Atari 800 User Manual

48 User's Handbook to the Atari 400/ 800 Compute rs
meaning.
100 LET A = 5
200 A = 5
BASIC Variable Names
Atari Basic allows any group of up to 114 characte rs to be used as
a variable name--as l ong as the first ch aracter of the group is a
capital l etter of the alph abet, and as l ong as the variable name
does not duplicate a reserved word (see Appendix B). Examples
of reserved words are :
LET , GOTO , IF , READ, DATA
The following are examples of va lid BASIC var iable names,
A
B23456
TOTAL.DATA
A2
JOHN
N4N
B%
N
while the following are invalid variable name s:
2BB7
lA
PRINT
END
FOR
COS
All of the preceding examp l es of valid vari able names should be
used to represent num e ric data. Variable names can a ls o be used
to repr esent str in g data. These are known as string variables.
String variable names con sist of a va lid vari able name followed
by the dollar sign ($). The following are examp l es of val id string
variable names.
A$
B1P$
A7$

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS