APPENDIX L
ERROR MESSAGES
This appendix contains a complete list of the error messages gener-
ated by the Commodore-64, with a description of causes.
BAD DATA String data was received from an open file, but the pro-
gram was expecting numeric data.
BAD SUBSCRIPT The program was trying to reference an element of
an array whose number is outside of the range specified in the DIM
statement.
CAN'T CONTINUE The CONT command will not work, either because
the program was never RUN, there has been an error, or a line has
been edited. .
DEVICENOT PRESENT The required I/O device was not available for
an OPEN, CLOSE, CMD, PRINT#, INPUT#, or GET#.
DIVISION BY ZERO Division by zero is a mathematical oddity and not
allowed.
EXTRA IGNORED Too many items of data were typed in response to
an INPUT statement. Only the first few items were accepted.
FILENOT FOUND If you were looking for a file on tape, and END-OF-
TAPEmarker was found. If you were looking on disk, no file with that
name exists.
FILENOT OPEN The file specified in a CLOSE, CMD, PRINT#, INPUT#,
or GET#, must first be OPENed.
FILEOPEN An attempt was made to open a file using the number of
an already open
file.
FORMULA TOO COMPLEX The string expression being evaluated
should be split into at least two parts for the system to work with, or a
formula has too many parentheses.
ILLEGALDIRECT The INPUT statement can only be used within a pro-
gram, and not in)direct mode.
ILLEGALQUANTITY A number used as the argument of a function or
statement is out of the allowable range.
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