Atari 800 Basic Reference Manual

RESERVED
WORD:
STR$
THEN
TO
TRAP
USR
VAL
XIO
ABBREVIATION:
T.
X.
BRIEF SUMMARY
OF BASIC STATEMENT
Function returns a character string equal to numeric
value given. For example: STR$(65) returns 65 as a
string.
Used with IF: If expression is true, the THEN
statements are executed. If the expression is false, con-
trol passes to next line.
Used
with FOR as in "FOR X = 1 TO 10". Separates the
loop range expressions.
Takes control of program in case of an INPUT error
and directs execution to a specified line number.
Function returns results of a machine-language
subroutine.
Function returns the equivalent numeric value of a
string.
General I/0 statement used with disk operations (see
DOSIFMS Manual) and in graphics work (Fill).
App endix A-5

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