DEFAULT monitor command When the current or specified physical device is not a disk device, a leading "\" specifies that the directory path starts at the top-level directory. That is, the path replaces any default path currently defined (absolute path). The absence of a leading "\" indicates that the path is to be appended to the current default path (relative path). NOTE : If the"unit" and "directory_path" parameters are omitted, the unit and the directory path will be canceled in the default. If all parameters are omitted, the current directory path is displayed.
If the "unit" parameter specifies a unit different from the current default, the directory path specified is always started at the top-level directory. As a special case, nonstandard directories (for example, " [...]" or "/.../") are accepted to assist with referencing other systems. Details In the following description, the term "directory specification" is used to refer to the combination of physical device and/or disk unit and/or directory path.
When a disk-related eV+ operation (for example, FDIRECTORY, LOAD, STORE, and FOPEN_) is processed, the eV+ system automatically combines the current "default" directory specification with the directory specification supplied to the command or instruction. The DEFAULT command can be used to set the directory specification that is to be used in such situations. (See the examples below.) NOTE : The DEFAULT command does not verify that the specified default device, unit, and directory can actually be accessed. The DEFAULT command can be entered without any parameters to have the current default directory specification displayed on the Monitor screen.
When the eV+ system is booted from disk, the initial default disk relationship is set according to the configuration stored on the system disk. 1 After a DEFAULT command is processed, subsequent disk operations (and DEFAULT commands) will use the new default directory specification as required. The following "rules" determine the directory specification that will result from a combination of the default specification and the directory specification that is included in any command or instruction: eV+Operating System Reference Guide, 2.x,18321-000 Rev A Page 57