Tandy TRS-80 Owner Manual & Programming Manual page 94

APPENDIX
G.
LS
NE
NF
(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 rein-
serting the disk
first.
Then
try
using a
dif-
ferent
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.
This error
could
also
be caused
by
input/output
problems with another
device,
such as the tape
recorder.
String too
Long,
characters.
NO
A
string
may
only be
255
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.
NEXT
without
FOR.
NEXT
is
being used without
a
matching
FOR
statement. This error also occurs
when
you have the
NEXT
lines
reversed
in
a
nested
loop.
File
Not Open.
You
cannot input
or
output data
to
a
file
until
you have
OPENed
it.
OB
Out
of
Buffer
space.
Use FILES
to
reserve
more
space.
OD
Out
of
Data.
A READ
was executed with
insuffi-
cient
DATA
for
it
to
READ.
A DATA
statement
may
have been
left
out
of
the program.
OM
Out
of
Memory.
All available
memory
has been
used
or reserved.
OS
Out
of String Space.
There
is
not
enough
space in
memory
to
do your
string operations.
Use
CLEAR
at
the beginning
of
your
program
to
reserve
more
string space.
OV
Overflow.
The number
is
too large
for
the
Com-
puter
to
handle.
RG
RETURN
without
GOSUB.
A RETURN
line
is
in
your
program with no matching
GOSUB.
SE
Set
to
non-fielded
string.
The
field
in
which you
are
attempting
to
LSET
or
RSET
data
in
has not
yet
been FIELDed. Check
the
FIELD
line.
SN
Syntax
error.
This could
result
from a
misspelled
command,
incorrect punctuation,
open
parenthe-
sis,
or
an
illegal
character.
Type the
program
line
or
command
over.
ST
String formula
too
complex.
A
string operation
was
too
complex
to
handle.
Break up
the operation
into shorter
steps.
TM
Type Mismatch.
This occurs
when
you
try
to
assign
numeric
data
to
a string variable
(A$
=
3)
or string data
to a
numeric variable (A
=
"DATA").
This could
also
occur
if
you do not
enclose
a filename
in quotes.
UL
Undefined
Line.
You
have
a
GOTO, GOSUB,
or
other
branching
line in the
program
asking the
Computer
to
go
to
a nonexisting
line
number.
VF
Verification.
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 instruc-
tions
on
what
to do.
WP
Write
Protected.
You
are trying
to store
informa-
tion
on
a disk
which
is
Write
Protected.
Either
take the label off
the write
protect
notch
or
use a
different disk.
If
your disk
is
not
Write
Protected,
then
there
is
an input/output problem. See 10
for
instructions
on what
to
do about
this.
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