| OBIO(4) | Kernel Interfaces Manual (MacPPC) | OBIO(4) | 
NAME
 obio — introduction to Macintosh On-Board IO bus support and drivers
SYNOPSIS
 obio0 at pci? dev ? function ?
DESCRIPTION
 The obio interface serves as an abstraction used by the autoconfiguration system to help find and attach devices (e.g. the Ethernet or disk controllers) connected to the Macintosh onboard I/O bus.
HARDWARE
 NetBSD includes machine-dependent On-Board drivers, sorted by device type and driver name:
SCSI interfaces
- 
esp
- 
NCR 53C9x SCSI interfaces.
- 
mesh
- 
Apple Macintosh Enhanced SCSI Hardware SCSI interfaces.
 
Disk and tape controllers
- 
wdc
- 
Standard IDE/ATAPI type hard drive controllers.
- 
mediabay
- 
Standard IDE/ATAPI type CD-ROM drive controllers in PowerBooks.
 
Network interfaces
- 
bm
- 
Apple BMac ethernet interface.
- 
mc
- 
Apple MACE ethernet interface.
- 
gem
- 
GMAC ethernet interface.
- 
wi
- 
WaveLAN/IEEE and PRISM-II 802.11 wireless interfaces.
 
Serial interfaces
- 
zsc
- 
Zilog 8530 serial communications interfaces.
 
Audio devices
- 
awacs
- 
Apple's ‘audio waveform amplifier and converter for sound' audio device found on most macppc models. May not work on several G4 and iBook models.
 
Miscellaneous devices
- 
adb
- 
Apple Desktop Bus for keyboards, mice, and other input devices.
- 
nvram
- 
Placeholder device for the persistent system settings.
 
 
SEE ALSO
 adb(4), 
autoconf(4), 
awacs(4), 
bm(4), 
esp(4), 
gem(4), 
intro(4), 
mc(4), 
mediabay(4), 
mesh(4), 
wdc(4), 
wi(4), 
zsc(4) 
HISTORY
 obio first appeared in NetBSD 1.2.