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1-22 Operating the TI-80
The TI
.
80 detects any errors at the time it evaluates an expression, executes an
instruction, plots a graph, or stores a value. Calculations stop and an error
message with a menu is displayed immediately. Error codes and conditions are
described in detail in Appendix B.
If the TI
-
80 detects an error, it displays the error screen.
The top line indicates the general type of error, such as
SYNTAX
or
DOMAIN
. For additional information about each
error message, see Appendix B.
¦
If you select
GOTO
, the cursor is displayed at the location
where the error was detected.
Note: If a syntax error was detected in the contents of a
Y=
function during program execution,
GOTO
returns the
user to the
Y=
editor, not to the program.
¦
If you select
QUIT
,
or press
y
.
or
M
, you return
to the Home screen.
To correct an error:
1. Note the type of the error.
2. Select
GOTO
, if that option is available; and look at the
expression for syntax errors, especially at and before the
cursor location.
3. If the error in the expression is not readily apparent, turn
to Appendix B, and read the information about the error
message.
4. Correct the expression.
Error Conditions
Diagnosing an
Error
Correcting an
Error