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TRS-80 Magazine: 80 Microcomputing – 1983

by Ira @ 9:55 pm on March 2, 2009.
80 Microcomputing – 1983


80 Microcomputing – Volume 36 – January, 1983

Issue Information:

Volume: # 36
Date: January 1983
Load-80: Yes
Pages: 470

Table of Contents:
       

Features
74 The Creator Bruce Tonkin Some myths die hard, such as the quickest way to riches is to write a super program.
100 Forthwrite Wynne Keller The second generation of word processors is upon us. One newcomer, Forthwrite, deserves to be ranked with the best of them.
104 Selling Your Software Neil J Salkind So you’ve decided to put your program on the market. Should you sell it through a publishing house? Neil tells you how to begin.
117 The Art of Documentation G Michael Vose Here’s a step-by-step explanation of how to write clear, concise manuals for your programs.
154 How to Copyright Anthony T Scarpelli You’ve spent a lot of time and effort writing and debugging a program. Of course you want to protect your idea from theft, but how? I
156 Planetary Orbit [NEED TO FIX] If you’re interested in knowing a planet’s location at sometime in the past or future, use this program to calculate its position.

Articles
110 The Great Beyond Terry Kepner This version of Basic is much more powerful than Microsoft’s. Use it to write sleeker code.
126 Mailing List Compiler Gerald Sprouse Your Color Computer can be used to produce address labels and maintain mailing lists.
132 Hardware Hacker-Part IV Philip M Van Praag In his finale, Philip M. Van Praag ties together three devices to make up a powerful Peripheral Support Interface.
146 A Pascal for All Seasons Bruce Powel Douglass If procedure-oriented languages intrigue you, Alcor Pascal may be the answer to your needs.
178 Block Titles for the Mod II George Berman Print block letter titles on your fanfold printouts to make them more readable.
180 The Garbage Collector Bob Snapp The price you pay for strings with variable lengths can be a bargain if you collect your garbage efficiently.
188 Lunar Lander Nat R Koch Games are rarely written for the Model II but here’s one that lets you make a lunar landing.
192 Dogfight Ralph White Envision yourself as a flying ace sitting in a cockpit shooting the enemy’s biplanes.
197 Partially Disabled break Stephen Mills When you invoke the executioner in TRS-80 unintentionally, you’ll be glad to have this program on hand.
200 New Tricks forn an Old Dog Duane Hope In the early days of 80 Micro, you might have punched in a word processor by Delmer D. Hinrichs. If you did, these mods should be a cinch.
216 Outbreak Tom Hanson A Basic version of the popular arcade game featuring the amazing bouncing ball.
221 Judge 80 Stuart Cole Stu’s son failed to qualify in the Pine Wood Derby when his racer was misjudged. So Stu didn’t get mad; he replaced the judge with his 80.
227 Denominational Computation Gerald Sprouse You don’t have to be a Reverend to benefit from this financial statement program.
232 DSAVE John Hodgson A way to take the risk out of saving disk files to tape.
238 Windchill Determiner John L. Cranmer, Jr Now you have a way to determine just how cold you will be on those frosty winter mornings.
242 Getting the Most from the Model II La Verne E Olney Use supervisor calls and other tricks.
252 CC Monitor Sergio Zigras Tired of machine language forcing you to PEEK and POKE your Color Computer to death? Read on!
258 Interrupt Your 80 Douglas C Fisher Without a hardware mod, your 80 is immune to rude interruptions
268 Building a Better Adventure Dan Cataldo Knowing about parsing can help you create The Great Microcomputer Adventure Game
270 Optimize Your Code Robert W. McTernan Make your favorite programs run faster with a little help from a stop-watch
276 PENRAM Roxton Baker A machine-language utility to edit random access memory.
292 Repairing a Disk Crash Philip Martel If one of your Color Computer disks crashes, you could lose several programs. To rescue them, try the steps outlined in the article.
298 Discipline for the DIR Command Gerry Schechter Confused by the order your Color Computer prints the director? This utility makes your directory look the way you want it to
302 APL Primer – Part II Margaret M Grothman Vectors were your favorite part of high school physics class, right? This month, Margaret tells you how to use them in APL on your 80
310 Cassette Merge John Nicolettos You can combine old Color Computer programs with new ones. This technique tells you how, and you won’t have to retype anything.
316 Bit Smitten – Part IV Jay Chidsey Good looking title and credit pages for your programs are easy to set up with this utility
324 Tape File Manager Roger W Faulds The four routines of Tape File Manager will increase the speed with which your buffer can read and write data to and from the tape.
342 DROSSDOS/8E David Busch Since operating systems can be inadvertently frustrating, KTI’s faithful observer asks, “Why not stop the pretense and make them purposefully frustrating?”
348 When OK Isn’t Ed Deming Tired of the same old prompt?
352 BASTEP Alan D Smith Catching bugs a step at a time
358 A Port-Mapped A/D Converter M Parris Monitor your freezer and play Pong too!

Departments
8 Remarks Wayne Green The need for more secure computer systems and a call for better TRS-80 graphics.
12 Proof Notes Custer’s Revenge invades the sanctity of Microcom
16 Input Disgruntled Model II owner who wants a hard disk. A call for a Super-Scripsit driver for an Epson. Let’s have more Line Printer VII articles. Praise of the Word Machine. Knock on MONEY DOS.
30 Debug Colorful Computer fixes. Escape from SuperMaze. Curing jack o’lantern droll
34 Aid Credit union software. Smith-Corona and Scripsit. Request for government general ledger program. LEX 11 schematic.
37 Commander 80 Jake Commander The ghost of Thomas Wolfe haunts Jake as he returns to his home (in what he unfondly calls “Gray” Britain) and discovers the Dragon.
40 The Gamer’s Cafe Rodgney Gambicus The odyssey ends up in Vegas.
410 Reload 80
412 Fun House Richard Ramella Leap Year, Sands of Time, Perpetual Calendar
425 Applications Dennis Kitsz Putting the final touches on the build-your-own LNW
366 Calendar
435 Index to Advertisers
436 New Products TDK floppy disks and cassettes. Telex communications for CP/M owners. C C Mailer. Medical lab software. Model I expansion mainframe. Computer-Assisted Home Energy Management. Nutritional management software. Color III conversion plans. Brevi-T abbreviation utility. Educational Software Library. C for Model 16. Bazui’s Quest.
450 1982 Index to Articles
460 1982 Index to Reviews
465 Index to LOAD80s
45 Reviews Pac-Droids. C.C. Mailer and C.C. Merger. Make your computer talk with Chatterbox. Trashman, a string cleaning utility. Options-80, a stock-market utility. Log Electronic Notebook. Rental Property Investment Program. Black Death, a gem of garage-punk programming. Super-Scripsit.
72 Review Digest Address Factory for the Color Computer. Print CC allows your TRS-80 to act as a buffer for your parallel printer. Astro-Blast, not just another space game for the Color Computer. The Moses Lightpen. Color Computer Katerpillar.
370 News Enter the Dragon, a new 6809 micro taking Britain by storm. Tandy’s scheme to market its color machine outside the Radio Shack chain hits some rough water. The Source officially opens its new computer center.
394 The 1982 Reader’s Choice Awards May we have the envelope, please …
400 Feedback Loop Terry Kepner A program to forecast the weather. Unmodified Model I word processing. Okidata ribbons. Model II Scripsit and Epson woes. Epson tractor-feed problems. SuperScrsipsit-Epson incompatibility.


80 Microcomputing – Volume 37 – February, 1983

Issue Information:

Volume: # 37
Date: February 1983
Load-80: Yes
Pages: 438

Table of Contents:
       

Features
38 The Next Step Hardin Brothers A new column on combining BASIC and machine language
40 Suite 16 Dan Keen and Dave Dischert A new column on the Model II and II/16
166 States and Capitals Dennis Weide Quick. What’s the capital of Ohio? If you guessed Cleveland or Toledo, you’d better use this states program to refresh your memory.
178 Spelling Challenger Larry Krengel With these three word games, your kids can learn their spelling words while having a good time.
184 Math Fun David Haan Your children will have so much fun playing with your micro that they won’t even notice they’re learning addition and subtraction.
208 Michael’s Game Nancy Modney Youngsters don’t have to grow up afraid of micros. Start them off early with this game program that teaches letters and numbers.
212 Refrigerator Controller Michael’s Game Got an old refrigerator hanging around? This unit will let you control its lighting and temperature for all sorts of science projects.
237 Horse Race II Danley Christiansen This revision of a previously published program makes it a more useful educational tool.
270 Twinkle, Twinkle, Little Star Bill Grout With a little help from you and some imaginative graphics, the TRS-80 becomes a poet.

