Radio Shack TRS-80 Model 4

BASIC ERROR CODES AND MESSAGES
Number
1
2
3
4
5
Message
NEXT without FOR
A variable in a NEXT statement does not
correspond to any previously executed FOR
statement variable.
Syntax error
BASIC encountered a line that contains an
incorrect sequence of characters (such as
unmatched parenthesis, misspelled
statement, incorrect punctuation, etc.). BASIC
automatically enters the edit mode at the line
that caused the error.
RETURN without GOSUB
BASIC encountered a RETURN statement for
which there is no matching GOSUB
statement.
Out of DATA
BASIC encountered a READ statement, but
no DATA statements with unread items
remain
in the program.
Illegal function call
A parameter that is out of range was passed
to a math or string function. An FC error may
also occur as the result of:
a. A negative or unreasonably large
subscript.
b. A negative or zero argument with LOG.
c. A negative argument to SQR.
d. A negative mantissa with a noninteger
exponent.
e. A call to a USR function for which the
starting address has not yet been given.
f. An improper argument to MID$, LEFT$,
RIGHT$, PEEK, POKE, TAB, SPC,
STRING$, SPACE$, INSTR, or
ON
... GOTO.
A-69