Vector Basic Interpreter Basic 80 Reference Manual - page 169
of
190
~
NF
NEXT without FOR
A variable
in
a
NEXT
correspond
to
any
unmatched FOR statement
statement
previously
variable •.
does
not
executed,
Syntax error
A line
is
encountered
that
contains
some
incorrect
sequence
of
characters
(such as
unmatched parenthesis, misspelled command
or
statement, incorrect punctuation, etc.).
Return without GOSUB
.A RETURN statement is encountered
for
which
there
is
no
previous,
unmatched
GOSUB
statement.
00
4
.
Out of data
A READ statement is executed when
there
are
no DATA statements with unread data remaining
in the program.
FC
5
Illegal function call
A parameter that is out of range is passed to
a
math
or string function.
An FC error may
also occur as the result of:
1.
a
negative
subscript
2.
a negative or zero argument with LOG
4.
a negative mantissa
with
a
non-integer
exponent