Someone was asking about this: (Gathered from http://auric.debian.org/~aph/bf/2.2.15/README.txt )
The flavors available for this architecture are `compact', 'idepci', and `udma66'. compact .... A Linux kernel with some non-critical device drivers removed, and a few of the more common PCI device drivers compiled into the kernel itself. See images-1.44/compact/README.txt idepci .... Similar to compact, but even more PCI device drivers are compiled into the kernel, and SCSI is removed. See images-1.44/idepci/README.txt udma66 ..... Specialized kernel for those who require the UDMA66 IDE patch. This may be needed if you have a Promise Ultra66 IDE controller, among others. See images-1.44/udma66/README.txt