The problem is that the standard SBC kernels for mac68k will use PDMA for
reading/writing to hdd and Powerbooks need either SBC_INTR flag 0x2 added to
sbc* in there kernel config or to use the slower polled mode.
Many improvents were made in NetBSD-11 for Powerbook 1xx machines. (Audio
recording/playback/ Battery montoring via envsys/ Screen brightness control
support and DaynaPORT network suppot which works great with the bluescsi v2
and similar or PiSCSI/rascsi).
There were also changes to sbc in particular setting the right and faster
default for scsi transfers on the PB 1xx and better handing of aborting
transfers which is need for the dse(4) daynaPORT driver as it only works with
polled scsi transfers.
Not sure if all of these changes made it into -11 but are definately in -
current if you use a kernel from one of the daily builds it will work great.(...)