Vector Basic Interpreter Basic 80 Reference Manual - page 172
26
FOR without NEXT
A FOR
was
encountered
without
a
matching
NEXT.
29
WHILE without ~lD
A WHILE statement does not
have
a
matching
WEND.
30
WEND without WHILE
A WEND was
encountered
without
a
matching
WHILE.
50
Field overflow
A FIELD statement is attempting
to
allocate
more bytes than were specified for the record
length of a random file.
Internal error
An internal malfunction
BASIC-SO.
Report
under which the message
has occurred in
Disk
the conditions
appeared.
52
Bad file number
A statement or comm~~d references a file with
a
file
number that is not OPEN or is out of
the
range
of
file
numbers
specified
at
initialization.
53
File not found
A LOAD, KILL or OPEN statement
references
a
file that does not exist on the current disk.
Bad file mode
An attempt is made to use PUT,
GET,
or
LOF
with a sequential file, to LOAD a random file
or to execute an OPEN with a file mode
other
than I,
0,
or R.
File already open
A sequential output mode
file
that
is
already
given for a file that is
OPEN is issued for a
open;
or a KILL is
open.
57
Disk I/O error
An
I/O
error
occurred
on
a
disk
I/O
operation.
rt
is
a fatal error, i.e., the
operating
system
cannot
recover
from
the
error.
58
File already exists
The filename specified in a NAME statement is
identical to a filename already in use on ~~e
disk.