Commodore Amiga - Page 316

names of registers, 35
sprites, 127-9
Color selection
in high-resolution mode,. 90
in hold-and-modify mode, 89
in low-resolution mode, 88
COLORx,35
Comparator,
121
Con troller port
joystick,
217
mouse, 217
trackball, 217
Con trollers
joystick, 220
light pen, 224-6
mouse, 217-9
potentiometers, 224
proportional
joystick, 220-3
paddle, 220-3
registers,
223
special, 226-7
types, 6
typical connections, 222
COP1LCH,13
COP1LCL,13
COP2LCH,13
COP2LCL,13
COPCON,15
COPJMP1, 14
COPJMP2,14
Copper
affecting registers, 14
bus cycles used, 9
comparison enable,
21
control register, 14
danger bit (CDANG),
15
features, 8
horizontal beam position,
12
in interlaced mode, 22
in memory operations, 9
in vertical blanking interrupts, 210
instruction lists,
15, 17
instriI ctions
description, 9
MOVE, 9
ordering, 16
SKIP,
20-1
summary, 25
WAIT, 11, 19, 21
interrupt, 210
interrupting the
68000, 24
jump strobe addresses, 14
location registers,
13, 19, 21
loops and branches, 21
MOVE instruction, 9
SKIP instruction,
20-1
starting, 14, 19
stopping, 19
vertical beam position, 12
WAIT instruction, 11, 19, 21
with the blitter, 23
Coprocessor
(see Copper), 7
Copying data, 167-8
Data-fetch
high-resolution,
51
in basic playfield, 49-51
in horizon tal scrolling, 76
Data-fetch start
normal, 49
Data-fetch stop
normal,
49
DDFSTOP, 49, 72, 76
DDFSTRT, 49, 72, 76
Decibel values,
160
Disk
8520 ports, 228
control, 228-9
control register,
233
controller, 5, 227-235
data buffer, 232
data pointer registers, 230
data transfer, 230
DMA,230
DMA buffer,
235
drives, 5
input stream synchronization register,
Index-3