Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

fya(4) [ultrix man page]

fya(4)							     Kernel Interfaces Manual							    fya(4)

       fya - DUP pseudo-device special files

       pseudo-device msdup

       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.

       Device special files to connect to the driver.

See Also
       dupterm(8), MAKEDEV(8)


Check Out this Related Man Page

pseudo(4)							   File Formats 							 pseudo(4)

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 5.10 15 Jun 1993 pseudo(4)
Man Page