.\"	$OpenBSD: sbus.4,v 1.13 2003/06/11 16:10:03 deraadt Exp $
.\"	$NetBSD: sbus.4,v 1.5 2002/01/21 17:54:10 wiz Exp $
.\"
.\" Copyright (c) 2001 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Paul Kranenburg.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"        This product includes software developed by the NetBSD
.\"        Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\"    contributors may be used to endorse or promote products derived
.\"    from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\"
.Dd May 27, 2001
.Dt SBUS 4
.Os
.Sh NAME
.Nm sbus
.Nd introduction to machine-independent sbus bus support and drivers
.Sh SYNOPSIS
.Cd "sbus* at mainbus?"
.Cd "sbus* at iommu?"
.Cd "sbus* at xbox?"
.Pp
These
.Nm
attachments are specific to the sparc and sparc64 ports.
.Sh DESCRIPTION
.Nm
is an I/O interconnect bus mostly found in
.Tn SPARC
workstations and small to medium server class systems.
It supports both on-board peripherals and extension boards.
The
.Nm
specifications define the bus protocol as well as the electrical and
mechanical properties of the extension slots.
.Sh HARDWARE
.Ox
includes machine-independent
.Nm
drivers, sorted by device type and driver name:
.Ss Audio interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr audioamd 4
.Tn AMD
7990 codecs.
.It Xr audiocs 4
.Tn "Crystal Semiconductor"
CS4231A codecs.
.El
.Ss SCSI interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr esp 4
NCR53c94 and compatible
.Tn SCSI
interfaces.
.It Xr isp 4
Qlogic
.Tn SCSI
interfaces.
.El
.Ss Network interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr be 4
.Dq Big Mac
.Tn Ethernet
board.
.It Xr hme 4
.Dq Happy Meal
.Tn Ethernet
interfaces.
.It Xr le 4
.Tn Lance
7990 series
.Tn Ethernet
interfaces.
.It Xr qe 4
Quad Ethernet Controller
board.
.El
.Ss Bridges
.Bl -tag -width 12n -offset ind -compact
.It Xr stp 4
.Nm sbus
.Xr pcmcia 4
bridge.
.El
.Ss Graphics devices
.Bl -tag -width 12n -offset ind -compact
.It Xr agten 4
Fujitsu AG-10e accelerated 24-bit color frame buffer.
.It Xr bwtwo 4
framebuffer device.
.It Xr cgfourteen 4
Accelerated 8/24-bit color frame buffer.
.It Xr cgsix 4
Framebuffer device.
.It Xr cgthree 4
Framebuffer device.
.It Xr cgtwelve 4
Accelerated 24-bit color frame buffer.
.It Xr mgx 4
SMS MGX and MGXPlus accelerated 24-bit color frame buffers.
.It Xr pnozz 4
Tadpole Weitek P9100 frame buffer.
.It Xr tcx 4
Accelerated 8/24-bit color frame buffer.
.It Xr tvtwo 4
Accelerated 24-bit color frame buffer.
.It Xr vigra 4
8-bit SBus color frame buffer with VGA-compatible modes.
.It Xr zx 4
Accelerated 24-bit color frame buffer.
.El
.Ss Serial and parallel interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr apio 4
Aurora Technologies pio1 parallel port card.
.It Xr asio 4
Aurora Technologies pio2 serial port card.
.It Xr magma 4
Magma LC series Serial/Parallel Interface cards.
.It Xr spif 4
Sun Serial/Parallel Interface card.
.El
.Ss Miscellaneous devices
.Bl -tag -width 12n -offset ind -compact
.It Xr uperf 4
Performance counters on the host bridge.
.It Xr presto 4
Prestoserve battery-backed memory.
.El
.Sh SEE ALSO
.Xr apio 4 ,
.Xr asio 4 ,
.Xr audioamd 4 ,
.Xr audiocs 4 ,
.Xr be 4 ,
.Xr bwtwo 4 ,
.Xr cgsix 4 ,
.Xr cgthree 4 ,
.Xr esp 4 ,
.Xr hme 4 ,
.Xr intro 4 ,
.Xr isp 4 ,
.Xr le 4 ,
.Xr magma 4 ,
.Xr qe 4 ,
.Xr qec 4 ,
.Xr spif 4 ,
.Xr stp 4 ,
.Xr uperf 4 ,
.Xr xbox 4
.Sh HISTORY
The machine-independent
.Nm sbus
subsystem appeared in
.Nx 1.3 .
.Ox
support first appeared in
.Ox 2.0 .