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PR INT "O";<br />
GOTO 65<br />
If you wish to change a switch setting · and then obtain its binary<br />
change line 10 to:<br />
whenever you wish to display the binary value of the logic<br />
setting at the input port, simply depress the RETURN key<br />
the Apple keyboard. Of course, the switch settings are already in<br />
format, so the correlation between the displayed binary value<br />
individual bits at the input port should be easy.<br />
Do not remove the circuit from your breadboard, and do not tum<br />
the power. Both the program and the circuit will be used in the<br />
experiment.<br />
Purp@$®<br />
IEXf'ERIMIENi NO. 5<br />
MIJl.TIBYTE INPUT PORTS<br />
The purpose of this experiment is to show you how multiple bytes<br />
information may be input and processed by a BASIC program.<br />
all input devices transfer only one byte of information to the<br />
computer. Some devices may require 9 or more bits. In this<br />
will simulate two input ports through the use of the<br />
port was constructed in Experiment No. 4. Refer to Exper-<br />
No. 4 for construction details of the input port. We recom<br />
' iJucu.u that you work through Experiment No. 4 before proceeding<br />
this experiment, if you have not already performed it.<br />
If you do not have an input port connected to your Apple comwe<br />
refer you to Experiment No. 4. The circuit developed in<br />
experiment must be used.<br />
In handling multibyte data, the Apple must be programmed so<br />
that the various bytes are ordered from most-significant to least-sigbyte.<br />
In this experiment, we shall use byte "M" as the mostbyte<br />
( MSBY) and "L" as the least-significant byte<br />
) . Since the Apple will interpret 8-bit values as decimal numbetween<br />
0 and 255, can you suggest an equation or series of
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