Atari 400 User Manual

CHAPTER 5.
AlARI BASIC REFERENCE GUIDE
This chapter provides descriptions and examples of the correct
syntax for Atari BASIC.
Each of the reserved words are listed in alphabetical order , along
with an appropriate abbreviation , if applicable.
The following notation will be used to describe the
configuration of each of the commands, statements, or
functions.
1. Capitalized words are keywords.
2. Items enclosed in brackets [ 1 are optional.
3. Ellipsis ( . .. ) represents repetition.
4. Punctuation (except brackets) must be included as shown .
5. The following symbols will be used :
LN Line number
EX Algebraic or logical expression (i.e. X>5, 3 + X,
X = 7)
X, Y, Z Numeric variable name
X$, Y$, Z$ String variable name
a, b, c Any number or numeric expression
a$, b$, c$ String value

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)