Young Programmer Awards
84 Introducing the Young Programmer’ xs Awards We’ve known for some time kids make up a significant portion of our readers, but we weren’t ready for this!
85 Quest for the Key of Nightshade David Schmidt (Grand Prize) An adventure written in Assembly language.
96 Project Deep Dive Michael John Lake (First Place, 14-18) Guide your sub though a winding tunnel while trying to avoid mines and torpedo launchers.
104 Music Composer Carl Huben (First Place, 11-130 Store up to 200 notes on your Color Computer and save the music you’ve created on tape.
108 Super Draw Terry Myerson (First Place, 10 and under) Make your CRT a sketch pad, save your drawings, and recall them at a later date.
116 TRS-Turtle Larry Brackney (Second Place, 14-18) Now bring this famous teaching tool into your Tandy machine.
124 The Lair of Kraken Beth Norman (Second Place, 11-13) Travel through an underwater palace battling the abominable Kraken.
132 Byte Cycles Nathan Miller (Second Place, 10 and under) A joystick game a la the light cycle races in TRON
134 Boxer Lloyd Kupchanko (Third Place, 14-18) Test your pugilistic skill in this nifty game involving you against the computer
149 Foreign Flag Quiz Jennier Neidenbach (Third Place, 11-13) Test your knowledge of world draperies.
152 CASS-80 Scott Steele (Third Place, 11-13) Have your own cassette-based bulletin-board system.
160 Math Countdown Adam Wells (Third Place, 10 and under) A computer class programming assignment turns into a valuable learning tool.

Articles
198 The Intersoft C Compiler Rowland Archer Third version of the C language incorporates some of the ideas of Pascal and Assembly and provides some features borrowed from UNIX
218 Son of Pilot Randy Hawkins If you’ve wanted to use Pilot, but it did not work on your system, try this altered version.
224 Cassette Index Andrew Sensicle If you want to save time when loading programs, try this index for the Color Comptuer.
228 The Model 16 Jim Hawkes An in-depth review of Tandy’s 16-bit machine.
244 The Art of Encoding and Decoding Karl Andreassen Use your computer to translate your messages into an indeciperable mess; then with this program, you can translate them back again.
252 LP VII Screen Printout Sege Calmettes Reproduce the video display on paper.
254 Fun for the Younger Set Safi Bahcall Introduce your 5-year-old to the TRS-80 with these math and word programs
256 Covergem James A Sanford Adjust the color and alignment of your color monitor with this Color Computer program.
260 APL Primer – Part III Margaret M. Grothman This month’s installment contains a bonanza of functions. To name a few: logical operators, shaping indexing, and reduction.
280 Mod II Random Access Terry Kepner You can benefit from this author’s migraine headaches cased by Model II mishandling of disk data.
282 Drop your Color Computer into Disk Drive Robert Nicholas and Philip Martel Discover life in the fast data lane by putting the pedal to the metal oxide.
296 Screen Format Program Generator Joel Belcher Save yourself the trouble of figuring screen locations, field prompts, and input fields and let your computer do the work for you.
310 Peek Pong Charles Gulick If you thought fast-paced games couldn’t be written in Basic, peek Pong should surprise you
314 Color Life Larry F. Perry Watch communities of organisms develop with the Game of Life for the Color Computer.
328 The Input Specifier G. Schweizer A subroutine allowing editing of input and saving your programs from crashing.
332 Color Computer Merge John Heusinkveld Concatenate your programs on tape.
334 Transmiter Jon Mark O’Connor Merge Transmuter with another program and you can relabel any and all program variables.

Departments
8 Remarks Wayne Green The 16-bit fad.
10 Proof Notes Piracy becomes a political issue.
12 To Copy or Not to Copy. A reader offers a helping hand and raises a commition.
18 Input The new exciting PC-2. better than On-Break GOTO. Okidata 83A problems. The meaning of baud.
28 Aid Engineering software. Last One questions. Interfacing problems Down Under. Model III Cassbox? Scientific reconstruction of auto accidents.
30 Debug Bugs In Casino Draw Poker. Model III Graftrax. Digital Doodles. Tee for Six. Tax Estimator.
32 Anniversary Correction Charles P. Knight Directory Information. Please correction. Here are the listings.
37 Commander 80 Jake Commander Structured programming blues.
46 Reviews 71 Quality instructional lessons with Author I. Create compiled Basic programs with The Basic Answer. Graphics-enhanced Basic. Apple Crunch, a computer crime novel. The Echo General Purpose Speech Synthesizer. DBASiC works kith FLEX. Doughflo, Ultra-Term, Mikeegraphic Graphic Systemn. Microbuffer and MXPLUS make your Epson perform like never before.
71 Review Digest El Diablero-An Adventure Game. Telewriter, the disk version, Outhouse, Fan for the Color Computer, Roman Checkers, Tandy’s Othello.
72 Calendar
80 The Gamer’s Cafe Rodney Gambicus Wherein a sprite named Mercedes Silver helps Max and Rodney win back thevan from Nurse Lovelace.
342 News Tandy’s program to help independent software writers. Isaac Asimov speaks in Brooklyn. Will rent-a-computer be a new trend? Pilot service center in Dallas may be start of something big. Custer’s Revenge stirs national outrage.
364 Copernica Mathematica Bruce Powel Douglass Aerobic mathematics.
374 MONEY DOS J.M. Keynes First came the hotllne, now the bulletin board.
380 Fun House Richard Ramella Dice games called Show Up, Drop Dead, and Martinetti.
387 Index to Advertisers
406 Feedback Loop Terry Kepner 80 to 35 tracks. Model I service manual. Expanding RAM. How to become an independent service person. Color Computer light pen. External Model III double-headed drives. Programming in English. Computer insurance.
416 Reload 80 Art Huston The finer points of tape loading.
420 New Products Personal Speech system. CP/M Software index. 96K for Model I. Printer Optimizer. The Amazing Ben. Model II Locker. Micromouse. Softrol recorder switch. Zaxxon for Color Computer. Food co-op software. Bumperware 1.0.


80 Microcomputing – Volume 38 – March, 1983

Issue Information:

Volume: # 38
Date: March 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
30 The Color Key Scott Norman New column on Tandy’s fabulous color machine!
74 Computer Security with a Credit Card Hardin Brothers and Jean Robert Durbin Are you concerned about unauthorized persons using your computer? If you feel a need for security, this article will be of interest.
112 CP/M Cheap Bill Brewer A CP/M mod for $5? That’s what author Brewer describes how to build. It’s easy to do and an Assembly bootstrap-loader is included.
124 Your First Hardware Project Jeff DeTray Want to get your hands dirty with some hardware construction? Here’s an easy starter project.
156 Hardware Hacker’s Tool Kit Jeff DeTray Take this helpful advice on compiling the essential tools to start your career as a TRS-80 hacker
298 Do-It-Yourself Computer John D. Chipman The LNW-80 is a versatile and inexpensive upgrade from a Model I, if you are handry with a soldering iron and have some patience.
342 Real World, It’s About Time! David Engelhardt Yes, you can use your micro for something other than games! In this article you will find out how to devise a clock that keeps real time.

Articles

Business
136 Inside AIDS-III Robert A. Fiorelli AIDS – It won the Reader’s Choice award in January. Now you’ll be able to see for yourself why it has become such a popular program.
246 Build a Better Budget D. S. Kemball-Cook The down and across grind becomes passe when you’ve got an 80.
276 Reservation Cancellation Arthur J. Welcher An 80 makes a travel agent’s work easy.
354 Chart Maker Stuart Ring A bar graph to help you bring those figures into focus.

Communications
280 Compac Brian Cameron and Dan Gould This communications package lets you “talk” to other computers, transferring programs between micros, minis, or even time-sharing mainframes.

Education
236 B$ Sharp Charles R. Perelman Use the Model II’s graphics capabilities to teach your child musical note recognition.
328 Scholastic Bowl James W. Wood Hold your own college-bowl meets and let your Color Computer handle the bells and whistles.
332 The 2,000 Year Old Algorithm Steven Groll Teach your 80 to find the greatest common denominator.

