Tandy TRS-80 Owner Manual & Programming Manual page 24

A GARBLED UP DISK
WHEN
THINGS
GO
WRONG
Your
Computer
realizes
nobody's
perfect.
When
you
make
a mistake,
it'll
try
to
notify
you
imme-
diately
and
tell
you
what kind
of
"error"
you
made.
You've probably already
been
notified
that
you
made
a
"SN ERROR."
If
you
haven't,
type DIIR
[ENTER)
deliberately
mispelling
DIR.
SN
means
"Syntax"
error.
It's
the
Computer's
way
of telling
you
that
"DIIR"
doesn't
make
sense
to
it.
The word
is
not in
its
vocabulary.
An SN
error
usually
means
you
made
a typographical
error.
Here
are
some
other error
messages
you're likely
to
get
with your disk system:
AE
—
You are trying
to
RENAME
a
file
(discussed
in
the
next chapter)
to
a filename
which
Already
Exists.
DF
—
The Disk you
are trying
to store
your
file
on
is
Full.
Use
another
disk.
DN
—
You
are
using a Drive
Number
higher than
3.
You
will also
get this error
if
you
do not
specify
a drive
number when
using
DSKINI
or
BACKUP.
If
you have only one drive
specify
drive
with
these
two
commands
(DSKINIO
or
BACKUP
0)
FN
—
You used an unacceptable format
to
name
your
file.
The
last
Chapter
explains
which
File
Names
are acceptable
to
the
Computer.
FS
—
There
is
something
wrong
with your
disk
file.
See
10
for
instructions
on
what
to do.
/0
—
Technically, this
means
you have asked
the
Computer
to
divide
a
number
by
0,
which
is
impossible.
However, you might
also get
this error
when
you
don't enclose
a filename
in
quotation
marks.
10
—
The Computer
is
having trouble Inputting
or
Outputting information
to
the disk.
(1)
Make
sure there
is
a disk inserted
properly
in
the indicated
drive
and
the
drive
door
is
closed.
(2) If
you
still
get
this error,
there
might
be
something
wrong with your
disk.
Try reinserting the disk
first.
Then
try
using a
different
one
or
reformatting
it.
(Remember
that reformatting a
disk erases
its
contents.)
(3)
If
you
still
get this error,
you probably
have
a
problem with
the
Computer
System
itself.
Call the
Radio
Shack
Repair Center.
NE
—
The Computer
can't find
the disk
file
you
want.
Check
the
disk's
directory to see
if
the
file is
there. If
you have more than one
disk
drive,
you might
not
have included the
appropriate drive
number
in the filename. If
you are
using
COPY, KILL,
or
RENAME
(discussed in the
next
chapter),
you might
have
left
off
the extension.
TM
—
Technically
this
is
caused by
a
program
which mixes
"strings"
with "numbers."
However, you might
get this error
if
you
don't
enclose
a filename
in
quotation
marks.
UF
—
You
will
only get the error
when
you have
the
VERIFY command
ON
and
are writing
to
a disk.
The Computer
is
informing
you
that there
is
a flaw
in
what
it
wrote.
See
10
for
instructions
on
what
to do.
W
P
—
You
are trying to store
information on a
disk
which
is
Write Protected.
Either take the
label off
the write protect notch or use a
dif-
ferent disk.
If
your
disk
is
not
Write
Pro-
tected,
then there
is
an
input/output prob-
lem.
See
10
for instructions
on
what
to
do
about
this.
All other errors
you might
get are errors in the
program you
are using.
If
you did not write the
program and
get
one of these
errors,
you need
to
contact the people
who
wrote
it.
If
you
did write
it,
check Appendix
G,
where
you'll find
an explana-
tion of
all
the error
messages.
16