28
Program
file
"PLAYER"
10
REM
CELLO
PLAYER
20
MUSI
C
M1$, M2$,
M3$
30
PRI
NT"OK7"
40
E
NO
On slave disk in drive number 2
First,
"COMPOSER"
is
within text area and
is
executed.
Text
area
~
Dr:ve
File
Corn oser
2
"PLAYER"
"PL:'{'y
THE
CELLO"
The text
is
first shunted to the disk in
FDl
taking
DIR
by the SWAP command of line
number 60, and the area
is
made NEW.
r----------,~r-l~lr(C~O-M-P-O~SE~R~)1
NEW I I 2 .
"PLAYER"
.
1--
___
--'
Next, BTX "PLAYER"
is
overlaid and executed. The melody
is
played.
Text
"PLAYER"
At the end, the shunted COMPOSER
is
reset and says "VERY
GOOD."
Reset
r-1-!-·C-~-M-PO--SE-R-
..
-'r1r--r-I,,-p-LA-Y-E-R-
..
...,:
I
~~~~e~OOD
..
1.8 Reserved Words
The DISK BASIC text
is
composed of reserved words, also called key-words, the
operand, separator and data. The
DISK BASIC the reserved words, which are special
words to execute certain determined functions, and commands, statements and
functions are appropriate to these words.
Because the reserved words are certain words used in order to execute special
commands, the programmer cannot use them as names of variables, arrays, etc. Next
page shows a listing
in
alphabetical order of all
of
the DISK BASIC reserved words.
(The numbers to the right
of
the reserved words indicate the reference page.)
When there
is
a (MZ) notation, refer to the Personal Computer OWNER'S
MANUAL or to the DISK BASIC SUMMARY of this manual.
To Next Page
Loading...
