TAL Programmer's Guide

Appendix E File Names and TACL
Commands
096254 Tandem Computers Incorporated E–1
This appendix describes how you specify disk file names and TACL commands.
Topics include:
Disk file names
TACL DEFINE commands
TACL PARAM commands
TACL ASSIGN commands
TACL ASSIGN SSV commands
For information on process or device file names, see the Guardian Programmer’s Guide.
Disk File Names A disk file name identifies a file that contains data or a program. A disk file name
reflects the specified file’s location on a Tandem system. The location of a disk file on
a Tandem system is analogous to the location of a form in a file cabinet. To find the
form, you must know:
Which file cabinet it is in
Which drawer it is in
Which folder it is in
Which form it is
Analogously, to find a disk file on a Tandem system, you must know:
Which node (system) it is on
Which volume it is on
Which subvolume it is on
Which disk file it is
In general, disk file names:
Cannot contain spaces
Can contain ASCII characters only
Are not case-sensitive; the following names are equivalent:
myfile
MyFile
MYFILE
Language functions and system procedures that return file names might return
them in uppercase (even if the file name was originally in lowercase). Check the
description of the function or procedure that you are using.