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35 .Nd introduction to prep special files and hardware support
37 This section describes the special files, related driver functions,
38 and networking support available in the system.
39 In this part of the manual, the
41 section of each configurable device gives a sample specification
42 for use in constructing a system description for the
47 section lists messages which may appear on the console
48 and/or in the system error log
50 due to errors in device operation;
55 This section contains both devices
56 which may be configured into the system
57 and network related information.
58 The networking support is introduced in
60 .Sh PMPPC DEVICE SUPPORT
61 This section describes the hardware supported on the
62 .Tn PowerPC Reference Platform
64 Software support for these devices comes in two forms.
65 A hardware device may be supported with a character or block
67 or it may be used within the networking subsystem and have a
68 .Em network interface driver .
69 Block and character devices are accessed through files in the file
70 system of a special type; see
72 Network interfaces are indirectly accessed through the interprocess
73 communication facilities provided by the system; see
76 A hardware device is identified to the system at configuration time
77 and the appropriate device or network interface driver is then compiled
79 When the resultant system is booted, the
80 autoconfiguration facilities in the system probe for the device
81 and, if found, enable the software support for it.
82 If a device does not respond at autoconfiguration
83 time it is not accessible at any time afterwards.
84 To enable a device which did not autoconfigure,
85 the system will have to be rebooted.
87 The autoconfiguration system is described in
89 A list of the supported devices is given below.
99 man page first appeared in
102 The devices listed below are supported in this incarnation of
104 Devices are indicated by their functional interface.
105 Not all supported devices are listed.
107 The pnpbus is a pseudo-bus which is a configuration interface for certain
108 devices on PReP machines.
109 These devices are defined in the PReP
110 residual data with configuration information, similar to
112 The underlying bus is generally ISA.
114 ISA devices are supported through the
116 bus and associated devices.
118 PCI devices are supported through the
120 bus and associated devices.
122 USB devices are supported through the
124 bus and associated devices.
126 Additionally, the following specific devices are supported:
127 .Bl -tag -width "xxxxxxxx" -compact -offset indent
135 Western Digital/SMC WD80x3 ethernet driver
137 mc146818 compatible time-of-day clock
139 Mostek MK48T18 time-of-day chip