NetBSD includes machine-dependent On-Board drivers, sorted by device type and driver name:
SCSI interfaces
esp
NCR 53C9x SCSI interfaces.
ncrscsi
NCR 5380 SCSI interface.
Disk and tape controllers
iwm
Integrated Woz Machine - Sony based floppy drives.
wdc
Standard IDE/ATAPI type hard drive controllers.
Network interfaces
mc
Apple MACE ethernet interface.
sn
Sonic (DP83932, DP83916) based ethernet interfaces.
Serial interfaces
zsc
Zilog 8530 serial communications interfaces.
Audio devices
asc
Apple Sound Chip as found on 68k based Macintosh computers.
Miscellaneous devices
adb
Apple Desktop Bus for keyboards, mice, and other input devices.
intvid
Internal video hardware.