Atari Sound and Graphics - download pdf or read online

By Herb Moore

ISBN-10: 0471095931

ISBN-13: 9780471095934

Publication by means of Moore, Herb, decrease, Judy, Albrecht, Bob

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RUN it again to make sure you rea lly saw and heard what you thought you saw and heard! SOUND AND GRAPHICS TOGETHER Here's what ought to be happenin g: • Wh il e the no t e is playi ng: When t he note stops: READY • The word READ Y and the cursor appear in the text window when the program ends . 45 46 ATARI SOUND AND GRAPHICS Now the comple te listin g should look like this: 1 REM * * -1(. SOUND AND COLOR GRAPHICS 3 COLOR 1 PLOT 10 , 10 10 20 30 200 210 REM ** VOICE 0 PLAYS MIDDLE C SOUND 0 , 121, 10 , 10 300 REM ** PAUSE-NOTE 310 FOR P = l TO 500 320 NEXT P 400 410 420 ON REM ** ERASE DOT COLOR 0 PLOT 10 , 10 INPUT STATEMENTS What if you want to change the note this program plays without typing line 210 over again?

Just add: 34 COLOR 2 31 32 ATARI SOUND AND GRAPHICS LIST the program again. It should be: 10 GRAPHICS 3 20 COLOR 1 30 PLOT 10,5 32 DRAWTO 10, 10 _____ 34 COLOR 2 - - - - - 35 PLOT 14,4 40 END Try adding another color (0-3 ) and a few DRAWTO statements of your own between lines 35 and 40 . REM STATEMENTS As programs begin to get longer and more involved , you'll need ways to keep track of what you are doing. A us eful tool for marking different parts of a program is the REM statement. The REM statement does not affect how the program runs.

Mocle Number 3 4,5 6,7 Number of Column s Graphi c Positioll s Row s Tex t W ind ow 40 80 158 20 40 80 4 I nes 4 Illes 4 Illes PICTURE YOURS ELF DOING GRAPHICS Although some graphics mod es have the same numb er of co lumns and rows , th e colors th ey are able to make are different. These differenc es dep end upon some other commands which yo u hav e not yet learned. In Chapter 7 you w ill learn about the SETCOLOR command which enab les you to create a variety of co lors for the figure, the background screen , and the text w indow.

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Atari Sound and Graphics by Herb Moore

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