Playfields allocating memory, 52 , 61 bitplane pointers, 54 collision, 213 color of pixels, 42-44 color register contents, 92 color table, 46 coloring the bitplanes, 45 , 55 colors in a single playfield, 45 defining a scrolled playfield, 85 defining display window, 57 defining dual playfields, 72 defining the basic playfield, 63 display window size - maximum, 79 ,normal, 58 displaying, 62 dual-playfield mode, 67 enabling DMA, 62 fetching data, 60-61 , 80 forming, 44 high resolution, 41 color selection, 94 example, 66 hold-and-modify, 95 hold-and-modify mode, 86 interlaced, 41 interlaced example, 66 low resolution, 41 colors, 93 memory required, 52 , 76 modulo registers, 62 multiple-playfield display, 89 non-interlaced, 42 normal, 42 pointer registers, 54 , 61 , 74 priority, 210 register summary, 89 scrolling - horizontal, 82 ,vertical, 81 selecting bitplanes, 48 setting resolution mode, 49 specifying modulo, 60-62 , 73 specifying the data fetch, 76 with external video source, 89 with genlock, 89 with larger display memory, 73
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