SBus —
introduction to machine-independent SBus bus support and
  drivers
sbus* at mainbus?
sbus* at iommu?
sbus* at xbox?
These
  
    | SBus | attachments are specific to the NetBSD/sparc and
      NetBSD/sparc64 ports. | 
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.
NetBSD includes machine-independent
  SBus drivers, sorted by device type and driver name:
  - esp
- NCR53c94 and compatible SCSI interfaces.
- isp
- Qlogic SCSI interfaces.
 
  - le
- Lance 7990 series Ethernet interfaces.
- hme
- “Happy Meal” Ethernet interfaces.
- be
- “Big Mac” Ethernet board.
- qe
- Quad Ethernet Controller board.
 
  - xbox
- an Sbusexpansion box.
 
  - bwtwo
- framebuffer device.
- cgthree
- framebuffer device.
- cgsix
- framebuffer device.
- pnozz
- framebuffer device.
- tcx
- framebuffer device.
- zx
- framebuffer device.
 
  - magma
- Magma Serial/Parallel combo device.
 
  - fdc
- Floppy disk controller
 
audiocs(4),
  be(4),
  bwtwo(4),
  cgsix(4),
  cgthree(4),
  en(4),
  esp(4),
  fdc(4),
  hme(4),
  intro(4),
  isp(4),
  le(4),
  magma(4),
  pnozz(4),
  qe(4),
  tcx(4),
  xbox(4),
  zx(4)
The machine-independent SBus subsystem appeared in
  NetBSD 1.3.