udma66 controller changed devices

[Robert Williams <bob bob usuhs mil>]

I inserted a HPT366 UDMA controller into my UP1000
with no disks attached and the system
could not boot to completion.
The boot loader (apb) found and loaded up1000.pal
and vmlinux.gz on /dev/hda1, but then the system appears to
have switched the ide devices.
The onboard ide devices 0 and 1 became 2 and 3,
(the names of my disks became hde, hdf, and hdg).
CONFIG_BLK_DEV_OFFBOARD was not set.
Where normally I would boot to root on /dev/hda5,
the system was trying to mount /dev/hde5.

This looks like buggy behavior.
Does anyone here know what the problem might be?

--
Bob Williams, http://bob.usuhs.mil/
office: 301-295-3568