Sun Microsystems Sun Workstation 100U System Manager's Manual page 171

CONFIG(8)
MAINTENANCE COMMANDS CONFIG(8)
16
The second group of lines in the configuration file describe which devices your system has and
what they are connected to (for example, I have a Xylogics xy450 on the Multibus). These lines
have the following format:
dev_type dev_name
at
con_dev more_info
Dev_type is either tape, disk, controller, device, or pseudo-device. These types have the fol-
lowing meanings:
controller
is a Multibus disk controller or a Multibus tape controller.
disk or tape
are devices connected to a controller.
device
is something that plugs into the Multibus, like a cartridge tape interface.
pseudo-device
is something which should be conditionally loaded, but is not really a device.
Current examples are the pseudo-tty driver and various network subsystems. (For
pseud~devices,
more_Into may be specified as an integer, that gives the value of
the symbol defined in the header file created for that device, and is generally used
to indicate the number of instances of the pseudo-device to create. If you load a
subsystem you will probably find it convenient to enable conditional code using an
options specification.
dev_name
is the name of the device you are specifying. If it is not a pseudo-device, you must give
a number afterwards (for example, xycO for a Xylogics controller, or arO for an Archive quarter-
inch tape controller).
Con_dev is what the device you are specifying is connected to. For example, disk xyl is con-
nected to controller xycO.
more_info is a sequence of the following:
csr
addr
Specifies the csr (command and status registers) for a device. Must be specified for
all Multibus tape and disk controllers and all devices connected to the Multibus.
Make certain that you put a leading zero on the address so that it will be inter-
preted as an octal number.
drive
number
For a disk or tape, specifies which drive this is.
flap number
These flags are passed to the device driver at system initialization time.
priority
level
For devices which interrupt on the Multibus, specifies the interrupt level at which
the device operates.
The easiest way to understand config files it to look at a working one and modify it to suit your
system. A good sample is provided in the In8talling UNIX for the Fir8t Time chapter of the SY8-
tem In8tallation and Maintenance Guide at the beginning of this manual. In the example, all lines
are explained.
A ! may be substituted for a number in two places and the system will figure out what to fill in
for the ! when it boots. You can put question marks on a con_dev (e.g. at mba?), or on a drive
number (e.g. drive ?) This allows redundancy, as a single system can be built which will reboot on
different hardware configurations.
Last change: 6 March 1984
Sun Release 1.1