Appendix D. Basic Error Messages And Operator Recovery - IBM 5110 Basic Reference Manual

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Appendix D. BASIC Error Messages And Operator Recovery
The following list contains all the system error codes. Any detected error will
deactivate keys
011
the keyboard and cause the display screen to flash. To stop
the flashing display, press the A TIN key. Error codes below 100 are I/O
errors and are displayed as a three-digit message, followed by a device
identifying character (E for tape, D for diskette, or 5 for the printer).
The device identifying character is followed by 80 (built-in tape or diskette
drive 1), 40 (auxiliary tape or diskette drive 2), 20 (diskette drive 3), or 10
diskette drive 4).
You can recover from each execution error with one of the following
procedures labeled
0, G, G
or G):
OEnter 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. Use
this recovery for errors that occur during program execution.
GEnter GO END to end the program or GO to continue.
G
Enter GO or GO END to end the program.
G)Correct the statement or command in the input line, then press the
EXECUTE key. Use this recovery for errors that occur during command
or source input.
Note that if errors are detected during execution of a program involving tape or
diskette operations, you should enter GO END to ensure that files are prop~rly
closed.
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.
BASIC Error Messages And Operator Recovery 223
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