Background color, 46 
Barrel Shifter, 179 
BBUSY, 222 
Beam comparator, 124 
Beam position, --> 
Beam position counter, 216 
BEAMCON0, 298 , 305 
Bitplanes, --> 
Blitter, --> 
Blitter Busy, 186 
Blitter registers - in line-drawing mode, 189 
Blitter shifting, 179 
BLTAxWM, 180 
BLTCON0, --> 
BLTCON0L, 298 
BLTCON1, --> 
BLTEN, 222 
BLTPRI, 222 
BLTSIZE, 169 , 171-173 , 186-187 , 191 , 308 
BLTSIZH, 298 
BLTSIZV, 298 , 308 
BLTxDAT, 170 
BLTxMOD, 172 
BLTxPTH, 170 , 298 
BLTxPTL, 170 
BPL1MOD, 62 , 64 
BPL2MOD, 62 , 64 
BPLCON0, --> 
BPLCON1 - setting scrolling delay, 85 
BPLCON2, --> 
BPLCON3, 298 
BPLCONx, 90 , 307 
BPLEN, 222 
BPLxMOD, 84 , 91 
BPLxPT, 91 
BPLxPTH, 52 , 54 , 61 , 74 
BPLxPTL, 52 , 54 , 61 , 74 
BPUx, 48 , 87 , 90 
Bridgeboard, 7 
BZERO, 222 

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