Atari 400 Basic Reference Manual page 121

Keyboard Controller Program, H-14
Keys
Special Function
ATARI, 5
BACK SPACE, 6
BREAK, 6
CAPS!LOWR, 5
CLEAR, 6
DELETE,6
ESCAPE, 5
INSERT, 6
RETURN, 6
SYSTEM RESET, 6
TAB, 6
Editing
CTRL (Control) Key, 13
SHIFT key, 13
Cursor Control, 14
Down arrow, 14
Left arrow, 14
Right arrow, 14
Up arrow, 14
Keywords
BASIC, A-1 through A-5
L
LEN, 38
LET,2, 3,10
Letters
Capital (upper case), 3
Lower case, 3, 47
lexp, 4
Light Show Program, H-8
Line
Format, 3
Logical, 2
Numbers, 3
Physical, 2
lineno,5
LIST, 10
LOAD, 26
Load program from cassette tape,
24
LOCATE, 48
LOG, 34
Loops
Endless, 17
Nested, 15
lop, 4
LPRINT, 26
before CSA VE, 24
Luminance, 50
M
Mandatory# symbol, 26, 27
Margins
Changing, 36, 46
Default in mode 0, 46
Matrix, 41-42
Variable, 4
Memory Map, D-1 through D-2
Modes, graphics, 46, 47
Modes, operating
Deferred, 5
Direct, 5
Execute, 5
Memo Pad, 5, 25
Modes, text, 46
Override split-screen, 47
Multiple commands
(see
Command Strings)
mvar, 4
N
NEW, 10
Notations
floating point, 39
in manual, 3
0
ON/GOSUB, 20
ON/GOTO, 20
OPEN, 26-28
Operators, 2
Arithmetic, 4, 6
Binary, 6, 7
Logical, 4, 6
Relational, 7
Unary, 6
Output devices, 23
Oversized programs (see Chaining Programs)
P
Paddle Controller, 59
Parentheses,
Usage, 7, 63
PEEK, 35
Peripheral devices (see Input/Output Devices)
Pitch
Definition, 57
Values, 58
Pixel, 48
Size in modes, 47
PLA, 63
PLOT, 49
POINT, 28
POKE, 35
POP, 20-21
POSITION, 49
Precedence, operator, 7
PRINT, 3, 5, 14, 26
Printer listing, 10
Program continuation,
11
Programs,
Machine language, 67
User, Appendix H
with Hexcode Loader, 65, 66
PUT, 49
Q
Question mark as prompt, 25
Quotation marks, 2
R
RAD, 35
RAM (Random Access Memory), 23
Random Access to disk file, 28
READ, 28
Direct mode, 28
REM, 10
RESTORE, 21
RETURN Key, 6
Return, Abnormal
(see
POP)
Rollover,
Keyboard, 8
RND, 34
Index
119