Atari 400 User Manual

Atari BASIC Reference Guide 177
The volume controls the loudn e ss of the voice indicated in
SOUND . volume ranges from 0 (no sound) to 15 (highest
volume) .
An Atari BASIC statement with a volume of 0 will turn off the
sound. Sound can also be turned off by executing an END, RUN,
NEW, DOS , CSAVE, or CLOAD . If the System Reset key is
pressed, sound will be turned off . However, if the Break key is
pressed, sound will not be turned off.
SQR
SQR returns the square root of its argument.
STATUS
CONFIGURA TlON
SQR (a)
EXAMPLE
10 X = 49
20 PRINT SQR (X)
RUN
7
STATUS
returns a code which identifies the last input / output
operation undertaken on the channel specified.
CONFIGURA TlON
STATUS #channel, X
The status code will be returned via the numeric variable
indicated. The status codes are listed in Table 5-3.
EXAMPLE
100STATUS#5,ST4
200 PRINT ST4
RUN
130

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)