Texas Instruments TI-99/4A - Page 104

Now type the word RUN.
SCREEN 1
Then press the ENTER key. What's the result of
your program?
SCREEN 2
Your computer takes off, rapidly showing the
numbers across the screen from top to bottom.
When you're tired of watching your computer
repeat this mindless task, try typing a letter or
number on the keyboard. Trypressing the space
bar. Try typing STOPor ENOUGH or any word
you like. What happens?
Absolutely nothing! Your computer is ignoring
you as it busily prints rows of numbers on the
screen. How can you get the computer to stop
this operation?
You could pull the plug out of the wall outlet,
but it's not necessary to take such drastic action.
It's times like these when the CLEAR key comes
in handy. Hold the FUNCTION key down and
press the 4/ $ key. The computer will beep, and
your screen will show
* BREAKPOINT AT 20.
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