intro
—
introduction to special files and hardware support
This section describes the special files, related driver functions, and
networking support available in the system. In this part of the manual, the
SYNOPSIS section of each configurable device gives a sample specification for
use in constructing a system description for the
config(1) program. The
DIAGNOSTICS section lists messages which may appear on the console and/or in
the system error log /var/log/messages due to errors
in device operation; see
syslogd(8) for more
information.
This section contains both devices which may be configured into
the system and network related information. The networking support is
introduced in
netintro(4).
This section describes the hardware supported by
NetBSD/arc. Software support for these devices comes
in two forms. A hardware device may be supported with a character or block
device driver, or it may be used within the networking
subsystem and have a network interface driver. Block and
character devices are accessed through files in the file system of a special
type; see mknod(8). Network
interfaces are indirectly accessed through the interprocess communication
facilities provided by the system; see
socket(2).
A hardware device is identified to the system at configuration
time and the appropriate device or network interface driver is then compiled
into the system. When the resultant system is booted, the autoconfiguration
facilities in the system probe for the device and, if found, enable the
software support for it. If a device does not respond at autoconfiguration
time it is not accessible at any time afterwards. To enable a device which
did not autoconfigure, the system must be rebooted.
The autoconfiguration system is described in
autoconf(4). A list of
the supported devices is given below.
NetBSD/arc supports a variety of systems conforming to
the ARC machine specification. The following systems are supported:
- Acer PICA
-
- DESKstation rPC44
-
- DESKstation Tyne
-
- MIPS Magnum 4000
-
- NEC Express 5800/230 PCI R4K
-
- NEC Express 5800/240 EISA R4K
-
- NEC Express RISCserver
-
- NEC ImageRISCstation
-
- NEC RISCserver 2200
-
- NEC RISCstation 2200 EISA
-
- NEC RISCstation 2200 PCI
-
- NEC RISCstation 2250
-
The devices listed below are supported in this incarnation of the system.
Devices are indicated by their functional interface. Not all supported devices
are listed.
- arcsisabr
- DESKstation rPC44 ISA host bridge
- jazzio
- Jazz internal bus host bridge
- jazzisabr
- Jazz ISA/EISA bus bridge
- necpb
- NEC RISCstation PCI host bridge
- tyneisabr
- DESKstation Tyne ISA host bridge
The following devices on the Jazz internal bus are supported.
- asc
- NCR 53c9x-based SCSI interface
- com
- NS16550-based serial communications interface
- fdc
- Floppy disk controller
- lpt
- Parallel port
- mcclock
- DS1287 real-time clock
- oosiop
- Symbios/NCR 53c700-based SCSI interface
- osiop
- Symbios/NCR 53c710-based SCSI interface
- pckbc
- PC keyboard controller
- sn
- SONIC Ethernet
- timer
- Interval timer
- vga
- VGA graphics
PCI devices are supported through the
pci(4) bus and associated
device drivers.
ISA devices are supported through the
isa(4) bus and associated
device drivers.
Console devices using ISA, Jazzio, or PCI video adaptors and
standard AT or PS/2 keyboards are supported by the machine independent
wscons(4) console
driver.
The following devices are not supported, due to unavailability of either
documentation or sample hardware:
- AD1848 audio on Jazzio
-
- EISA devices
-
- VXL framebuffer on MIPS Magnum and RISCstation 2200 EISA
-
This arc intro
appeared in NetBSD
2.0.
DESKstation rPC44 and Tyne support is currently broken.