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.

September 21, 2003 | NetBSD 6.0