APPENDIX A
BASlC LANGUAGE ERROR
MESSAGES
The following error messages are displayed by BASIC. Error
messages 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 DESCRIPTION
1 TOO MANY FILES There is a limit of 10
files OPEN at one time.
2 FILE OPEN An attempt was made to
open a file using the
number of an already
open file.
3 FILE NOT OPEN The file number
specified in an I/O
statement must be
opened before use.
4 FILE NOT FOUND Either no file with that
name exists (disk) or
an end-of-tape marker
was read (tape).
5 DEVICE NOT PRESENT The required I/O device is
not available or buffers
deallocated (cassette).
Check to make sure device
is connected and turned on.
6 NOT INPUT FILE An attempt was made to GET
or INPUT data from a
file that was specified
as output only.
A-1
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