Games
218 Time Warp Russ Hildreth Destroy all the Time Gates
326 Turret Adam Finkelstein Pit your skill against an oncoming invader.

Graphics
164 PRINT@ Graphics Francis S. Kalinowski Use these demonstration listings to produce graphics and improve your programming skills.

Home Hobby
310 Music-80 Peter Freese Teach your TRS-80 to belt out your favorite tunes with this music interpreter. It’s easy to use, and has practical applications, too.

Reviews
92 Quik-N-Easi Pro Thomas L. Quindry Not a program generator, but an applications-development language, Quik-N-Easy-Pro frees you from learning detailed programming skills.
101 Flex Your Color Computer Scott Norman The Flex Operating System is here to stay for the Color Computer.

Series
200 APL Primer – Part IV Margaret M Grothman Have a matrix you’d like transposed? This month we’ll also tell you how to reduce, add, multiply, ravel, rotate, and catenate it.

Technique
150 Testing Your New RAM Dennis Weide Are you confused because the memory you have added to your Color Computer doesn’t work? This program will help locate the problem.
208 Seeret Ciphers George Reardon If you’ve always wanted to sendconfidential material to other users, try this public-key cipher system. It’s practically unbreakable.
252 Self-Modifying Programs Robert D. Rlfkin Get rid of clumsy duplications of code.
336 Compress It Franklyn D. Miller Squeeze a 12K program into a 4K computer.

Tutorial
176 Lisp: Basically Speaking – Part I Randy Beer Interested in a language that uses objects instead of number? Lisp is a symbol-manipulation language that uses lists of obejcts.

Utilities
190 CC DLOAD Frank Bogardus First, read this artlcie and learn about the Color Computer’s ROM. Then you can use the DLOAD command to link it with the Model I.
226 Cassette Operating System Richard W Castor Data-base management wih a tape-based system.
260 Easy Loader Thomas L Quindry Basic to machine language to CLOAD
272 Seeker Jon Mark O’Connor Why buy PRINT to LPRINT software when this one won’t cost you a dime?

Departments
278 The Poop on PEEK Steve Saisi Use PEEK instead of INKEY$ on your Color Computer to give your tired arms a rest during fast games.
358 Relocate Debug Jerry W. O’Dell If you like to hack up commercial programs, Debug may get in the way. So why not move it?
8 Remarks Wayne Green The cost of software publishing.
12 Proof Notes Meet the average 80 Micro reader
14 Input Floppy talk, Model III memory map, recovering dead files, open cartridge surgery comment, Scripsit changes for the forgetful.
24 Aid Looking for KBFIX/RELO. Anyone have a-bar code reader? Call for Model II education programs. Help needed for Qume Daisy Wheel proportional spacing.
26 Debug Take Color Computer differences in to account when uslng CC CQ. POKE graphics made compatible with disk systems. Quickcalc correction. String change for voice controlled typewriter. Subterra error. Before aliens attack, PCLEAR 2. Correct Color Assembler.
37 The Next Step Hardin Brothers After mastering Basic, the next step is machine-language subroutines.
44 Reviews CopyArt II. Zorloff Word-Processing System. MDX4 modem. Key Commander full-screen editor. Six joysticks reviewed. Data-Writer form letter and mailing list program. The Producer program generator. Strike Force, a game from Melbourne House. TRS.80 Color Programs, more than just a book of programs. Galaxy Invasion Plus. Jovian. SPOOL/64.
73 Review Digest Space Castle. Astroball. The Word Processor complements Bible Research Systems’s The Word. Profile.
364 News The Games Network brings video games into the home through cable TV. Staff walks out on PC. Report on Russian theft of U.S. high technology.
388 Medical Opinion Phillip R Mills, M.D. Medical data bases
393 Fun House Richard Ramella Make your own adventure game
403 Index to Advertisers
404 MONEY DOS J.M. Keynes Large profits quickly without disaster.
408 The Gamer’s Cafe Rodney Gambicus While the gamers collect some z’s, Stella continues the tale.
410 Feedback Loop Terry Kepner Readers’ questions answered.
420 Reload 80
410 Calender
424 New Products Professional Communications System. Fan for the Color Computer. 150 business utilities for $30. Olivetti Interface. Optima disks from Verbatim. Better VlsiCalc reports. A printer for all computers. The Universal operating system. Tandy to PC transfer. Legal-office software. Pocket-sized modem. Add a monitor to your Model III. Greek mythology game. Packet Computer business program. Gas Attack lets you be the bad guy. $16.95 word processor. Space Ambush.


80 Microcomputing – Volume 39 – April, 1983

Issue Information:

Volume: # 39
Date: April 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
82 The Muscle Micros The 80 Micro Tech Staff These three sleek, super-charged Model IIIs are ready to take their Winchester drives and bloe everybody else right off the road.
98 Language Development Tools A basic listing of a different sort for those of you ready to go beyond Basic.
144 Flex for the Color Computer Steve Odeal Read how this Color Computer owner dused his Radio Shack disk system with the versatile and inexpensive FLEX disk operating system
210 VCMOD Arne Rohde Make the modifications suggested here and create a useful editing function for VisiCalc
232 Color Black Box David W Gangwisch Stop Switching the RS-232 cords for your Color Computer’s printer and modem. Build this black box and leave them both plugged in.
264 OMNIPROM Bob Hart A nearly universal EPROM programmer
291 The Magic Matrix – Cryptology, Part III Karl Andreassen Learn the background of secret ciphers and explore polyalphabetic code with Andreassen’s latest article about cryptographic programs.

Sports
108 Tee Off! Michael Parks In this golf game, you will have to contend with hazrds as well as varying wind conditions
130 Batter Up! Harold A Kime This game is perfect when you want to play baseball but can’t get out to the ballpark.
152 Split Calculator G. Michael Vose Marathon runners, use this program to set a new personal record or even win your next race.
218 Bowling Statistician Charles Hoppesch Let a TRS-80 keep track of your pins
236 Tee-Toatler David Tinis Be your league’s record-keeper.
322 Soccer Anyone? Wayne D. Riggs If you’re a soccer fan, you’ll love the action in this two-person Color Computer game.

Articles

Games
242 Commander Flyinn in Color Victor T. Albino Now Color Computer owners can accompany daring Harry Flynn on his wild adventures in space.
326 Return to the Castle James Wood Here’s a game for you Color Computer enthusiasts complete with dragons, princesses and gold.

General
141 Punklist Eric Maloney Rock groups – don’t despair! This program will soon end your search for the perfect name.
332 Memory Exerciser Waldo T. Boyd This program provides a challenging routine to help strengthen your memory via your micro.

Graphics
306 Graphics on the Line Printer VII THomas Tinsley Vector coordinates, windowing, and divide-and-conquer translation add up to spirals, sine waves, cartoons, and more for LP VII artists.

Hardware
300 The Murphy Box Sam Conviser When your acoustic couple gives you trouble, use this device to diagnose the problem.

Review
120 Interpro Flexible Mailing List Jim Heid Has your correspondence gotten out of hand? This mailing list system will help organize names and addresses on your Model I or III.
198 Random Basic and the Scribe Editor Scott Norman If you’re a Color Computer owner using CC FLEX, these two programs from Computerware may be for you.

Series
157 APL Primer – Part V Margaret M. Grothman It’s all here – pi and trig functions, the quadratic formula, basic conversions, statistics, determinants, and matrix inversions
168 Inside AIDS-III – Part II Robert A. Fiorelli Round off your data-management system with MAPS-III, CALCS-III, and MERGE-III
254 Lisp: Basically Speaking – Part II Randy Beer Learn how to learn Lisp’s LAMBDA, NLAMBDA, and DEFINE atoms in the second part of this series.

Utility
285 Color Disk Directory Gerals Sprouse This master director will help you categorize and quickly locate programs and files.
296 Moving Window Ken M. Williams Page through the random-access memory of your Color Computer with this nifty little utility.

