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8. Type
X=l
and press
I
Return
I.
Notice that the llluubers being printed start over with
"1". The live keyboard was used to change the value of "X". and the program used
the new value from the keyboard.
System
Caps
Running
1---
"Program-Status" Indicator
- - - "Run Light"
9. Press
I
Reset
I.
The program stops and the data remains in the printout area, but
the display line is cleared and the message
BASIC Reset
appears at the bottom of
the CRT. Although the clearing of the display line seems like a minor effect, it
indicates an important point.
I
Reset
I
and
I
Stop
I
have different effects on interfaces
and peripheral devices. This aspect of
I
Reset
1
is summarized in the "Reset Tables"
in the "Useful Tables" appendix of the
BASIC Language Reference
and is discussed
fully in the
BASIC Interfacing Techniques
manual.
System
Caps
Idle
J
·
"Program-Status" Indicator
"·---No "Run Light"
------------~
10. Press I
RUN
1 ([ill on an ITF keyboard). Then type
WAIT 5
and press I
Return
I. Notice
that the run light changes to indicate that a keyboard command is being executed
and the printout is delayed for five seconds while the live keyboard command is
processed. Actually, the run light changed when the
X=l
command was executed in
step 8. but it may have happened so fast that you didn't see it.
System
Caps
Command 1 - - - 'Program-Status" Indicator
*
- - - "Run Light"
4-12
Loaning :mn Rllnning Programs
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