September 21, 2003 OBIO 4 mac68k

### NAME

obio - introduction to Macintosh On-Board IO bus support and drivers

### SYNOPSIS

obio0 at mainbus?

### 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.

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.

### SEE ALSO

adb(4), asc(4), autoconf(4), esp(4), intro(4), intvid(4), iwm(4), mc(4), ncrscsi(4), sn(4), wdc(4), zsc(4)

### HISTORY

obio first appeared in NetBSD1.2.