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COMPUTE!'s
THIRD BOOK
OF
2QM~i~!~~:1:ublications,lnc,.
Greensboro, North Carolina
Atari is a registered trademark of Atari, Inc.
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The following article was originally published in COMPUTE! Magazine, copyright 1981,
Small System Services, Inc.:
"Blinking Characters" (December)
The following articles were originally published in COMPUTE! Magazine, copyright 1982,
Small System Services, Inc.:
"Machine Language Sort" (March)
"Elementary Numbers" (October)
"The Atari Wedge" (November)
"Purge" (November)
"Atari PEEK and POKE Alternative" (December)
"CaICaJc" (December)
The following articles were originally published in COMPUTE! Magazine, copyright 1983,
Small System Services, Inc.:
"Atari Exponents" Oanuary)
"Automate Your Atari" Oanuary)
"The Atari Cruncher" (February)
"SuperFont Plus" (February)
"16-Bit Atari Music" (March)
"Scriptor" (April)
"Atari Starshots" (May)
The following articles were originally published in COMPUTE! Magazine, copyright 1983,
COMPUTE! Publications, Inc.:
"Using the Atari Timer" Oune)
"Laser Gunner II" Ouly)
"Circles" Ouly)
"Castle Quest" Ouly)
"Atari Sound Experimenter" Ouly)
"Atari Verify" (August)
"SpeIJing Quiz" (October)
"String Arrays In Atari BASIC " (November)
Copyright 1984, COMPUTE! Publications, In c. AIJ ri ghts reserved.
Reproduction or translation of any part of this work beyond that permitted by Sections 107
and 108 of the United States Copyright Act without the permission of the copyright owner
is unlawful.
Printed in the United States of America
ISBN 0-942386-18-3
10 9 8 7 6 5 4 3 2
COMPUTE! Publications, Inc., Post Office Box 5406, Greensboro, NC 27403, (919) 275-
9809, is a subsidiary of American Broadcasting Companies, Inc. , and is not associated
with any manufacturer of personal computers. Atari is a trademark of Atari, Inc.
ii
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Contents
Foreword ....... . . .. ................ . ..... . ........ .. .... v
Chapter 1: Programming Hints . . . . . . . . . . . . . . . . . . . . . . . . 1
Exponents
Matt Giwer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Reading the Keyboard Codes
Orson Scott Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Using the Atari Timer
Stephen Levy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 22
Blinking Characters
Frank C. jones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 27
String Arrays
Stephen Levy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 31
Chapter 2: Sound. ............ .. .... . .... ......... ..... . 35
Sound Experimenter
Matt Giwer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
16-Bit Music
Fred Tedsen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 45
Chapter 3: Applications and Education .... . ... . . ..... 53
Beginner's Keyboard
Marty A lbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 55
Spelling Quiz
Edward Perrin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 57
Elementary Numbers
Stephen Levy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 66
Standings
Dan and Philip Seyer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 74
CalCalc: Computerize Your Diet
Charles Brannon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 87
Castle Quest
Timothy G. Baldwin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 94
Scriptor: An Atari Word Processor
Charles Brannon . . ... .. . ........... .. ........... . . . .. 102
Chapter 4: Graphics . ........... . .. . . . ..... . ..... ...... 125
SuperFont Plus
john Slaby and Charles Brannon . ........... . ... . .. . ..... 127
Super TextPlot
Donald L. Vossler . .............. .... . ... ... . ... . .... .. 142
Circles
jeffrey S. McArthur . ............................. . .... 153
iii
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