Commodore VIC-20 Programmer's Reference Manual page 304

READ statement 31. 81
Register, 126
Relational operators, 62r 6<l
REMark statement. 31. 80
Reserved WOfds. 60. 120
Reset, 243, 4
RESTORE siatement, 32
Relurn keyr 73
RETURN statement. 32
Reversed characters. 29. 85. 217, 239
RIGHTS function. 47
RND function. 47
ROM. 109. 114. 115
Rounding numbers, 54
Rows, video. 215
RS-232 interface. 251
RUM command. TO
RUN/STOP RESTORE, 4, 25
S
SAVE command, 10
Schematic [inside back cover)
Scientific notation. 56
Screen & border colors, 265
Screen display codes, 267
Screen editing. 73
Screen formatting, 201
Screen memory location, 215. 270
Screen RAM. 115
Serial bus. 234
SGN function, 48
Shift register. 221
Shortening programs. 79
SINe function, 48
Sound commands. 96
Sound, programming. 95t 216
Space. 74. 81
SPC function, 48. 81
Speakers. 95
SQR luncfion, 49, 91
ST numeric valueh 50
Stack. 133. 141
Stack painter. 127, 134
Start of text. 119; of memory, 124
Statements. BASIC, 14
Status lunctjon, 49
Status register. 126
STOP command, 33, 4
STRS function. 50
String comparisons, 70
String operations. 57, 70
String variables, 57
Subroutines. 138-9
Subtraction. 62
Super expander. 94
3YS statement, 33
System dock. 204
System overview, 109
T
TAB function, 51.81. 121
Talking VIC. xiv
TAN function. 51
T| vsnab!e, 52
TIS variable. 52. 77, 179
Time, setting VIC cfock, 52
Tjmer, 220
Top of memory, 119
True/fatse lestingH 65h 68
U
Upper/lower case. 115
USR function, 52
User defined function, 52
Useful memory locations, 178
User port. 229
User program, memory location. 119
V
VALue function, 53
Variables. 58. 80
Variables, extended names, 60
VERIFY command, 12
VersatrEe interlace devices, 109.111.
21a
Vertical screen origin, 214
VICMON, 127, 135. 137
VICTIPs. 85, 96, 103. 105
Video interface chip, 116, 212
Volume, 95
W
WAIT statement. 34
Warm starl. 4
White noise generator, 104
Writing machine codeH 133
X Index register, 126
Y index register. 126
Zero page, 133
I
I
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