Table of Contents
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Index
68000
bus sharing, 189
instead of Copper, 24
interrupting, 24, 207
normal cycle, 189
synchronizing with the video beam,
205
with special-purpose chips, 4
ADKCON
in audio, 149, 151
in disk control, 233-4
Aliasing
audio, 154
Animation, 172
Area fill, 180-3
Attachment
audio, 150
sprites, 116
Audio
aliasing distortion, 154-7
channels
attaching, 149, 161
choosing, 136
data, 137-8
data length registers, 139
data location registers, 137, 138
data output rate, 140-43
decibel values, 140, 160
D~,
137, 143, 147, 161
equal-tempered scale, 158-9
interrupts, 147, 210
joining tones, 147-8
low-pass filter, 155-7
modulation
amplitude, 149
frequency, 149, 150 , 161
noise reduction, 154
non-D~
output, 157
output jacks, 245
period, 140-43
period register, 143
playing multiple tones, 149
producing a steady tone, 145-6
RF,245
sampling period, 141
sampling rate, 141, 152, 156, 161
state machine, 161-4
stopping, 144
system overhead, 153
volume, 139-40, 160
volume registers, 139
waveform transitions, 152
AUDxLCH, 137
AUDxLCL, 137
AUDxLEN, 139
AUDxPER, 143
AUDxVOL, 139
Background color, 35
Barrel shifter, 177
Beam comparator, 121
Beam position
comparison enable bits, 13
detection of, 205-6
in Copper use, 20
registers, 206
vertical, 12
Beam position counter, 205
Bit-planes
coloring, 44-6
D~,52
in dual-playfield mode, 60
setting the number of, 37
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