Departments
8 Remarks Wayne Gree Pocket pagers and the Model 16.
12 Proof Notes On the inevitability of Hot CoCo.
14 Input Comments on the Creator. Demon transients. Buzzword generator. Kudos for Model II game programs. Tips for top performance from your modem. Lobster in his crawdaddy. Time Manager patch.
24 Powersoft on Piracy In response to “To Copy or Not to Copy.”
28 Debug Regress correction. “Easy Picture Editor” bug.
32 The Color Key Scott Norman Turning your color machine into a home manager.
38 The Next Step Hardin Brothers Relocatable machine-language routines.
46 Suite 16 Dan Keen and Dave Dischert What’s the real advantage of a Model 16?
48 Reviews Runcalc, Machine Language Disk I/O & Other Mysteries. To Catch a dMouse Make a Noise Like a Cheese. STAR-DOS for Color Computers without Extended Basic. Demon Seed. ISSI General Ledger program. Grammatical Man. Time Runner. Centronics 122 Graphics Printer. Alien Defense Commented, the source code to a popular game with comments by its author. Okidata Microline 84 prlnter. Autogrammer, a program generator.
338 News Consumer Electronics Show In Las Vegas. Disney Productions enters the software business. Model I used for first-rate dictionary. Speachware: low memory, high speech synthesis.
364 Fun House Richard Ramella Four April Fools’ jokes for your computer
370 Calendar
372 MONEY DOS J M Keynes Choosing a broker.
376 Feedback Loop Special Edition Terry Kepner SuperScripsit
388 Feedback Loop Terry Kepner Reader’s questions answered.
398 The Gamer’s Cafe Rodney Gambicus Catching up on the mail while gassing up at Little America.
402 Copernica Mathematica Bruce Powel Douglass A convert of Pascal.
404 Reload 80 Art Huston Editor/Assemblers.
410 New Products Infostar data-base manager. Economic forecastlng program. Amplot six-color plotter. Epson, Qume, Brother. and other drivers for Super Scripsit, 007 mciro. Genius high-resolution display. CP/M Reveasled. Mel the Memory Mogul. SoundTrap silences your printer. Cyberchess lets you tackle the masters. Baseball-Stat. Half-height tandon drives. Glare filter.


80 Microcomputing – Volume 40 – May, 1983

Issue Information:

Volume: # 40
Date: May 1983
Load-80: Yes
Pages: 404

Table of Contents:
       

Features
90 The 80 Goes Color James W. Cole Color for the Model III
104 Symmetrical Graphics John D Fowler Jr. Are you intrigued by graphics? This article deals with the visual symmetry of rotations in a plane and of reflections across a line.
110 Color Computer Light Pen Ray N Moses Tired of typing on your Color Computer? Build this handy, inexpensive light pen, run the programs, and enjoy faster and easier input.
146 Software Buyer’s Guide: Graphics Software
218 The Printer as a Paintbrush – Part I Mike Keller Learn to use dot-addressable graphics
230 Profile II Modified John B Ford Make this classic program easier to use
258 Hardware Buyer’s Guide: Printers
278 Hardware Buyer’s Guid: Plotters
294 Dvorak Meets Scripsit John T. Phillipp Who needs QWERTY anyway?

Articles

Business
140 MiniCalc John Corbani Apply matrix logic to business applications
326 Business Graphics John Corbani Tell your company’s story in graphics. Figures made with these powerful, self-documenting subroutines speak louder than words.

Education
320 Billy and the Electric Troll Victor T. Albino Let these creatures teach your child number patterns.

Games
254 Color Computer Color Code Combo Stephen E. Sutton One or two people can play this game where you use your logic to guess color combinations.
298 Jet Bomber Thomas H. Rogers, Jr. Add the screen-scrolling feature of this game to your own games or other graphic programs.

General
324 Monkey Business David Busch For those readers who miss the daring new products from the zany crew from Sri Lanka …

Graphics
198 Rapid Prints Delmer D. Hinrichs Forget tedious mathematical calculations. Draw hundres of figures and shorten printing time with these Fortran and Basic programs.
212 40K Color Basic Richard E Esposito, Ralph E Ramhoff, Rayment W. Rowe Should you be content with 32K RAM on your Color Computer when you could have 40K?
236 3-D Printer Graphics Delmer D. Hinrichs Do you have a dot-matrix printer than can plit bit-mapped graphjics? These fancy peaks and waves will make it jump through hoops.
246 A Turn of the Screw Revisited Lynn Davis Here are “A Turn of the Screw” graphics for the Color Computer. Can you get the screw to turn?

Home/Hobby
152 Circuit-Board Scanner James Lisowski Your TRS-80 makes building a kit even easier
290 Mini-Micro Text Editor Jasper Kump This editor uses less than 200 bytes.

Review
133 The Model 12 Jim Hawkes Tandy refines the Model II and introduces a strong contender with the Model 12. This expandable machine is competition for the Model 16.
282 Double-Good Double-Density Carl Oppendahl Give your Model I a new lease on life with this Radio Shack Double-Density Disk Kit. You can improve TRS-DOS and Basic capabilities too.

Series
306 LISP: Basically Speaking – Part III Randy Beer In this final part of a series on LISP, you will learn about I/O methods, temporary variables, saving function definitions, and more.

Utilities
125 MX-80 Driver Dan Robinson If you’ve been unable to use your printer with SuperScripsit, you should try this program.
144 Statements in Common Zvi Barak You can transfer data from one program to another. This routine makes it quick and easy.
154 Pencil-Plus 2.0 Dan Robinson Electric Pencil 2.0 owners can expand its capabilities to include mix-and-match font combinations, keyboard input, and much more.

Departments
8 Remarks Wayne Gree A call for the Shack to make a comeback
12 Proof Notes On being thick and Jake’s departure
14 Input Computus interruptis. Second childhood? II/16 in Chitown. Custer’s Revenge. MONEY DOS loss. Users group Tarheel. CoCo users in Memphis. Remarks on Northeast Computer show rapped.
22 Aid $50 joystick? Sound fascination. Wants July 1980 issue. TRSDOS 2.7DD incompatible with Scripsit. Biblio data-base manager wanted. Plumbing programs needed. User wants SuperScripsit and NEWDOS 2.0 to tango. LNW-80 patch wanted. AN-7000 friends needed.
26 Debug Campaign funding irregularities in “Electrion.” No new tricks if advice of old dog heeded. CASS-80 mistakes. Listing mixups. Sound for draw poker found. ERROR GOTO. Missing listing. CASS-80 miscues.
28 The Next Step Hardin Brothers Passing values between machine language and Basic.
38 Commander 80 Jake Commander What is this thing called Tandy?
41 The Color Key Scott Norman More on Homebase program for CoCo.
46 Reviews GRASP. Dot Writer 1.5 Color-Graph. TRS-80 Pocket Handbook. Mindwarp math drill program. System Diagnostic 2.0. Interface Projects for the TRS-80. PLAN80 2.5. Gemini 10 and 15 printers. TC-8C High Cassette System. JBUG Monitor. Cyberchess Chess Improvement System. Super data-base program. Super Duper.
86 Review Digest Solo Pool, billiards for your micro. Doodle Bug game. Maxi CRAS. Polaris. MULTIDOS. Business Mailin List. Wired, a novel by Harry Hellerstein. The Last One. Versa-File. CGP-115 printer. The Qume Sprint. Forth. TRS-80 Graphics for the Model I and III. Scriptr. TaxPro. ZGRAPH 4.0.
88 Calendar
334 News Model 12 released. CP/M and Xenix in Tandy fold. Portable Radio Shack micro rumored. Chances slim for Apple Bill this year. New movie uses computers in real time.
357 The Gamer’s Cafe Rodney Gambicus Rodney and his crew arrive in Iowa City.
360 Reload 80 Art Huston An explanation of DOSPLUS
362 Fun House Richard Ramella Fun generating mazes
371 Index to Advertisers
372 Take II QuickCalc for the Model II
380 Feedback Loop Terry Kepner Reader’s questions answered.
392 New Products Model 16 Xenix. Infoscribe dot-matrix printers. Boot Error Eliminator. Modula-2 manual. Revolution, CoCo auto race game. Talk to the TRS-80. Fanfold checks for business. Satellite tracker. Program of the Month club. MicroSpooler. Supreme Rules. The Answer shifts manual modems into automatic. Tallymaster financial manager. Something for you dance-hall owners.


