SBUS(4) | Device Drivers Manual | SBUS(4)

# NAME

`sbus` — introduction to SBus bus support

# SYNOPSIS

`sbus* at mainbus?`
`sbus* at xbox?`

# DESCRIPTION

These `sbus` attachments are specific to the sparc64 port.

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

OpenBSD provides support for the following devices. Note that not all architectures support all devices.

## Audio interfaces

audiocs(4)
  SPARC CS4231 audio device

## SCSI interfaces

esp(4)
  ESP NCR 53c94 on-board or SBus SCSI interface
qla(4)
  QLogic ISP2100/2200/2300 Fibre Channel controller
qlw(4)
  QLogic ISP1000/1020/1x40/1x80/1x160 SCSI controller

## Network interfaces

be(4)
  SPARC 10/100 Ethernet device
gem(4)
  GEM 10/100/1Gb Ethernet device
hme(4)
  Sun Happy Meal 10/100 Ethernet device
le(4)
  AMD LANCE Ethernet device
lebuffer(4), ledma(4)
  AMD LANCE Ethernet device
qe(4)
  SPARC 10/100 Ethernet device
qec(4)
  SPARC Quad Ethernet Controller
ti(4)
  Alteon Networks Tigon I and II Gigabit Ethernet device

## Bridges

stp(4)
  SBus PCMCIA bridge

## Graphics devices

agten(4)
  Fujitsu AG-10e accelerated 24-bit color frame buffer
bwtwo(4)
  Monochromatic 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
rfx(4)
  Vitec/Connectware/AP&D RasterFlex framebuffer series
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
zs(4)
  Zilog 8530 (ZSCC) serial communications driver

## Miscellaneous devices

auxio(4)
  Miscellaneous I/O controls
clock(4)
  real-time clock
fdc(4)
  NEC765 compatible floppy disk driver
uperf(4)
  Performance counters on the host bridge
xbox(4)
  SBus Expansion subsystem

# SEE ALSO

intro(4)

# HISTORY

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

September 8, 2021 | Debian