Getting Started GM300 Radio Service Software Manual
2-12
6880902Z36-B October, 1996
Understanding Computer Basics
2
You may have noticed some special characters in the preceding table (*, $, .). Certain keyboard characters
mean special things to DOS. Some of these are:
There are a couple limitations you may want to know about DOS, RSS files and directories.
❏ DOS only allows file names to be 8 characters long. However, file names can have an optional
1, 2 or 3-character extension after the file name. The extension must be separated from the file
name by a period (sometimes called a “dot”).
❏ DOS allows only 111 files under the root directory (topmost) on any diskette or hard disk. We
highly recommend that you further subdivide your files into more directories before you
accumulate this many files in any directory, not just the root directory. It's very confusing and
time-consuming to work with or view this many files at once.
❏ The maximum number of files allowed by RSS in any non-root directory, whether diskette or
hard disk, is approximately 400. This is an RSS limitation, not a DOS or computer limitation. If
you have more than 400 files, create another directory.
2.4.5 Using RSS with Window Applications
The RSS is not a Microsoft Windows program. The RSS program can be executed only from the DOS
prompt on computers which are running Microsoft Windows.
Table 2-7. DOS Special Characters
DOS Special Character What It Means
*
Wildcard character. You can substi-
tute this character for any type or
quantities of characters/digits that
follow (not precede) it
\
Backslash. A special character to
separate directories when specify-
ing path names. By itself, it also rep-
resents the root directory
?
Wildcard character meaning you
can substitute/match it for any sin-
gle-digit or character
$P$G
Sets the display’s default prompt to
be the current drive and path name,
followed by the “>” character
.
Period (or “dot”). This character,
though not visible when a DIR
command is executed, separates
DOS file names from their exten-
sions. Remember this when copy-
ing or deleting files.
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