80 Microcomputing – Volume 41 – June, 1983

Issue Information:

Volume: # 41
Date: June 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
68 Drivers and DCBs Jery Lindsly Are you curious about machine-language programming? The ROM subroutines explained and demonstrated here will help you learn.
78 Apple Core Emulator Gary Grout Now Model I and III users can have the best of both worlds. With this emulator, your TRS-80 writes and runs Apple II software.
104 Basic, Faster and Readable – Part I John Corbani If you remember some of the rules you learned about grammar so long ago, then you should be able to use Basic effetively and efficiently.
116 The 80 Goes Color – Part II James W. Cole Now that you’ve modified your TRS-80 so it’s capable of color graphics, you need this set of USR routines to enhance your programming.
134 Software Buyer’s Guide: Utilities
173 Assembly-Language Shortcuts – Part I Bob Bowkey Bowkey introduces his series of articles with simple tricks and shortcuts to make writing Assembly-language programs an easier process.
200 Build an EPROM Programmer William Mahoney Would you like to have all your favorite programs in a ROM pack? Do just that quickly and cheaply and for yourself.
234 Hardware Buyer’s Guide Disk Drives and Disks
244 Programming the Model 16 Dan Keen and Dave Dischert The 16-bit MC68000 microprocessor is flexible, executes instructions faster thaneever before and, best of all, isn’t hard to understand.

Articles

Games
296 Bustout Terry Hague Are you looking for games for your Color Computer? Here’s one that really tests your skills.

Graphics
164 Better CoCo Graphics Wayne Thume If your Coloor Computer screen can’t handle detailed graphics, Try this graphics editor.
282 The Printer as a Paintbrush – Part II Mike Keller Reproduce the finer shading levels.

Hardware
270 Model II Real-World Input/Output J J Barbarello This Model II capacitance meter lets your computer communicate with the outside world. It’s inexpensive and simple to build.

Techniques
258 Using Data Files – Part I Jesse W. Baker Data files consist of characters stored on magnetic disks independent of other programs. You can learn to handle them efficiently.
300 Ordering Via Recursive Routines John Stover Recursive routiens can calculate all possible number combinations in a small amount of code.

Review
148 DOSPLUS II Art Huston Need a snazzy new DOS for your Model II, 12, or 16? Try this one.
180 The Postman’s Second Ring Jim Heid The second version of Postman is a complete mailing-list system to help you make your appointed rounds.

Series
190 Letter-Frequency Distribution – Cryptology – Part IV Karl Andreassen Here’s another article in the cryptology series. You’ll learn how to use letter-frequency distribution to crack ciphertext.

Tutorial
110 Color Sketchpad Larry Colle By using your keyboard to draw, you can avoid the drugery of designing graphics

Utilities
246 Flowchart Generator Peter R. Ohs Make it on your TRS-80.
302 Robot Reader Charles Glllen This short Basic program accepts text, analyzes it, and tells you its difficulty level.

Departments
6 Remarks Wayne Green Tandy’s decision not to tubewhip consumers.
8 Proof Notes
10 Input Readers write to 80
22 Debug 80 programs corrected and improved.
24 The Next Step Hardin Brothers Tinkering with the Basic in your ROM.
32 The Color Key Scott Norman Color keyboard, Telewriter improvements, 64K CoCo.
38 Suite 16 Dan Keen and Dave Dischert Disk-not-ready error tackled.
40 Reviews Deadline. MicroTerm. Bable Terror. Color Pilot. Everything You Always Wanted to Know About Home Computes, D-92 printer. Telewriter 64. And more.
67 Review Digest TRS-80 products reviewed in other publications.
208 News Model 100 released. Microfloppy war. Tandy unfazed by market share loss. Spiritual programs for the CoCo.
322 Take II I/III programs converted to Model II.
328 Calendar
330 Fun House Richard Ramella Traveling games.
336 Reload 80 Aimee Eisenberg New disk transfer system
340 The Gamer’s Cafe Rodney Gambicus Askew in Sandusky
344 Feedback Loop Terry Kepner Readers’ questions answered.
358 New Products Newbasic. Okldata Microline up-date. Screen Expander. L-Monitor. II/16 Telex Software. Transector SL Surge protector. Scheduling planner. Tasman Turtle. LDOS help. Diplomat Intelligent switch box. Color Computer voice-recognition pro. gram. Model 16 data base. Android Attack. I/IIII Statistical Package. Common Subroutine Colleotion. Cores-9 editor/assembler update. CoCo keyboards. And more.


80 Microcomputing – Volume 42 – July, 1983

Issue Information:

Volume: # 42
Date: July 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
78 La Plume de Ma Tante Philip Martel and Robert Nicholas If you’ve ever wondered why there are so many programming languages for the TRS-80, this overview provides insight and examples.
94 A Pascal Primer J.B. Harrell Learn Pascal while teaching your micro to play cribbage.
186 Fortran Breakout J.B. Harrell This popular gamea appeared in Pascal in our July 1981 issue. Here it shows the power and speed of Fortran.
220 Logo for the CoCo Molly Watt Radio Shack’s Color Logo brings computer programming to your kids.
228 A History of Programming Languages Alan Nelbauer This survey traces dialects development from the days of wires and switches to the modern programming era.
297 Directory to Hardware Manufacturers and Distributors If someone makes it or sells it, we’ve got it

Articles

Business
240 Service with a Smile James H. Nestor Lean Basic programming and keep custom records up-to-date.

General
212 Software Buyer’s Guide: Color Computer Utilities Products to extend Color Basic programmers’ skills.
256 Hardware Buyer’s Guide: Color Computer Upgrades and Peripherals Buying a CoCo is only the beginning.

Hardware
138 Build It Yourself Ralph Navarette A simple serial interface for the MX-80 and the Color Copmuter, with programs to show it off.
274 Hardware Hacker Help Philip M Van Praag Analyze PSI circuitry problems with this test equipment and advice.
286 Making a Weak Link Stronger Thomas Hartmann What’s wrong with the TRS-80′s screen? Find out, then see what you can do about it.

Review
122 The Max-80 R. A. Langevin Lobo’s Max-80 provides CP/M capabilities and is compatible with most software

Technique
130 Which Way the Wind Blows William Bunch and Robert J. Lisi This weather data base provides information on high and low temperatures, degree days, and more.
200 Basic, Faster and Readable – Part II John Corbani Make conditional tests easier by tailoring the logic to the expected input.

Tutorial
208 Mod II CRT Controller Steven and Yvonne Grant Program the Model II’s MC6845 chip and control up to 16 screen functions

Utilities
290 Profile File Transfer John Mabry Use this easy Basic program to put Profile data in new files.

C Notes
158 Tandy’s Towering Totable John Berman The definitive review of the definitive portable computer.
166 People Are Talking John O. Mello Jr. The Model 100 has industry insiders puzzling. Here’s what they say about Tandy’s newest.
169 But Will It Fly? John P. Mello Jr. Is it safe to take your 100 on plane trips? 80 Micro checks with the airlines.
170 Model 100 Start-up Kit Gas and Oil Mileage, Traveling Expenses, Punch Out, Itinerary 100, The Final Notice, Monitor 100, and The Rule of 78 – everything from hotel bills and loan payments to monitoring hexadecimal addresses for portable programmers.

Departments
6 Remarks Wayne Green Praise for the Model 100.
10 Proof Notes The Model 100 has changed the world and 80 Micro.
12 Input Goodbye to Brenner. Debug for DLOADM. Protected software protest. Program for woodworkers. Angry AIDS customers and SoftTrends’ response. Print sort results. TRS-80/Apple translation. improved Lisp interpreter. Scripsit meets XFERSYS.
20 Aid European electricity. VoxBox software needed. Which way to process envelopes? Quest for print wheels. Model III map. $1,000 paperweight. NEC printer and Model II graphics.
22 Debug An impediment in Lisp. Peg Legsand Tack-Gun CoCo bugs. Michael’s Game in color.
24 The Next Step Hardin Brothers Scroll, don’t flip.
32 The Color Key Scott Norman CoCo languages and Colorkit improvements on Basic.
38 Reviews Tallymaster. Epson FX-80 printer. Starcross, a hunt for black holes. CoCo expansion interface and clock/calendar. SeeBee stops Model II boot errors. ENBase. Supreme Ruler. ZSIM.
75 Review Digest What others are saying about TRS-80 products.
77 Calendar
332 News CoCo stands alone as TDP twin leaves market. Finding romance at 300 baud. CRT safety questioned. New posse to ride Silicon Valley. E.F. Hutton talks, but few listen.
342 Take II Black Friday for II/12/16 owners.
346 Fun House Richard Ramella A festival of mini-programs.
356 The Gamer’s Cafe Mercedes Silver Letter to a Radio Shack dealer.
360 Feedback Loop Terry Kepner Readers’ questions answered.
370 Reload 80 Amee Eisenberg To catch fleas, think like a computer.
374 New Products Supa*Edit. 5D Star Empire. NEC dot-matrix printers. 1.6 MB minifloppy. Pajaro, a new language for the Models I/III. Compu-Talk for II/12/16. Business Computer Network. Priority Organizer. DBMS subroutine package. Control four recorders with one CoCo. Model III dumb terminal program. Modular micro furniture. What the well-dressed computer is wearing.


