8-4
u
When you are inputting a program ——
2
(BASE)
*
* Programs input after pressing
2
(BASE) are indicated by
B
to the right of the file name.
• {
TOP
}
/
{
BOTTOM
}
/
{
SEARCH
}
• {
MENU
}
• {
d~o
} ... {decimal}/{hexadecimal}/{binary}/{octal} value input
• {
LOGIC
} ... {bitwise operator}
• {
DISPLAY
} ... conversion of displayed value to {decimal}/{hexadecimal}/{binary}/{octal}
• {
A
⇔
a
}
/
{
SYMBOL
}
• Pressing
!
J
(PRGM) displays the following program (PRGM) menu.
• {
Prog
} ... {program recall}
• {
JUMP
}
/
{
?
}
/
{
^
}
• {
RELATNL
} ... {conditional jump relational operator menu}
• {
:
} ... {multi-statement command}
• Pressing
!m
(SET UP) displays the mode command menu shown below.
• {
Dec
}
/
{
Hex
}
/
{
Bin
}
/
{
Oct
}
• Pressing
!
f
(FORMAT) displays the color command menu. For details, see “Using Color
Commands in a Program” (page 8-28).
3. Editing Program Contents
k
Debugging a Program
A problem in a program that keeps the program from running correctly is called a “ bug”,
and the process of eliminating such problems is called “ debugging”. Either of the following
symptoms indicates that your program contains bugs that require debugging.
• Error messages appearing when the program is run
• Results that are not within your expectations
u
To eliminate bugs that cause error messages
An error message, like the one shown to the right, appears
whenever something illegal occurs during program execution.
When such a message appears, press
J
to display the place in the program where the
error was caused. The cursor will be flashing at the location of the problem. Check the “Error
Message Table” (page
α
-1) for steps you should take to correct the situation.
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