Automatic Program In Itiation; Arun; Comparison Of Initiation Methods - Sharp PC-1500A Instruction Manual

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Return to the RUN mode and begin the program labeled X by typing the month, day, time,
and DEF X:
co
c~
mm rn rn
8
rn m rn rn r WJ rn
This program will set the system clock to whatever time you specify before the DEF keystroke
(see TIME function).
To begin the pro gram labeled
Z
tYPe a day of the week and DEF
Z:
B.
Automatic Program Initiation
Not only may programs be started quickly and easily using the DEF key. but they may be
started totally aut<>matically when you turn the PC-1500A on.
To cause this to happen, you use the ARUN statement. This statement must be the very fi rst
statement in the pr<>gram memory or it will be ignored. In addition, several other conditions are
necessary for the A RUN statemen t to work. These are that the PC· 1500A was tu rned OFF while
in the RUN mode, and that no errors arc detected as the PC· 1500A is turned ON.
The folloi.vi ng program uses the ARUN statement to greet the computer operato· r :
Program Listing:
10 ARUN
30
CLS
50 BEEP
5, 50
70
PRINT 'WELL, HI TH ERE!"
90
END
C. Comparison of Initiation Meth<>ds
Although the various methods of beginning a program superficially achieve ttrn same result,
their internal opeiration differs. In order to exploit these differences to your advantage it is
necessary to discus:s the storage of data w ithin the computer. Also included is a section comparing
the various internal preparations which are made by the PC· 1500A before running a program.
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