80 Microcomputing – Volume 43 – August, 1983

Issue Information:

Volume: # 43
Date: August 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
86 Armageddon Tom Alar Meteors are falling on Madison, WI. Your speed and dexterity can save the city.
92 Lost on the Great Barrier Reef Thom Johnstone and Mike Matthews Danger Down Under – an adventure that might leave you stranded
100 Once More, With Feeling G. Michael Vose A review of Tandy’s third generation: the Model 4 with 64K, 4MHz, and CP/M for $1,999.
110 Rat Maze Richard Uglum A game that’ll make you feel like a laboratory animal
120 Muddy Pig Simulator Mike Conforti Tired of fancy flight simulators? Struggle with swine in this fast paced corral game.
148 Model II Casino Byron Lott Las Vegas Night for the business micro.
182 Micro-Melodies Jef Bell A new way to test your memor – match those tunes.

Articles

Games
212 Collegiate Capers Christopher Skapura The Paper Chase was never like this.
226 Attack of the TRS-80 Hollie H. Satterfield A lunar colony is at the mercy of a mad Model I. Can you stop it and save the inhabitants?
234 Maxwell’s Demon Lee Morgenstern Hot and cold molecules don’t mix in this game based on a hypothesis in physics.
246 Kings and Castles Gary Michaels “Kings and Catapults” returns for Color Computer warriors.
256 Strip Blackjack Stephen Mills Play for high stakes in this adult variation of a computer favoriet.
268 Light Cycles Donald David Rev up and paint the screen. It’s easy except for the obstacles and your opponent.
272 Maze Chase Leonard Karr Try to catch the asterisk before enemies catch you.

General
138 Software Buyer’s Guide: Model II/12/16 Games The most fun you can have in the office.

Review
141 Maxi Mall Jim Heid A mailing-list manager that comes with its own DOS.
188 ARCDOS for ARCNET Joseph E. Trojak An overview of Radio Shack’s Model II/12/16 network

Techniques
124 My Foe Flicker Joseph Dihopolsky Keep your electron gun on target and eliminate the flicker that plagues Model III animation.

C Notes
200 Five Portable Programs 80 Micro Tech Staff and Richard Ramella Foxfighter, Intel, Subtera, Renumber 100, and The Year in Review: three games, a utility, and a bar graph for briefcase computing.
209 Nothing’s Perfect Ken Barbier Even the Model 100 has a few drawbacks.
210 Text Meets WorStar Ken Barbier Sending Model 1000 ties to the leading CP/M word processor.

Departments
6 Remarks Wayne Green Mini moguls and the micro market.
10 Proof Notes Mad Max on the Gamer’s Cafe philosophy.
12 Input Hard disk accounting. AIDS-III improvements. Reader supports PowerSoft; WittSoft replies. Moving Window simplified. Tandy in business. Scripsit for LDOS. Model 16 Xenix applications. Jet Bomber and Batter Up for Model III. User’s group update.
24 Aid Pen pals for Australia. Model I in stereo. Ukrainian alphabet for TRS-80? Datagraph patch sought. Model II jeweler. Lowercase for Centronics. Creeping screen display.
26 Debug Text editor correction. EPROM programmer schematic. Commands for Color Disk Directory. Dreidel debug debugged.
30 The Next Step Hardin Brothers Keyboard secrets revealed.
40 Suite 16 Dan Keen and Dave Dischert A look at TRSDOS – all 11 versions.
44 The Color Key Scott Norman Games, graphics, and 3-D trigonometry
50 Reviews Prometheus 5 hard disk and DOSPLUS 4.0 operating system. Color Caterpillar. POWER! for CP/M. Microcomputers in Large Organizations. SneakThief. Early Games. Lazy Writer extensions. ProTrade. TRS-80 Interfacing Projects. And more.
83 Review Digest Some other views of the TRS-80 marketplace.
280 News Model 100 upstages Model 4 at Boston debut. U.S. computers and Japanese competition. Micro Sales and support. New portables at Comdex. High-tech job skills. School and home use surveyed. Epson meets Miss World.
296 Calendar
300 Fun House Richard Ramelia Can you guess the Mystery Guest?
310 Feedback Loop Terry Kepner Questions answered, no waiting.
315 Young Programmer’s Contest The scoop on entering our 1983-84 competition.
320 Take II A favorite from last year’s games issue.
324 The Gamer’s Cafe Rodney Gambicus Marching through Georgia.
328 Copernica Mathematica Bruce Powel Douglass Eigenvalues by the power method.
340 Reload 80 Amee Eisenberg Overcome /SRC anxiety
344 New Products 200-MB mass storage. 40-track formatter. Model II/12/16 disassembler. Custom screen designer. WattsOut. Faster CoCotapes. Ink-jet printer for $560. Model III business package. Soundplus. Memory Jogger. Subterranean Encounter. Model 16 spreadsheet. Printer-Stilts.


80 Microcomputing – Volume 44 – September, 1983

Issue Information:

Volume: # 44
Date: September 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
74 The Business of Planning Ronal A. Cangro Don’t be a financial gambler – use Monte Carlo analysis to defeat business problems.
128 Project Assessment Technique Calculate the rate of return and plan business alternatives
152 Busines Bazaar A buyer’s guide to profitable sofware.
180 Satellite Word Processing Henry Aldrich Use CoCos as terminals while you Model I/III/5 handles the printing chores.
184 Spacemap Hubert C. Bormann A track-by-track disk directory for Model I woners.
220 80 Micro’s Second Annual Reader’s Choice Awards Your chance to pick the winners in TRS-80 software.
230 Talk to the Big Guys Douglas Payne Use this dumb terminal program to say hello to minis and mainframes

Articles

Business
108 What’s the DIF? David G. Haan Access VisiCalc files from basic for error-free reports.
140 Financial Transactions Recorder Jim Barbaerllo A Model II/12/16 data base that organizes and tallies your business deals.

Graphics
208 The Artful Plotter Jerry O’Dell The Radio Shack plotter/printer struts its stuff.

Hardware
272 Portable Word Processor Thomas Hartmann The Sony Typecorder and your Model III make a powerful combination for writing on the run.

Review
120 The Versatile Microprism Bradford N. Dixon A printer that combines the best features of dot-matric and near-letter-quality machines.
200 The LDOS Toolbox Jim Heid Powesoft adds utilities and patches to the popular operating system.

Technique
116 Saving Strings David M. Keil Even the fastest typist can’t outrun this INKEY$

Tutorial
216 Aid for AIDS-II Amee Eisenberg Getting the most from the March issue’s data base manager.

Utility
268 Mod II File Transfer Utility J. H. Nestor Tell your micro to move files, then leave while the work gets done.

Departments
6 Remarks Wayne Green Anatomy of a merger.
10 Proof Notes Coming to terms with terminology.
12 Input Replacements versus copies. Alarms and switches. Motorola on the MC68020. Bigger barriers. Print and LPRINT. Model II spooling. Lower bombing runs. More on WittSoft. Forcing programmers away from Basic.
20 Aid Model I speedup. Advertising software. Electric Pencil lowercase. Alcor Pascal assistance.
22 Debug Fixes, patches, corrections, and amendments.
24 The Next Step Hardin Brothers Low memory and restart vectors.
30 The Color Key Scott Norman Plot your expenses with this CoCo graph program
38 Reviews The MC-10, a CoCo for beginners. Liberator. Computer Programming for Kids. The Executive Calculator. Model II games. MaxiStat. The Home Accountant. Forms III/Prosort III. Optimal Manager. Games at a Glace.
71 Review Digest Outside opinions of the TRS-80 marketplace.
72 Calendar
280 C * Notes A portable disasembler, elapsed time clock, foreign exchange, and tips on writing your own Model 100 conversions, plus an update for would-be fliers.
292 News CP/M and the software outlook. The stringy floppy forgets its past. Tandy-vision: In and out of the video biz. Micros in hotels. the Model I in museaums. June in Massachusetts.
304 The Gamer’s Cafe Rodney Gambicus Investing in Florida real estate
308 Feedback Loop Terry Kepner Our columnist fields your questions.
320 Reload 80 Amee Eisenberg Making business software decisions.
324 Fun House Richard Tamella Back to school, Fun House style.
331 Young Programmer’s COntest How to enter the second annual extravaganza.
332 Take II A Model II mailing list.
338 New Products Multi-color plotters. Alone with Floyd. Self-cleaning disks. Model 4 upgrade. Z80 applications. VisiCalc and CP/m tips. Text-formatting spreadsheet. Model 100 and RS-232 bar code readers. Power console. Use CoCo disks on your I/III.


