SBUS(4)                   OpenBSD Programmer's Manual                  SBUS(4)

NAME
     sbus - introduction to sbus bus support and drivers

SYNOPSIS
     sbus* at mainbus?
     sbus* at iommu?
     sbus* at xbox?

DESCRIPTION
     These sbus attachments are specific to the sparc and sparc64 ports.

     sbus is an I/O interconnect bus mostly found in SPARC workstations and
     small to medium server class systems.  It supports both on-board periph-
     erals and extension boards.  The sbus specifications define the bus pro-
     tocol as well as the electrical and mechanical properties of the exten-
     sion slots.

HARDWARE
     OpenBSD includes the following sbus drivers, sorted by device type and
     driver name:

   Audio interfaces
        audioamd(4)    AMD 7990 codecs.
        audiocs(4)     Crystal Semiconductor CS4231A codecs.

   SCSI interfaces
        esp(4)         NCR53c94 and compatible SCSI interfaces.
        isp(4)         Qlogic SCSI interfaces.

   Network interfaces
        be(4)          ``Big Mac'' Ethernet board.
        hme(4)         ``Happy Meal'' Ethernet interfaces.
        le(4)          Lance 7990 series Ethernet interfaces.
        lebuffer(4), ledma(4)
                       Lance 7990 series Ethernet DMA interfaces.
        qe(4)          Quad Ethernet Controller board.

   Bridges
        stp(4)         sbus pcmcia(4) bridge.

   Graphics devices
        agten(4)       Fujitsu AG-10e accelerated 24-bit color frame buffer.
        bwtwo(4)       Monochromatic frame buffer.
        cgfourteen(4)  Accelerated 8/24-bit color frame buffer.
        cgsix(4)       Accelerated 8-bit color frame buffer.
        cgthree(4)     8-bit color frame buffer.
        cgtwelve(4)    Accelerated 24-bit color frame buffer.
        mgx(4)         SMS MGX and MGXPlus accelerated 24-bit color frame
                       buffers.
        pninek(4)      Weitek Power9000 frame buffer found on Tadpole SPARC-
                       book 3.
        pnozz(4)       Weitek Power9100 frame buffer found on Tadpole SPARC-
                       book 3GS, 3GX, 3TX and 3XP.
        rfx(4)         Vitec/Connectware/AP&D RasterFlex framebuffer series.
        tcx(4)         Accelerated 8/24-bit color frame buffer.
        tvtwo(4)       Accelerated 24-bit color frame buffer.
        vigra(4)       8-bit SBus color frame buffer with VGA-compatible
                       modes.
        zx(4)          Accelerated 24-bit color frame buffer.

   Serial and parallel interfaces
        apio(4)        Aurora Technologies pio1 parallel port card.
        asio(4)        Aurora Technologies pio2 serial port card.
        bpp(4)         Parallel port.
        magma(4)       Magma LC series Serial/Parallel Interface cards.
        spif(4)        Sun Serial/Parallel Interface card.

   Miscellaneous devices
        auxio(4)       Miscellaneous I/O controls.
        presto(4)      Prestoserve battery-backed memory.
        uperf(4)       Performance counters on the host bridge.

SEE ALSO
     agten(4), apio(4), asio(4), audioamd(4), audiocs(4), auxio(4), be(4),
     bpp(4), bwtwo(4), cgfourteen(4), cgsix(4), cgthree(4), cgtwelve(4),
     esp(4), hme(4), intro(4), isp(4), le(4), lebuffer(4), ledma(4), magma(4),
     mgx(4), pnozz(4), presto(4), qe(4), qec(4), rfx(4), spif(4), stp(4),
     tcx(4), tvtwo(4), uperf(4), vigra(4), xbox(4), zx(4)

HISTORY
     The machine-independent sbus subsystem appeared in NetBSD 1.3.  OpenBSD
     support first appeared in OpenBSD 2.0.

OpenBSD 3.5                    February 29, 2004                             2
