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

NAME
     intro - introduction to special files and hardware support

DESCRIPTION
     This section describes 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 specifi-
     cation for use in constructing a system description for the config(8)
     program.  The DIAGNOSTICS section lists messages which may appear 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 SPARC platform.
     Software support for these devices comes in two forms.  A hardware device
     may be supported with a character or block device driver, or it may be
     used within the networking subsystem and have a network interface driver.
     Character and block devices are accessed through files in the file system
     of a special type; see mknod(8). Network interfaces are indirectly ac-
     cessed 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 must be rebooted.

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

SEE ALSO
     autoconf(4), config(8)

SUPPORTED SYSTEMS
     The following Sun SPARC system architectures and models are supported:

     sun4     first generation SPARC systems on VMEbus:
              Sun 4/100 series (14.28 MHz)
              Sun 4/200 series (16.67 MHz)
              Sun 4/300 series (25 MHz)

     sun4c    desktop SPARC systems with SBus:
              SPARCstation 1 (20 MHz)
              SPARCstation 1+ (25 MHz)
              SPARCstation 2 (40 MHz)
              SPARCstation SLC (20 MHz)
              SPARCstation ELC (33 MHz)
              SPARCstation IPC (25 MHz)
              SPARCstation IPX (40 MHz).

     sun4m    desktop SPARC systems with Mbus for CPUs, and SBus:
              SPARC Classic (50 Mhz microSPARC I)
              SPARC LX (50 MHz microSPARC I)
              SPARCstation 4 (70 Mhz microSPARC II)
              SPARCstation 5 (70, 85, 110 MHz microSPARC II)
              SPARCstation 5 (170 MHz TurboSPARC)
              SPARCstation 10M (36 MHz SuperSPARC I)
              SPARCstation 20M (50 MHz SuperSPARC I)
              SPARCstation 10 (Mbus modules)
              SPARCstation 20 (Mbus modules)
              Tadpole SPARCbook 3GS
              Tadpole SPARCbook 3GX

     The SPARCstation 2 and IPX can be upgraded with a Weitek PowerUP CPU that
     is clock-doubled (i.e. internally it runs at 80 MHz).  OpenBSD supports
     this configuration.

     Hardware level clones of these systems from other manufacturers will
     likely work (e.g. Force, Xerox, Tatung, Axil, Cycle); other systems which
     have a SPARC CPU but do not use Sun's hardware architecture (e.g. Sol-
     bourne) will likely not work.

     The Sun 4/400 series, sun4d (SPARC Center 1000, 1000E, and 2000), and
     sun4u (UltraSPARC) architectures are not yet supported.

     The sun4m architecture with Mbus modules for the CPUs is supported with
     the following modules with only one CPU:

     SM41     40 Mhz SuperSPARC I with 1MB SuperCACHE

     SM51     50 Mhz SuperSPARC I with 1MB SuperCACHE

     SM61     60 Mhz SuperSPARC I with 1MB SuperCACHE

     SM71     75 Mhz SuperSPARC II with 1MB SuperCACHE

     SM81     85 Mhz SuperSPARC II with 1MB SuperCACHE

     SM100    Dual 40Mhz Cypress CY7C605/601 (only one processor will be used)

     OpenBSD does not yet support multiprocessor systems and does not support
     ROSS HyperSPARC Mbus modules.

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

     audioamd     AMD 79C30 obio (sun4c and SPARC Classic) audio controller

     audiocs      CS4231 based audio found in some sun4c and sun4m models

     be           10BaseT/100BaseTX SBus Ethernet controller

     bwtwo        black and white obio frame buffer

     cgeight      24 bit VMEbus color frame buffer

     cgfour       8 bit obio (sun4 P4 bus) color graphics frame buffer

     cgfourteen   24 bit SBus color frame buffer

     cgsix        8 bit obio (sun4c & sun4m), SBus color graphics frame buffer

     cgthree      8 bit VMEbus, SBus, and obio (sun4m) color graphics frame
                  buffer

     cgtwo        8 bit VMEbus color frame buffer

     eeprom       Sun non-volatile configuration RAM driver

     esp          NCR53C90 ESP100 (Sun 4/300),
                  ESP100A (sun4c),
                  ESP200 (sun4m) SCSI controller,
                  FSBE/S (X1053A, part # 501-2015) Fast SCSI-2/Buffered Ether-
                  net SBus controller

     fd           Intel 82072 obio (sun4c) or Intel 82077 obio (sun4m) floppy
                  disk drive controller

     fga          Force FGA5000 SBus/VME bridge

     hme          SBus HME Ethernet controllers (SunSwift)

     ie           Intel 82586 Ethernet controller (Sun 4/100)

     isp          Qlogic ISP SBus SCSI controller

     kbd          Sun type 2, type 3, type 4, and type 5 keyboards (on zs)

     le/lebuffer  AMD 7990 LANCE ethernet controller (Sun 4/200, 4/300, sun4c,
                  sun4m, SBus)

     led          diagnostic LED display on sun4 and sun4m (4/600) machines

     magma        Magma serial/parallel communication boards

     ms           Sun mouse (on zs)

     openprom     Sun Open boot PROM (what became IEEE 1275) configuration
                  driver

     pnozz        Weitek Power9100 frame buffer found on Tadpole SPARCbook 3GS
                  and 3GX

     qe           Quad 10BaseT SBus Ethernet controller

     qec          Supported as a carrier for the be or qe Ethernet con-
                  trollers.

     qfe          SBus QuadFastEthernet controllers

     si           NCR5380 "SCSI-2" VMEbus (Sun 4/200, Sun 4/400) SCSI con-
                  troller

     sw           NCR5380 obio (Sun 4/100) "SCSI Wierd" SCSI controller

     tctrl        Tadpole microcontroller interface

     tcx          8 or 24 bit SBus color graphics frame buffer

     xbox         SBus Expansion Subsystem

     xd           Xylogics 753/7053 VMEbus SMD disk controller

     xy           Xylogics 450/451 VMEbus SMD disk controller

     zs           Zilog 8530 serial controller

UNSUPPORTED DEVICES
     The following devices are not supported, due to unavailability of either
     documentation or sample hardware:

     bpp         Bi-directional Parallel port

     dbri        Dual Basic Rate Interface (BRI) ISDN (SPARC LX & SPARCstation


                 10)

     audio       sun4m audio that is dependent on the dbri

     power       sun4m power management is recognized but unused

     fas         SBus wide ESP scsi controller

     antares     SBus Antares serial board

     hypersparc  ROSS Mbus HyperSPARC modules

HISTORY
     The sparc intro first appeared with OpenBSD 2.3.

OpenBSD 2.9                     August 13, 1997                              4
