.
~*
MIINITOR
1l·OUA~:tc
*
l..OAD
.!.
PL.AY
LZJAOING
\
BASIC
BASIC
INTER~R
U-Ol38
VX
.
)(X
COfYRl"HT
lq83
BY
SHARP
CORP
xxxxx
S'(TE.S
.
READY
'"
ril!l
This completes loading
of
the BASIC program. You can talk
to
the
computer
using BASIC, and the
computer will respond.
1
.3.3
Try Executing a Program
Loading BASIC
into
the
computer
doesn't cause
it
to
do anything; first,
it
must
be given instructions
in BASIC
as
to
what
it
is
to
do. Although
we
will
not
explain
the
instructions
of
BASIC until later, let's
go ahead and
try
executing a BASIC program right now.
Remove the cassette tape from the recorder and turn
it
over so
that
the "B" side
is
up. A sample
program
is
recorded
on
this side
of
the cassette tape. Using the following procedures, load this program
into
the
computer
and execute it.
(1)
After
turning the tape over and reloading
it
into
the recorder, press the REWIND
button
to
rewind it.
Next
, type in
[Q[Q][AJIQ)
and press the I
CRI
key; when the message .!. PLAY
is
display·
ed, press the I
PLAY
I
button
on the data recorder. This begins loading
of
the sample program.
(2) When loading
is
completed, the cassette tape stops, READY
is
displayed on the screen, and the
cursor starts
to
blink again.
(3)
Now
that
the program has been loaded
into
the computer's memory,
try
executing it. This
is
done
by typing in
[B][!l)~
and pressing
the
I
CRI
key.
(4)
Now let's take a peek
at
the program. Hold down the I SHIFT I key and press the I BREAK I
key. This stops program execution and displays the words BREAK and READY, then the cursor
starts
to
blink again.
(5)
Type
in
[11[][§][!]
and press the I CRI key. This lists the lines
of
the program
on
the screen one
after another.
(Output
of
the list can be temporarily stopped at any time
by
pressing the space
bar.)
(6) If
you
wish to resume program execution,
type
in
[B][!l)~
again and
hit
the I
CR
I key.
(7)
If
you
want
to
run a different program, set the cassette tape containing
that
program in the
recorder,
LOAD the program, then RUN it. The previous program is automatically erased from
memory when the new one
is
loaded,
so
the
computer
contains only
the
BASIC language and
the last program loaded.
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