that DMA is working now but nobody has
noticed yet?
I'd like to test it (especially as I'm currently making a fresh backup of my
harddisk, both RISC OS and RiscBSD so I could even cope with my harddisk
getting corrupted) but this means somebody from the kernel team would have to
compile a kernel with DMA for the Cumana driver enabled.

Yours, Markus