Atari 130XE

E
END, 56 , 65, 66
Enhanced Cartridge Interface
(ECI), 2
erase
computer's memory, 35
program lines, 38
screen,
31
spaces and lines, 32
Error message, 29 , 35, 37-38, 44, 46,
56, 68
Escape key,
14, 34, 40
expansion (see ECI)
exponent, 47-48
F
FOR,58
FOR-NEXT, 57-63
nested FOR-NEXT loops,
62
with SOUND, 66, 68
FRE,42-43
frequency, 65
G
garbage error, 37
GOSUB-RETURN, 68
GOTO, 41, 46, 55, 56
to maintain graphics screen
display,
72
with SOUND, 66
graphic symbols, 17, 30-31, 40
graphics capabilities, 68-76
graphics modes, 68
H
mode 0, 69, 72
mode 1, 70-72, 73
mode 2, 70-72, 73
mode 3, 73-75
mode
5, 75-76
mode
7, 75-76
Help key,
9,11,14,34
IF-THEN, 52, 55-57
increments
in counting loops, 59-60
infinite loops, 41, 50, 55, 56
INPUT, 43, 44, 53, 56
inserting
blank lines,
32
blank program lines, 38
blank spaces, 31-32
program lines, 36
Insert key, 15, 16,
31, 32
installation of your computer, 5-8
instruction line
limit,
29, 39
numbering,
35 , 36
INT, 51
international characters, 19
Inverse Video,
33 , 40
J
to change colors in graphics
mode
s, 71 , 73
to test keyboard, 11
joystick, 26
K
Keyboard Test, 11
keys, descriptions of, 13-16
L
Left Arrow key, 16, 31 , 48
line break
s, 39
line numbering ,
35 , 36
LIST, 35 , 36
logical line, 39
loop
counting , 57-63
delay, 61-63
FOR-NEXT, 57-63, 66, 68
GOTO, 41,46,55,56,66,72
infinite, 41 , 50, 55, 56
lowercase, 29-30
to change colors in graphics
modes,
71, 73
luminance, 69, 70
M
math functions
addition, 48
division, 49
multiplication, 49
order of execution,
49-50
subtraction, 48
math programs,
53
memory, 9-10, 23, 35, 36, 42-43
Memory Test,
9-10, 11
minus sign , 47, 48
modem,
26
130