80 Microcomputing – Volume 45 – October, 1983

Issue Information:

Volume: # 45
Date: October 1983
Load-80: Yes
Pages: ???

Table of Contents:
       

Features
90 Ephemeris for Comets and Minor Planets James H Fox Your TRS-80 goes into orbit to project the positions of comets and asteroids.
100 Molecular Matters Karl Samow Molecular orbital theories of chemistry are elementary for the Model III.
114 What’s Up and When Adron D Lilly Jr. A program that turns casual skywatchers into celestial experts.
136 Life with the Model II David G Faske From office management to population management.
148 Physically Astronomycal Sam Conviser Learn about physics while you tour the stars.
186 The Biobox J. J. Barbarello Monitor and control stress and tension with this Model II biofeedback interface.
196 Directory of Software Manufacturers and Distributors Everyone who’se anyone in the TRS-80 software world.

Articles

Game
244 In Search Of … James Blatt Hide words in diabolical puzzles and frustrate your friends.

Hardware
126 Using the Model III I/O Bus James N Cameron If the Model I’s system expansion port had you stumped, here’s a guide to its Model III improvement.

Review
110 Super Utility Plus 3.1a – The Jaws of Life William D. Allen New features and more raw power mark the newest SU+.
160 DOSPLUS 3.5 John B Harrell III Micro-Systems Software takes another few steps beyond TRSDOS.

Science
236 Brief Exposures Brian Durell How’s your short-term memory? A tachistoscope program to test your perceptions.
256 Catching Rays Smith Harris Calculate attitude and azimuth to find the sun’s exact position.

Technique
172 Sorting in Place George Reardon What to do when there’s no room for a random-access disk file.

Tutorial
120 Meet the MC6800 John Edward Crew A look at the Model 16 CPU’s features for Assembly programmers.
234 Making Hay with Arrays Karl Townsend Random access without disk drives.

Utility
252 DATATP Jeff W. Collins A hybrid Basic and Assembly listing to simplify tape data handling.

Departments
6 Side Tracks Eric Maloney Copyright, piracy, and the TRS-80 market.
8 Proof Notes Science for the micro masses.
10 Input Speeding up Andreassen’s chipher. CoCo Robot Reader. Z80 versus 68000. Who is Suzuki Hayashki? Structured Basic debate. Scripsit and Pencil Plus patches. Logo computations. Playing Pascal cribbage. Comal.
20 Aid Missing issues. Model I Vidtex wanted. Law enforcement assistance. Graftrax chip. Stringy editor/assembler.
22 Debug Fixing Strip Blackjack and Profile File Transfer.
24 The Next Step Hardin Brothers Restoring June’s Model III Restore Patch.
36 The Color Key Scott Norman Indulging a passion for mathematics.
44 Suite 16 Dan Keen and Dave Dischert The faster master oscillator.
48 Reviews Library Support Option. TRS-80 Pascal 2.0. Newbasic. Kuzel II/12/16 games. Guide to WordStar. Mannesmann Tally MT160. Typitall 1.2. TRS-80 Data Communications Systems. Project Manager. Clean Slate. Power-DOT
87 Review Digest What they’re saying about TRS-80 Products.
88 Calendar
266 C*Notes Mighty Write, the I Ching, job estimate, grocery list, and Cram 100 – print formatting, business, a game, and the Book of Changes for Model 100 buffs.
286 News Texas Instrument’s crash and the industry outlook. Microsoft joins Japan. Anti-copy lawsuit. Computer store survey. A networking standard. School micro update. Roger Moore. Free word processor.
302 Reload 80 Amee Eisnenberg UTerm and memory error messages.
304 Copernica Mathematica Bruce Powel Douglass Human and machine vision systems.
314 Fun House Richard Ramella Learn Spanish, states and provinces, and the times table.
316 Young Programmer’s Contest This should be even bigger than last years’x.
324 The Gamer’s Cafe Rodney Gambicus and Charles C. Edwards A Florida condo and the Temple of Apshai.
330 Feedback Loop Terry Kepner Questions, answers, and occasional opinions.
340 New Products Olivetti paper guide. Manager DBMS. Standby power. Daisy M45 printer. Datalock for CP/M. Color Scribe. printout basket. Xidex premium disks. The Buffer Box. MITE communications program. Clean your printwheel. Real Estate Analysis. Beeper T-shirts. SuperSoft C.


80 Microcomputing – Volume 46 – November, 1983

Issue Information:

Volume: # 46
Date: November 1983
Load-80: Yes
Pages: 340

Table of Contents:
       

Features
94 Hello Bar Codes, Goodbye Keyboard? Hermes S Mendez Optical scanning for accurate data entry – grocery stores are only the beginning.
104 Bars and Stripes Forever Davey S Thornton A look at industrial bar codes, with three popular styles for your Model III and Epson MX-80
114 Check-Out UPC’s Davey S Thornton Print out UPC codes with you Model III and MX-80
128 Decoding Bar Codes Robert S Craft and Richard G. Bepiat Not only can your III print bar codes, it can read them with these DOSPLUS 3.5 programs for RS-232 data transmission.
140 Graftrax Art Palette Franis S Kalinowski Your Model I/III and an Epson can team for full-color printouts
212 Using Unix-Xenix – Part I James Hawkes First of a series on the 16-bit multi-user standard.
216 Real World Control – Part I David Englehardt Make your Model III into a home safety watchdog.
296 Cafe Expressor The Gamer’s Cafe One-line games that astounded the judges.

Articles

Business
242 Straddle the Market John Bell Challenge Wall Street with this introduction to stock options.

Games
244 Depth Charge L. B. Cebik Destroy underseas bases in under 2K RAM
256 Prime Mission Jeffrey O Fisher If you hated prime numbers in math class, here’s your chance to get even

Review
176 Data-base Duo Wynne Keller Reader’s Digests’s ListMaker and SofTrends’ Promise!: two in-memory DBMS programs for fast fliers.

Technique
234 Scrambled Alphabets: Cryptology – Part V Karl Andressen Instead of changing letters, our cryptologist turns his hand to rearranging them.

Tutorial
238 Basic, Faster and Readable – Part III John Corbani Save time by speeding up Basic loops.

Utilities
186 Space Maker Jim Barbarello Spread out Model II/12/16 Basic listings for easy reading
202 Color Correction Danley E Christensen A test pattern program for accurate color reproduction
204 Make Your Word(s) Count Charles Knight How long is that Scripsit file? Now you can know in words instead of characters
238 REM Remover Charles R Perelman Take back your remarks to save Model II disk space
248 Extend Radio Shack’s Editor/Assembler Robert J Fleck Check your object code while using EDTASM.
260 Directory Assistance A cure for vanishing II/12/16 disk directories.

