Atari 800 User Manual

170 User's Handbook to the Atari 400/ 800 Computers
READ (REA.)
A READ statement is used to assign values to variables. The values
are taken
individually from DATA statements in the order they
appear in the
program .
CONFIGURATION
READ
Data items are assigned
to variables in the order in which they
appear in the program unless a RESTORE statement has been
executed.
The
type of variable in the READ statement must correspond to
the type specified in DATA. A numeric variable can only be
assigned a num eric value. However, a string variable can accept
any type
of characters or none at all.
String variables must be
correctly dimensioned before the READ
statement
for that variable is executed.
A
program must includ e at least as many data items as the
number of variables in its READ statements unless a RESTORE
statement is executed.
EXAMPLE
10 DIM X$(10)
20 READ X,X$
30 PRINT X$,X
40 END
50 DATA 12 , JONES
RUN
JONES 12
The preceding example contains a program that has a READ
statement. First, the string variable X$ is dimensioned . Next, at
line 20, the variables X and X$ are assigned the values from the
DATA statement at line 50. At line 30, the values of the two
variables are displayed.

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