Specifications

261
• When using the
ON KEY...GOSUB statement together with block-structured state-
ments (
DEF FN...END DEF, FOR...NEXT, FUNCTION...END FUNCTION,
IF...THEN...ELSE...END IF, SELECT...CASE...END SELECT, SUB...END SUB
and WHILE...WEND), you can nest them to a maximum of 30 levels.
• Specifying 32 to keynumber will be ignored.
Syntax errors:
Run-time errors:
Reference:
Error code and message Meaning
error 71: Syntax error • label has not been defined.
•
label is missing.
•
keynumber is not enclosed in
parentheses ( ).
Error code Meaning
05h
Parameter out of the range
(
keynumber is out of the range.)
07h
Insufficient memory space
(The program nesting by
GOSUB statements is too deep.)
Statements:
KEY, KEY OFF, and KEY ON