INTRO(4)

NAME
intro - introduction to pc532 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 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).

DEVICE SUPPORT
This section describes the hardware supported on the PC532 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 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.

SEE ALSO
config(1), autoconf(4), cd(4), sd(4), ss(4), st(4)

SUPPORTED SYSTEMS
The pc532 is a custom motherboard that fits in a PC/AT case, with a 25 MHz National Semiconductor 32532 CPU and 32381 FPU. There are less than 200 of these systems in the world.

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.

lpt Centronics parallel port driver

mem memory files

ncr NCR5380/DP8490 low level SCSI interface

plip
    Option for the lpt driver to allow IP over Centronics parallel ports

scn Signetics DUART serial communications interface

HISTORY
This pc532 intro appeared in NetBSD 1.4. Large chunks of text carefully recycled (shamelessly appropriated) from NetBSD/pmax intro(4).