(
(
Appendix
B.
BASIC Error
Messages
And Operator Recovery
The following list contains all
the
5100 error codes. Any detected error
will
deac-
tivate keys on
the
keyboard and cause the display screen
to
flash. To stop the
flashing display, press ATTN. Error codes below 100 are I/O errors and are dis-
played as 3-digit numbers, followed by three blanks and one
of
the following de-
vice addresses: 500 for
the
printer, E80 for
the
built-in tape unit, or E40 for
the
auxiliary tape unit. Error code
800
is
for
UTI
L
MODE
COM
when the device
is
not
attached. Refer
to
Serial
If
0 Adapter for
other
valid device addresses. Error codes
above
100
are simply displayed
as
3-digit numbers. Unless otherwise specified, you
can recover from each execution error with one
of
the following procedures labeled
~,~,~,or~:
~
Enter GO or
GO
END
to
end
the
program
or
enter GO x
to
continue,
where x
is
the statement number
of
any statement
in
your program.
~
e
CD
e:nter
GO
END
to
end the program
or
GO
to
continue.
Enter
GO
or
GO
END
to
end
the
program.
Correct
the
statement
or
command
in
the input line, then press
e:XECUTE.
Note
that
if errors are detected during execution
of
a program involving tape
operations, you should enter
GO
END
to
ensure
that
tape files are properly closed.
In
this situation, do
not
attempt
a LOAD, MERGE,
or
REWIND operation because
these commands can cause incorrect operation when the program
is
restarted.
If
I/O errors (01-99) occur on a tape file,
the
file
is
automatically marked
not
open
and cannot
be
accessed by GET
or
PUT statements. An
output
file has
not
been
properly closed and may not
be
accessible. GO
END
closes
all
other files.
149
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