Sharp MZ-800 User Manual

3.3. Writing a Simple Program
Start up the BASIC interpreter following the procedures described in Section 2.1.
BASIC interpreter 1Z-016 VX.XX
Copyright(C) 1984 by SHARP CORP.
XXXXXbytes free
Ready
.
(blinking)
Type the following characters.
10 CLS
Press the [CR] key. CLS is a statement which erases all the characters from the screen. However, the
computer does not act on the statement immediately as in the interactive mode. This is because we
are now writing a program, which causes the BASIC interpreter to store the statement in memory rather
than execute it immediately. After you input the statement, the cursor blinks at the beginning of the
line below ‘10 CLS” as shown below:
10 CLS
a
When a number precedes a statement, the BASIC interpreter stores the statement in memory. The number
preceding the statement is called the line number, and when many statements are stored in memory,
the line numbers indicate the order in which the statements are interpreted and performed by the com-
puter. Type the following characters then press the key.
RUN
All characters will disappear from the screen, RUN is a command which orders the BASIC interpreter
to interpret into machine language instructions all the statements stored in memory. The statements
are interpreted in ascending order of the line numbers and given to the computer. The CLS statement
is still in memory. You check this by typing the following:
LIST {cR)
CR) indicates the |CR | key has to be pressed. The following display appears:
3-4

Sharp MZ-800 Specifications

General

Brand	Sharp
Model	MZ-800
Category	Desktop
Language	English