intro(4)
- NetBSD Manual Pages
INTRO(4) NetBSD/pmax Kernel Interfaces Manual INTRO(4)
NAME
intro - introduction to pmax special files and hardware support
DESCRIPTION
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 specifi-
cation for use in constructing a system description for the config(8)
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 sys-
tem and network related information. The networking support is intro-
duced in netintro(4).
DEVICE SUPPORT
This section describes the hardware supported on the pmax (MIPS-based
DECstation/DECsystem) platform. 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 inter-
process 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 autoconfigura-
tion 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.
SEE ALSO
autoconf(4), config(8)
SUPPORTED SYSTEMS
The following systems are supported:
DECstation 2100 and 3100
also known as "pmax". The 2100 and 3100 differ only in CPU
clock speed.
DECsystem 5100
also known as "MIPSMATE".
DECstation 5000/200
also known as "3MAX". The 5000/200 has a 25 MHz R3000 and
is the first-generation TURBOchannel platform.
DECstation 5000/1xx
also known as "3MIN" or "kmin". The 5000/1xx comes in 20
MHz, 25 MHz, and 33 MHz versions and is numbered appropri-
ately. Two 12.5 MHz TURBOchannel slots are provided.
DECstation 5000/2x
also known as "Personal DECstation" or "MAXINE". The
5000/xx comes in 20 MHz and 25 MHz variants. A baseboard
1024x786 framebuffer, and two 12.5 MHz TURBOchannel slots
are provided.
DECstation 5000/240 and DECsystem 5900
also known as "3MAXPLUS". These systems have a 40 MHz
R3400 CPU and three 25 MHz TURBOchannel slots. The 5900
is an expanded-cabinet version of the 5000/240.
TURBOchannel systems (except the 5000/200) can be upgraded to an R4000 or
R4400 CPU by upgrading the CPU daughterboard.
The Qbus-based DECsystem 5400 and 5500 are not supported.
The multi-processor XMI-bus DECsystem 5800 is not supported.
LIST OF DEVICES
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.
asc NCR 53c94-based SCSI interface, either on DECstation
5000-series baseboard or PMAZ-AA SCSI option card.
bba baseboard audio on 5000/xx systems.
dc serial driver for DEC custom four-port serial device
(dc7085 DZ-11 clone) on the baseboard of DECstation
2100/31000, 5100, and 5000/200 systems.
scc serial driver for Zilog SCC asynchronous/synchronous
devices on the baseboard of DECstation 5000-series systems
(excluding 5000/200).
le Ethernet driver for baseboard or TURBOchannel option
cards.
ioasic Adaptor for the baseboard IO ASIC on second-generation
TURBOchannel machines. An ioasic must be configured on a
5000/1xx, 5000/xx, and 5000/240 if support for baseboard
devices or the TURBOchannel bus is desired.
fb Pseudo-device driver supporting glass-tty console emula-
tion on DEC framebuffers, DEC mice, and LK-201 family key-
boards.
sii DEC custom SCSI adaptor on DECstation 2100, 3100, 5100,
and VAXstation 3100.
pm DECstation 2100/3100 baseboard framebuffer
tc Adaptor for the TURBOchannel I/O expansion bus. This must
be included if any TURBOchannel option cards are sup-
ported, or for the baseboard Ethernet and SCSI devices on
a 5000/200.
cfb PMAG-B TURBOchannel 1024x876 unaccelerated 2-D frame-
buffer.
sfb PMAGB-BA TURBOchannel 1280x1024 unaccelerated framebuffer.
mfb PMAG-AA TURBOchannel 1280x1024 mono/greyscale unacceler-
ated framebuffer.
px PMAG-C TURBOchannel 2-D accelerated graphics board
fb pmax frame buffer pseudo-device
UNSUPPORTED DEVICES
The following devices are not supported, due to unavailability of either
documentation or sample hardware:
PMAG-C accelerated 2-D framebuffer card
PMAG-D accelerated 2-D framebuffer card
PMAG-E accelerated 2-D framebuffer card
PMAG-F accelerated 2-D framebuffer card
LoFi DEC Western Research Labs audio card
The floppy-disk drive on the MAXINE baseboard is currently not supported.
HISTORY
This pmax intro appeared in NetBSD 1.2.
NetBSD 2.0.2 September 12, 2001 NetBSD 2.0.2
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