Creative Computing Magazine (July 1982) Volume 08 Number 07
Total Page:16
File Type:pdf, Size:1020Kb
creative computing ® the #1 magazine of computer applications and software In-depth Evaluations: Computer Graphics Features: • Zoom Grafix • Gra Forth • Plotting N-Space Cubes • Quest Super Color Board • Half-toning Digital Images • Talking Games • Snake Byte • Graphics Subroutines for Apple • Apple Pilot • Special Effects • Screen Saver • Cyrillic Editor • 4 Hi-Res Text Generators • Turtlegraphics Interpreter • Printing Lo-Res Graphics The Case Against Pilot • Mona Lisa Meets VersaWriter Columns: Computing in Britain 07 • IBM • Letters • TRS-80 • New Products Logo Ideas • Atari • Legal Forum 'U024"U044 • PET • Book Reviews Verse Weaving *r. o ^ <> V> ' INTRODUCING MICROBUFFER. NOW YOU CAN USE YOUR PRINTER WITHOUT WASTING COMPUTER TIME. Your computer is capable of MICROBUFFER ir(picturedonthe sending data at thousands of left-hand page) is a Centronics- characters per second. But the compatible parallel interface for average printer goes no faster the Apple II computer with up to than 80 characters per second. 32K of onboard RAM for data This means your computer is buffering as well as on-board forced to wait for the printer to firmware for text formatting and finish one line before it can advanced graphics dump send the next. routines. A waste of valuable time. SIMPLE TO INSTALL. MICROBUFFER THE NEW Microbuffer MBP-16K and INCREASES YOUR EFFICIENCY. MICROBUFFER MODEL MBP-16K MBS-8K mount easily in the existing auxiliary slot directly Microbuffer allows you to print is a Centronics-compatible inside the Epson printer. and process simultaneously. parallel interface for your Epson Microbuffer II, being slot- No waiting! printer with 16,384 bytes of on- independent, will fit into any slot board RAM for data buffering. MICROBUFFER directly inside the Apple ACCEPTS PRINTING DATA except zero. AS FAST AS YOUR MICROBUFFER COMPUTER CAN SEND IT. FROM PRACTICAL PERIPHERALS. Microbuffer first stores the data When you think of how much in its own memory buffer and then takes control of your printer. time Microbuffer will save, can This frees the computer for more you afford not to have one? productive functions. Additional output may be PRACTICAL PERIPHERALS, INC. dumped to the buffer at any time 31245 LA BAYA DRIVE and it will be printed in turn. WESTLAKE VILLAGE, CA 91362 MODEL MBS-8K" is a full-featured Microbuffer — a must for any (213) 991-8200 RS-232C serial interface for your program that requires printed Epson printer with both hard- CIRCLE 216 ON READER SERVICE CARD output. ware and software (x-on/x-off) handshaking, baud rates from 300 to 19,200 and a 8,192-byte RAM buffer. The Newest & Most Astounding Arcade Game that TALKS has Just Reached Planet Earth: BEST SELLER CZ) iwiii'haiiVN^Flia Ordering, inl .lines: Super Nova, Galaxy Invasion, Attack Force, Cosmic Fighter, Met. 2, and Robot A' 1 CIRCLE 164 ON READER SERVICE CARD . J * i* I I H/ . " ws & software in this issue 1 00w Half-toning Digital Images Browning A tutorial "| "| A Graphics Package for the Apple Hansen A collection of graphics subroutines 1 20 Cvr""c Anyone? Mangasarian Character editor for the Apple evaluations & profiles 1 36 Prin,in 9 Low-Res Graphics Navarro The uesl Super Color Board Repsher Hturtle -j 2 Q 1 40 Evans Color graphics for S-1 00 computers A turtlegraphics