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

# NAME

`SBus` — introduction to machine-independent SBus bus support and drivers

# SYNOPSIS

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

These

`SBus` | attachments are specific to the NetBSD/sparc and NetBSD/sparc64 ports.

# DESCRIPTION

`SBus` is a 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.

# HARDWARE

NetBSD includes machine-independent `SBus` drivers, sorted by device type and driver name:

## SCSI interfaces

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

## Network interfaces

le(4)
  Lance 7990 series Ethernet interfaces.
hme(4)
  “Happy Meal” Ethernet interfaces.
be(4)
  “Big Mac” Ethernet board.
qe(4)
  Quad Ethernet Controller board.

## Bridges

xbox(4)
  an `Sbus` expansion box.

## Graphics devices

bwtwo(4)
  framebuffer device.
cgthree(4)
  framebuffer device.
cgsix(4)
  framebuffer device.
pnozz(4)
  framebuffer device.
tcx(4)
  framebuffer device.
zx(4)
  framebuffer device.

## Audio devices

audiocs(4)
  CS4231 codec.

## Serial interfaces

magma(4)
  Magma Serial/Parallel combo device.

## Floppy interfaces

fdc(4)
  Floppy disk controller

# SEE ALSO

intro(4)

# HISTORY

The machine-independent `SBus` subsystem appeared in NetBSD 1.3.

September 6, 2018 | NetBSD 11.0