Commodore 128D - Page 353

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APPENDIX A
— BASIC LANGUAGE
ERROR
MESSAGES
The following error messages are displayed by BASIC. Error mes
sages can also be displayed with the use of the ERR$() function. The
error numbers below refer only to the number assigned to the error
for use with the ERR$() function.
ERROR* ERROR NAME
1 TOO MANY FILES
FILE OPEN
FILE NOT OPEN
FILE NOT FOUND
8
DESCRIPTION
There is a limit of 10 files
OPEN at one time.
An attempt was made to open
a file using the number of an
already open file.
The file number specified in an
I/O statement must be opened
before use.
Either no file with that name
exists (disk) or an end-of-tape
marker was read (tape).
DEVICE NOT PRESENT The required I/O device is not
available or buffers dealloca
ted (cassette). Check to make
sure the device is connected
and turned on.
NOT INPUT FILE
NOT OUTPUT FILE
MISSING FILE NAME
ILLEGAL DEVICE
NUMBER
An attempt was made to GET
or INPUT data from a file that
was specified as output only.
An attempt was made to send
data to a file that was speci
fied as input only.
File name missing in
command.
An
attempt was made to use a
device improperly (SAVE to
the screen, etc.).
345 APPENDIX A—Basic Language Error Messages