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

Editoi:(s)Hi-Res, 66, 100Low- Res, 48, 49-50EOR operation, 154, 174Equipment, 1EXEC, use, 57-58Figure(s)digitizing of, 99, 100saving of, 50-51Filename, 56, 57FOR- N EXT loop, 54, 128Functional plotting, 128-1 29Glossary, 181-1 85GOTO statement, 28, 29, 158Graph, graphingcircle graphs, 129-1 32drawing, 128-1 29Graphics, speed and efficiency, 14 7Graphics mode, 31-33, 35, 35fGraphics switch, setting of, 34HCOLOR, 92, 106, 116Hex, see Hexadecimal systemHexadecimal digit, conversion to number,166Hexadecimal numberconversion to decimal, 165writing of, 9Hexadecimal system, 3, 7-8adding and subtracting, 168-1 70binary/hex chart, 8, 9fbinary/hex-examples, 9, 9fconversion of decimal to, 167-1 68conversion to decimal, 9-1 0digits, 9Hi-Res color, 91, 96clarification, 90-91'color bit, 82-84colors available, 93-96dots available, 91-93positions possible, 91program, 84-90Hi-Res graphics, 62, 106display, 68dot pattern, 65, 69-78memory, 6668, 161use, 65Hi-Res graphics editor, 66, 100Hi-Res memory map, 69, ?OfHi-Res mode, 31, 32-33, 35fHi-Res screen, 111clearing of, 73dots avai lable, 91-93positions avai lable, 90text placement on, 112-1 13use. 164HIMEN, 59, 60, 168, 169setting of, 107, 108HUN command, use, 21, 46, 47f, 47Horizontal animation, 140-1 42Horizontal axis, labeling of, 128Horizontal graph, 121Horizontal pre-shift, 152Li ne graph, drawi ng of, 123-1 28Loop, checking of bits, 162Low- Res color codes, 44fLow- Res editor, 48, 49-50Low- Res graphics, 62creating pictures, 44-46use, 43-44memory, 53, 54, 58Low- Res memory map, 41 fLow- Res mode, 31, 32, 35f, 39Low- Res scan, 54f, 55, 55fLow- Res screenmemory, 58placing text labels on, 121Memory, 4, 13, 161changing of, 1 5dealing with, 48-50examining of, 14-1 5Hi-Res, 66-68, 161interpretation of data, 31Low- Res, 53, 54, 58moving of, 17-1 8, 58-61organization of, 15-1 6scanning of, 53-5 5size, 7writing from, 1 6-1 7Memory ad d ress, 7Memory map, 16, 16f, 18, 177f- 179fHi-Res, 69, 80fLow- Res, 41fuse, 40-4 1 , 41 fMemory move, BAS IC, 59f-60fModification, partial, 147-1 49Monitor, 13-14, 15commands, 19use, 14-1 5, 73MOVE command, use, 17, 18, 59Negative address(es), 173-1 74Nibble, 9Number, digit position within, 165"Number crunching," 119Number table, 123, 124Numeric codes, assigning of, 32Offset, 105"P" key, 27, 50Paddle 0, USj!, 154-1 55, 159PEEK function, 34, 37187