Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
CLS
Statement
CLS
Clears the screen and returns the cursor to the home position.
Home is Row
0, Column 0, or in other words, the upper left cor-
ner of the screen.
If a viewport is active, CLS clears only the active viewport. To
clear the entire screen, you must use VIEW
to redefine the en-
tire screen before using CLS.
Changing the screen mode with SCREEN
or changing the width
with WIDTH automatically clears the screen.
You can also clear
the screen by typing
[CTRL][T] or [CTRL)[HOME].
Sample Program
540 CLS
550 FOR I = 1 TO 24
560 PRINT STRING$(79,33)
570
NEXT I
580 GOTO 540
~
120

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200