williams-et-al-1983-apple-ii-computer-graphics

84 -APPLE II COMPUTER GRAPHICSget there? The chart below takes the values that you POKEd and shows thecorresponding bit patterns and effects.VALUEBIT PATTERN DOT(S) ON1 0000 0001 Row 02 0000 0010 Row 13 0000 0011 Row 0 and Row 1Figure 9-1. Bit patterns and effects.When the dots were turned on singly, they displayed their respectivecolors, but when they were both on they displayed white. Any "on" dotnext to another "on" dot will display white. Plotti ng one dot under orover another has no effect on the color.Haw Do Yau Like Them Apples?To practice with Hi-Res colors, we will plot the apple given in Figure9-2. The figure has already been sectioned into the nine boxes requiredto display it, and Figures 9-2A through 9-'-21 show the conversion fromdot patterns to decimal values for each of the sections.Ac•• •••••••F•G H IFigure 9-2. Hi-Res apple.Except for the stem, which will be white, the grid for the apple is composedof dots in every second column. That pattern is necessary since