J
Jiffy. See Clock
Joystick controller
K
description,
158-60
finding the position
of
the stick,
160-63
precautions when programming for,
162
sample subroutine for testing,
162
simulating using keyboard (example),
166-69
Kernal subroutine locations,
309
Keyboard, 7-20
L
cursor control keys,
14-19
function keys,
10
LEFf$
function,
114,
374
LEN function,
114,
375
LET statement. See Assignment statement
Line numbers,
58
LIST command,
353
LOAD command,
47,
49, 251,
354
LOG function,
113,
375
M
Memory
map, 295-304
"stealing" from BASIC, 224-26
and VIC chip,
221-23
MEMORY-EXECUTE (disk instruction), 279
MEMORY-READ (disk instruction),
278
MEMORY-WRITE (disk instruction),
277
MID$ function,
115,
376
Modem
connecting,
281
definitions of terms, 282
Multicolor Graphics
"auxiliary" color,
215
character memory and,
214
defined,
214
N
designing multicolored characters,
215-17
forcing the VIC into "multicolor mode",
221
mixing with other types
of
graphics,
221
NEW command, 356
NEXT statement, 92,
346
Numbers
floating point,
60
integers,
63
ranges allowed,
63
roundoff,
61
scientific notation,
61
Index
387
o
ON
statement. See Computed GOSUB, Com-
puted GOTO
OPEN statement, 54, 253,
358
limits on number
of
open files,
268
Operators, 68-76
arithmetic,
69-71
Boolean, 72
defined,68
order
of
evaluation,
71
relational,
72
OR operator, 72
"bit-masking",
211
OVERFLOW ERROR,
63
p
Paddle controller,
164
PEEK function,
no,
373
Players
creating with graphics characters,
174-79
defined,
174
Playfield
defined,
174
POKE statement,
no,
360
POS function,
105,
287,
377
PRINT
statement,
101-06,
127,
177-79,360
commas in,
102,
286
print formatting functions,
104,
287
and "quote mode",
103
semicolons in,
102.
286
using
CHR$
to
PRINT
"special" characters,
128
PRINT# statement, 268-69,
362
Printer
adjusting print head,
38
character sets,
285
CMD
statement for, 55, 284
CLOSE statement for, 55, 284
connecting,
32
double-width characters,
288
graphics characters, 288,
289-91
graphics repeat function,
291
OPEN statement for, 54,
283
paper loading,
35
PRINT
statement for, 54,
283
PRINT
formatting functions for, 286-88
reversed characters,
288
ribbon installation,
35
T-S-4
switch,
35
Program mode,
44
Q
"Quote mode",
42
and
PRINT
statement,
103
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