INTRO(4)              OpenBSD Programmer's Manual (HP300)             INTRO(4)

NAME
     intro - introduction to 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 /usr/adm/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).

HP DEVICE SUPPORT
     This section describes the hardware supported on the HP 9000/300 series.
     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 ac-
     cessed 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 autoconfigura-
     tion time it is not accessible at any time afterwards.  To enable a de-
     vice which did not autoconfigure, the system will have to 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)

     Building 4.3 BSD UNIX Systems with Config (SMM:2).

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 CS/80 drives.

           ct         7946/9144 CS/80 cartridge tape
           dca        98644 built-in serial interface
           dcm        HP 98642A communications multiplexer
           dma        98620B DMA controller
           dv         HP98730 ``DaVinci'' device interface
           gb          HP98700 ``Gatorbox'' device interface
           grf/ite    Topcat/Gatorbox/Renaissance frame buffer
           hil        HIL interface
           hpib       Built-in and 98625 HP-IB interface
           ite        HP Internal Terminal Emulator
           le         98643 Lance-based ethernet interface
           mem        main memory
           ppi        HP-IB printer/plotter interface
           rb         HP98720 ``Renaissance'' device interface
           rd         CS/80 disk interface
           rmp        HP Remote Maintenance Protocol family
           st         CCS SCSI tape drive
           tc         HP98544-98550 ``Topcat'' and ``Catseye'' device interface

HISTORY
     The HP300 intro appeared in 4.3BSD-Reno.

OpenBSD 2.9                      June 5, 1993                                2
