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.\"     from: @(#)intro.4	8.1 (Berkeley) 6/5/93
.\"
.Dd February 17, 2017
.Dt INTRO 4 hp300
.Os
.Sh NAME
.Nm intro
.Nd introduction to hp300 special files and hardware support
.Sh DESCRIPTION
This section describes the special files, related driver functions,
and networking support
available in the system.
In this part of the manual, the
.Tn SYNOPSIS
section of
each configurable device gives a sample specification
for use in constructing a system description for the
.Xr config 1
program.
The
.Tn DIAGNOSTICS
section lists messages which may appear on the console
and/or in the system error log
.Pa /var/log/messages
due to errors in device operation;
see
.Xr syslogd 8
for more information.
.Pp
This section contains both devices
which may be configured into the system
and network related information.
The networking support is introduced in
.Xr netintro 4 .
.Sh HP DEVICE SUPPORT
This section describes the hardware supported on the
.Tn HP
9000/300 series.
Software support for these devices comes in two forms.  A hardware
device may be supported with a character or block
.Em device driver ,
or it may be used within the networking subsystem and have a
.Em network interface driver .
Block and character devices are accessed through files in the file
system of a special type; see
.Xr mknod 8 .
Network interfaces are indirectly accessed through the interprocess
communication facilities provided by the system; see
.Xr socket 2 .
.Pp
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 will have to be rebooted.
.Pp
The autoconfiguration system is described in
.Xr hp300/autoconf 4 .
.Sh LIST OF DEVICES
The devices listed below are supported in this incarnation of
the system.  Pseudo-devices are not listed.
Devices are indicated by their functional interface.
Occasionally, new devices of a similar type may be added
simply by creating appropriate table entries in the driver;
for example, new
.Tn CS/80
drives.
.Bl -column grf/ite description -offset indent
.It com	serial interfaces (98644, 98626, and built-in apci and dca)
.It ct	7946/9144 CS/80 cartridge tape
.It dcm	HP 98642A communications multiplexer
.It dio	DIO/DIO-II bus
.It dnkbd	Domain keyboard
.It dvbox	HP98730 ``DaVinci'' device interface
.It fhpib	``fast'' HP-IB interface
.It frodo	Frodo ASIC (a.k.a. Apollo Utility Chip)
.It gbox	HP98700 ``Gatorbox'' device interface
.It grf/ite	Topcat/Gatorbox/Renaissance frame buffer
.It hil	HIL interface
.It nhpib	Built-in and 98625 HP-IB interface
.It hyper	Hyperion device interface
.It intio	HP300 internal I/O space driver
.It ite	HP Internal Terminal Emulator
.It le	98643 Lance-based Ethernet interface
.It ppi	HP-IB printer/plotter interface
.It rbox	HP98720 ``Renaissance'' device interface
.It rd	CS/80 disk interface
.It rmp	HP Remote Maintenance Protocol family
.It spc	HP98265A SCSI interface
.It topcat	HP98544-98550 ``Topcat'' and ``Catseye'' device interface
.El
.Sh SEE ALSO
.Xr config 1 ,
.Xr hp300/autoconf 4
.Rs
.%T "Building 4.3 BSD UNIX Systems with Config (SMM:2)"
.Re
.Sh HISTORY
The
.Tn HP300
.Nm intro
appeared in
.Bx 4.3 Reno .