INTRO(4)             OpenBSD Programmer's Manual (Mac68K)             INTRO(4)

NAME
     intro - introduction to special files and hardware support

DESCRIPTION
     The manual pages in section 4 describe the special files, related driver
     functions, and networking support available in the system.  In this part
     of the manual, the SYNOPSIS section of each configurable device gives a
     sample specification for use in constructing a system description for the
     config(8) program.  The DIAGNOSTICS section lists messages which may ap-
     pear on the console and/or in the system error log /var/log/messages due
     to errors in device operation; see syslogd(8) for more information.

     This section contains both devices which may be configured into the sys-
     tem and network related information.  The networking support is intro-
     duced in netintro(4).

DEVICE SUPPORT
     This section describes the hardware supported on the Mac.  Software sup-
     port for these devices comes in two forms.  A hardware device may be sup-
     ported with a character or block device driver, or it may be used within
     the networking subsystem and have a network interface driver.  Block and
     character devices are accessed through files in the file system of a spe-
     cial type; see mknod(8).  Network interfaces are indirectly accessed
     through the interprocess communication facilities provided by the system;
     see socket(2).

     A hardware device is identified to the system at configuration time and
     the appropriate device or network interface driver is then compiled into
     the system.  When the resultant system is booted, the autoconfiguration
     facilities in the system probe for the device and, if found, enable the
     software support for it.  If a device does not respond at autoconfigura-
     tion time it is not accessible at any time afterwards.  To enable a de-
     vice which did not autoconfigure, the system will have to be rebooted.

     The autoconfiguration system is described in autoconf(4).  A list of the
     supported devices is given below.

LIST OF DEVICES
     The devices listed below are supported in this incarnation of the system.
     Pseudo-devices are not listed.  Devices are indicated by their functional
     interface.  Not all supported devices are listed.

           adb(4)      Apple Desktop Bus driver
           ae(4)       DP8390-based NuBus Ethernet device
           akbd(4)     Apple Keyboard Device
           ams(4)      Apple Mouse Support
           asc(4)      Apple Sound Chip on-board audio device
           esp(4)      ESP NCR 53c96 on-board SCSI interface
           macfb(4)    Macintosh frame buffers
           mc(4)       Am79C940 (MACE) on-board Ethernet device
           ncrscsi(4)  NCR 5380 on-board SCSI interface
           sbc(4)      NCR 5380 on-board SCSI interface
           sm(4)       SMC91C9x and SMC91C1xx-based 10/100 Ethernet device
           sn(4)       SONIC-based Ethernet device
           zsc(4)      Zilog 8530 (ZSCC) serial communications driver

SEE ALSO
     autoconf(4), config(8)

HISTORY
     The Mac68k intro first appeared in NetBSD 1.2.

OpenBSD 4.7                      June 21, 2007                               1
