Atari 800 Basic Reference Manual

E
Editing, st:reen, 13 GOTO, 17
Editor, Screen, 24
with conditional branching, 17
END, 9 GRAPHICS, 45
before subroutine, 7
Graphics
End of file, 14 Modes, 46-47
Error messages, B-1 through B-3 Statements, 48
Escape key, 5 COLOR, 48
with Control Graphics Symbols, F-1
DRAWTO, 49
EXP, 33 GET, 45
exp, 5 GRAPHICS, 48
Exponentiation symbol, 6
LOCATE, 48
Expression, 1
PLOT, 49
Arithmetic (see aexp)
POSITION, 49
Logical (see lexp)
PUT, 49
String (see sexp)
SETCOLOR, 50
F filename, breakdown, 27
XIO (Fill), 54
Graphics Control Characters, 56
filespec, 5
H
Usage, 26, 27
Harmony, 57
Fill (XIO), 54
Hexadecimal
FOR/NEXT, 15
/
Decimal Conversion Program, H-18
building arrays and matrices, 42
Hexcode Loader program, 64
with STEP, 15
I
without STEP, 15
INPUT, 25
FRE, 35
Input/Output Commands, 23
Function, 1
CLOAD,
24
Arithmetic
CLOSE, 27
ABS, 33
CSAVE,
24
CLOG, 33
DATA, 28
EXP, 33
DOS, 25
INT, 33
ENTER,
25
LOG, 34
GET,
28
RND, 34
INPUT, 25
SGN, 34
LOAD,
26
SQR, 34
LPRINT, 26
Built-in, 7
NOTE, 26
Derived, E-1
OPEN, 26
Library, 33
POINT,
28
Special Purpose, 35
PRINT, 3, 5, 14, 26
ADR, 35
PUT,
28
FRE, 35
READ,
28
PEEK, 35
SAVE,
29
POKE, 35
STATUS,
29
USR,36
XIO, 29
Trigonometric, 34
Input/Output Devices
ATN, 34
Disk.
Drives (D:), 24
cos, 34
Keyboard (K:), 23
DEG, 35
Line Printer (L:), 23
RAD, 35
Program Recorder (C:), 23
SIN, 35
RS-232
Interface (R:), 24
Screen Editor (E:), 24
G Game controllers
TV Monitor (S:), 24
Keyboard, 59
INT, 33
Joystick, 59
Internal pointer for DATA, 21
Paddle, 59
Input/Output Control Block, 23
Video Graffitti program, H-12 through H-13
Inverse Key, 5
Game controller commands
Invisible graphics cursor, 48-49
PADDLE, 59
IOCB (see Input/Output Control Block)
PTRIG, 59
J
STICK, 59
Joystick Controller, 59
STRIG, 60
GET,
28,49
K
Keyboard (K:), 23
GOSUB/RETURN, 16 ,2 1
Keyboard Controllers, 59
118 Index

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