fya(4) [ultrix man page]

fya(4)							     Kernel Interfaces Manual							    fya(4)

Name
       fya - DUP pseudo-device special files

Syntax
       pseudo-device msdup

Description
       The pseudo-device is used by Digital to provide support for the DUP protocol.  DUP allows execution of various utilities and diagnostics on
       a number of Digital disk and tape controllers.  Users of DUP access the pseudo-devices through the application These pseudo-devices  should
       be created using the command
       #
       This will create a set of 16 such devices.  Note that only 16 devices are supported.

Files
       Device special files to connect to the driver.

See Also
       dupterm(8), MAKEDEV(8)

																	    fya(4)

pseudo(4)							   File Formats 							 pseudo(4)

NAME

       pseudo - configuration files for pseudo device drivers

DESCRIPTION

       Pseudo devices are devices that are implemented entirely in software. Drivers for pseudo devices must provide driver configuration files to
       inform the system of each pseudo device that should be created.

       Configuration files for pseudo device drivers must identify the parent driver explicitly as pseudo, and must  create  an  integer  property
       called instance which is unique to this entry in the configuration file.

       Each  entry in the configuration file creates a prototype devinfo node. Each node is assigned an instance number which is determined by the
       value of the instance property. This property is only applicable to children of the pseudo parent, and is  required  since  pseudo  devices
       have no hardware address from which to determine the instance number. See driver.conf(4) for further details of configuration file syntax.

EXAMPLES

       Example 1 A sample configuration file.

       Here  is a configuration file called ramdisk.conf for a pseudo device driver that implements a RAM disk. This file creates two nodes called
       "ramdisk". The first entry creates ramdisk node instance 0, and the second creates ramdisk node, instance 1, with the additional  disk-size
       property set to 512.

	 #
	 # Copyright (c) 1993, by Sun Microsystems, Inc.
	 #
	 #ident  "@(#)ramdisk.conf	 1.3	 93/06/04 SMI"
	 name="ramdisk" parent="pseudo" instance=0;
	 name="ramdisk" parent="pseudo" instance=1 disk-size=512;

SEE ALSO

       driver.conf(4), ddi_prop_op(9F)

       Writing Device Drivers

SunOS 5.11							    15 Jun 1993 							 pseudo(4)