interpreter in Applesoft Snake Byte Pl0,,in N-Space Cubes OT Lubar "j 48 9 Clark Beware the perilous plums Making order out of chaos Oft Talking Games for the TRS-80 Linzmayer 1 62 Screen Saver Gamble w Robot Attack and Forbidden Planet 1 66 Vorse Weaving Denison 35 Zoom QreUx Archibald A challenge for all ages w Blowing up the screen 37 Special Effects Flynn Awaken the artist in your Apple departments 43 Four Hi-Res Text Generators Berentes A comparison 6 Input/Output Readers GraForth Coffey 59 1 1 Notices Fee A graphics language that's downright Forthright Tn* °,ner Slds Kewney A te pl,ot Smith 1 85 62 PP A look at computing in Britain 0utD0St: "| 88 Atori Small & Small Languages for the Atari 1 96 ,BM ,m"068 Fastie articles New products, software submission and more Persona' Electronic Transactions Yob 208** 7Q The Case Against Pilot Merrill PET disks The pros and cons of authoring systems 216 TRS "80 Strings Gray 7g Logo Ideas Lawler TRS-80 repairs, reviews and Screensaver Bugs and variables 224 Sottware Legal Forum Novick 80 Cower Story Wright Politics and patents 83 Loopholes Payack 228 New Products Staples Oft An Art Medium in Lights Miller 232 Book Reviews Gray **° Mona Lisa meets Versawriter Q2 The Graph Paper Lubar Part one: introduction and explanation July, 1982 Art and the Computer Friedman Q7 Volume 8, A computer graphics course Number 7 Creative Computing (ISSN0097-8140I is published monthly by Ahl Computing. Inc . a subsidiary of Ziff-Davis Publishing Company David Ahl. President. Elizabeth B Staples. Vice President. Selwyn Taubman. Treasurer. Bertram A Abrams. Secretary PO Box 789-M Mornstown N J 07960 Second Class postage paid at Lincoln. NE 68501 Copyright ©1982 by Ahl Computing. Inc All rights reserved Editorial the covep offices located at 39 East Hanover Ave . Morns Plains. NJ 07950 Phone (201 ) 540-0445 Domestic Subscriptions 12 issues S24 97. 24 issues J43 97 36 issues $57 97 The cover is a computer graphic design by Walter Wright. Send subscription orders or change of address (PO Form 3579) to Creative Computing. PO Box 5214. Boulder. CO 80321 Call 800-631-8112 toll-free See the Cover Story on page 80 for more information on his (in New Jersey call 201-540-0445) to order a subscription technique Creative Computing is printed by Mid-America Webpress. Lincoln. NE 68501 BPA (Selected Market Audit Division! membership applied for November 1981 July 1982 * Creative Computing Starr advertising sales foreign customers Pubhsher/Editor-in-Chief David H. Ahl Foreign subscribers in countries listed below Advertising may elect to subscribe with our local agents Editor Elizabeth Staples Coordinator Ann Magee using local currency. Of course, subscriptions may also be entered directly to Creative Managing Editor Peter Fee Creative Computing Computing (USA) in US dollars (bank draft or Ziff-Davis Publishing Company Technical credit card) All foreign subscriptions must be Editor Michael Coffey Park Ave. One prepaid. Associate Editor John Anderson New York, NY 10016 Many foreign agents stock Creative Computing (212)725-3446 magazines, books, and software. However, Contributing Editors Dale Archibald please inquire directly to the agent before placing Charles Carpenter Western States an order Again, all Creative Computing products Thomas W. Dwyer Jules E. may be ordered direct from the USA— be sure Will Fastie Thompson, Inc. to