On Tue, 17 Jul 2001, Henry Nelson wrote:

> dmesg shows:
> pciide0 at pci0 dev20 function0: OPTi 82c621 PCI IDE controller (rev. 0x11)
> pciide0: bus-master DMA support present, but unused (couldn't map registers)

This seems to be a problem with the early revisions of the OPTi controller
not being true bus-master devices.

A workaround is in -current but didn't quite make it under the wire before
1.5.1 was frozen. You've just reminded me that I need to submit a pullup
for 1.5.2. ;-)

Cheers, Steve