allow for foreign shipping and handling Stephen B. Gray 1290 Howard Ave., Suite 303 Glenn Hart Burlingame, CA 94010 CANADA Surface Air Stephen Kimmel (415)348-8222 1-year $2997 n/a Ted Nelson In Texas call (713)731-2605 2-year 5397 n/a Harold Novick 3-year 7297 n/a Peter Payack David Small Southern California AUSTRALIA M *A Alvin Toffler Jules E. Thompson, Inc. 1 -year 32 92 C. Barry Townsend 2560 Via Tejon 2-year 58 n/a Gregory Yob 3-year 80 n/a Palos Karl Zinn Verdes Estates, CA 90274 ELECTRONIC CONCEPTS PTY . LTD (213)378-8361 Attn Rudi Hoess Editorial Assistant Andrew Brill Ground Floor 55 Clarence St Mid-Atlantic, Northeast Sydney. NSW 2000. Australia Secretary Elizabeth Magin CEL Associates, Inc. ENGLAND 27 Adams Street E £ Production Coordinator Christina L. Erickson 1-year 15 30 Braintree. MA 02184 2-year 28 n/a Assistant Art Director Chris DeMilia (617)848-9306 3-year 40 n/a CREATIVE COMPUTING Artists Diana Negri Attn Hazel Gordon Candace Figueroa Midwest 27 Andrew Close Carol Ann Henderson Mike Kleeblatt Stoke Golding. Nuneaton CV12 6EL Eugene Bicknell The Pattis Group 4761 W. TouhyAve. Typesetters Karen Brown GERMANY dm dm Lincolnwood, IL 60646 Renea Cole 1-year 83 177 2-year 152 n/a York Metropolitan 3-year Advertising Director Irving Rodenberg New Area 208 n/a Nelson & Miller Associates, Inc. HOFACKER-VERLAG Advertising Accounts Jennifer H. Shaler 55 Scenic Dr. Ing W Hofacker Hastings-on-Hudson, NY 10706 8 Munchen 75 Creative Computing Press Laura Conboy (914)478-0491 Postfach 437. West Germany Software Development Kerry Shetline Southeast ITALY IL IL Eric Wolcott Mark Browning 1 -year 44.100 94.500 Owen Linzmayer Browning Publications 2-year 80.600 n/a Neil Radick P.O. Box 81 306 3-year 110.900 n/a Atlanta. GA 30366 ADVEICO SRI Software Production Bill Rogalsky 455-3430 Via Emilia Ovest. 129 Nick Ninni (404) 43016 San Pancrazio (Parmal Italy Mary Ellen Mendl Attn Giulio Bertellini Mark Levitt Canada JAPAN Y Y Operations Manager William L. Baumann Frank Lederer 1-year 8.250 23.600 The Pattis Group 2-year 15.100 n/a Personnel & Finance Patricia Kennelly 122 St. Patrick Street 3-year 20.700 n/a Suite 207 Bookkeeping Ethel Fisher ASCII PUBLISHING Toronto, Ontario MST 2X7 Aoyama Building 5F Retail Marketing Jennifer Burr (416)598-4289 5-16-1 Minami Aoyama. Minato-Ku Laura Gibbons Tokyo 107. Japan Circulation Frances Miskovich PHILIPPINES P P Moira Fenton 1-year 289 827 Carol Vita 2-year 529 n/a Elsie Graff attention suthore 3-year 727 n/a Pat Champion INTEGRATED COMPUTER SYSTEMS. INC Suite 205. Limketkai Bldg . Ortigas Ave Creative Computing will not responsible Office Assistants Rosemary Bender be Greenhills P O Box 483. San Juan Linda McCatharn for the return of unsolicited manuscripts, cas- Metro Manila 3113. Philippines Diane Feller settes, floppy disks, program listings, etc not Mary McNeice submitted with a self-addressed, stamped Barbara Werry envelope OTHER PARTS OF ASIA AND THE FAR EAST US* US* Order Processing Jim Zecchin 1-year 34 97 99 97 Gail Harris 2-year 6397 n/a Linda Blank 3-year 87 97 n/a Susan DeMark micpoforon Joanne Sapio ALL OTHER COUNTRIES US$ US* 1-year 3497 9997 Bridget Maher Creative Computing is available on permanent 2-year 6397 n/a record microfilm For complete information Shipping & Receiving Ronald Antonaccio 3- year 87 97 n/a contact University Mark Archambault Microfilms International.