Departments
6 Side Tracks Eric Maloney Whie the Big Four are the Big Four.
8 Proof Notes How to catch bar code fever.
12 Input Tandy’s cash registers. Reviewer and designer discuss TRSDOS 6.0. CRT reassurance. Fixing Model I displays. Kepner on piracy. STAR-DOS defense. AIDS-III addenda.
20 Glossary
22 Aid CoCo RTTY wanted. Can you convert Profile to Profile II Plus? Model I RSCOBOL expansion.
24 Debug Tidying up Pascal, ending “La Plume de Ma Tante,” and completing Model II Casino.
26 The Next Step Hardin Brothers Don’t forget variables and arrays.
36 The Color Key Scott Norman Virtual disk programs for 64K cassette users.
44 Reviews Tandy’s PC-4. The Banner Machine. LDOS utilities. Gridstar. DMP-2100 printer. TRSDOS Speed-Up Kit. Finger Print. Quill. Softcomm. Benchmark. Draw and Kwikdraw. Electronically Speaking. Games at a Glace.
89 Review Digest Other’s opinions of TRS-80 products.
264 C Notes A portable bonanza: Nag Analysis, songwriter’s aid, robot control, daily numbers, and Model 100 correspondence.
277 Calendar
278 News Revised Radio Shack management: an exclusive interview. Continued micro Industry chaos. Oklahoma modernblues. A different kind of terminal package. Radio Basic. Comptuer haute coutre.
294 The Gamer’s Cafe Rodney Gambicus Reunion In Baltimore and a Silver sibling.
299 Young Programmer’s Contest Last call to send in your masterpiece.
300 Fun House Richard Ramella Basic animation: growing trees and playing games.
310 Feedback Loop Terry Kepner Expert answers to techie questions.
322 Reload 80 Amee Eisenberg Now Load 80 speaks both source and object.
324 New Products Model III/4 Pascal graphics. RSM3 monitor. II/12/16 Profile transfer. DOSPLUS IV. Using Scripsit. DBLTalk for CompuServe. Surge Sponge. PowerMail Plus. The Circuit Judge. RS-232 Analyzer. New Tandy printer. WordStar for LDOS. Strap your 100.


80 Microcomputing – Volume 47 – December, 1983

Issue Information:

Volume: # 47
Date: December 1983
Load-80: Yes
Pages: 342

Table of Contents:
       

Features
74 Assembly Language Made Simple – Part I Hardin Brothers The first step to writing Assembly programs: Learn how the Z80 processes instructions.
78 Making Sense of Those Crazy Numbers Amee Aisenberg Binary and hexadecimal explained
88 Assembly-Language Disk I/O David G Haan Write efficient programs by masterin Assembly’s I/O techniques
110 Finding the Search Solution Joseph E Trojak Search text files fast with the state of the art in signature screening.
116 Assembly-Language Shortcuts – Part II Bob Bowker How to handle the stack, plus a reassuring look at logarithms.
122 CP/M III Ways Terry Kepner CP/M 2.2 boards; three ways to expand your Model III’s software library.
132 Protected Tape Programs Dan Robinson Two anti-copy routines to foil cassette predicators.
140 Channels of Communication Dan Keen and Dave Dischert A satellite dish can bring you over 140 TV stations. Here’s how to assess your location and aim your antenna.

Articles

Hardware
152 Real-World Control – Part II David L Engelhardt Connecting Part I’s hardware to let your Model III run household appliances.

Review
146 A Modem Sampler R A Langevin UDS’ 212A/D and Novation’s J-Cat and Smart Cat: One of them should suit your direct-connect needs.

Tutorial
174 Basic, Faster and Readable – Part IV John Corbani Making variables work for you.

Utility
170 Chameleon Code Bradley Murray From Assembly to Basic in the blink of an eye.
177 Take It Off David L Engelhardt Crack TRSDOS 6.0′s password to erase utilities and clear disk space.
179 The Password Is … David Lantis Discover the password of a protected Model 4 file.

Departments
6 Side Tracks Eric Maloney The so-called computer revolution.
8 Proof Notes Assembly lanuage without fear.
12 Input MaxiStat is now StatPac. DMP200, LPVII printer patches. Separate Model I and III programs. Save AIDS-III disk space. Maze Chase PEEK. Speed up Model 4′s Mod III mode. TRSDOS 6.0 shortcomings.
18 Aid Readers in need
20 Debug Talking to big guys, Black Friday, and Breakout.
22 The Next Step Hardin Brothers Keep an eye on variable values
30 The Color Key One last look at the world of CoCo software.
36 Suite 16 Dan Keen and Dave Dischert Multiple multi-user systems: Arcnet and Xenix.
38 Reviews The Statistician. Newbasic 2.1. Four Model 100 games. CP/M from Omikron. MicroSpooler. Monty Plays Scrabble. Businesspack +. Instant Assembler. Using Scripsit.
232 C Notes For serious Model 100 owners: a memory map. basic tokens, do-it-yourself modem cable, and program length counter. For frivolous Model 100 owners: blackjack
251 RAM Files Monitor 100 and Foxfighter fixes. Calculator program
254 News The Model 100 gets a 14,000-mile road test. Apple/Franklin lawsuit and ROM copyright. Christmas shopping for micros. Small business automation. Magic/L challenges Basic. Hegel versus videotex.
268 The Gamer’s Cafe Rodney Gambicus From Rodney’s “Misc.” disk.
274 Fun House Richard Ramella Santa and Leon host the Fun House Christmas pageant.
280 Feedback Loop Terry Kepner Reader’s questions answered
292 Reload 80 Amee Eisenberg CRC errors: when disks lose control.
296 New Products Plantrac. Floppy Pockettes. Minuteman. Programmer’s Pipeline. Infidel. Micro Matrix II. Dancing Sailors. Volksmodem. Paperwork. Brainstormer. Video Filters. RamPak. Surface Plot. Byte Bat.


        
80 Microcomputing – 1983 Special Anniversary Issue

Volume
# xx

Date
1983

Load-80
Yes

Happy, Happy Birthday 80
8 Proof Notes The editors look at three years of 80 Micro.
12 A Look Back David Lien Remembrance of things past and ruminations on things to come.

Know Your System
16 Assembly-Language Primer Bill Barden, Jr Bored by Basic, but unsure about taking the plunge to Assembly language? Bill Barden may give you just the encourangement you need.
28 Word Processing Guide Dan Robinson Word processors ease the task of producing letters and manuscripts, but you must find one that fits your system and your needs.
32 The Data Base Explained Wynne Keller Introduction to data bases-everything you need to know explained in plain English.
40 Insure Your Computer Thomas McDowell Remember to purchase insurance for your computer. You’ll need it when lightning strikes!
44 Disk Mysteries Revealed Michael F Morra Debating on whether toupgrade to a disk system or keep your faithful cassette player? If you have any doubts, read this article.
50 Binary Breakout Richard E Esposito Now you can understand the language of your Model I, III or Color Computer. It’s simple.
56 Nine Programming Tricks David D Busch Try these shortcuts for faster Basic programming-easier backups, macro commands, renumbering, cross-referencing, and block moves.
60 The Sum of Its Parts Spencer Weersing Acquiring proficiency at writing a Basic program requires first thinking through the program and then outlining the needed steps.
70 Linear Programming David Clapp This method is usually used by mainframes to solve complex problems. Dr. Clapp gives a simple demonstration so you can use it, too.
78 Model III Relative Files Andrew Rucks The drawbacks of direct access files can be overcome by using relative files accessed by the scatter technique.
82 Towards Better Programming John T Blair Improve your programming technique by applying these straightforward methods-Program Development Languag eand the scientific Method.

Model I/III
96 NODOS80 Thomas Quindry Who says cassette users can’t have some of the features of disk operating sytems? It certainly isn’t Tom Quindry or 80 Micro.
128 Storm Tracker Charles C Williams Forecast the landfall coordinates of an oncoming tropical storm or hurricane to see how much danger the storm poses to you.
130 6502 to Z80, Bit by But David S Peckett If you’ve. ever wanted to convert those 6502 Assembly language programs to run on a Z80 computer, here’s a piece on how it’s done.
144 Super Spooler Ron Balewski Here is a solution to the problem of being unable to use your computer while it is printing.
148 Election Robert Jacobs Election teaches students about campaigning by introducing them to several facets of elections such as budgets and stands on issues.
156 To Boldly Go … Joey Robichaux A unique application for your microcomputer, this menu-driven Basic package will help amateur astronomers and other stargazers.
164 Datascope Dennis Ridgway Like an oscilloscope for software, Datascope reads data bit by bit, letting you recover data from glitched tapes or see data on tape.
176 Pick a Card … Norman Efroymson This program won’t pull a rabbit out of a hat, but it will amaze and puzle your friends.
178 AND.. .OR.. .NOT Jeffrey Myers Boolean logic is a powerful programming tool. Here’s how it works and what it’s used for.
186 Permanent Sound Richard C McGawey Avoid cluttering your work space with wires and cables and install this internal sound mod.
190 Android Picture Gallery Mike Cook Here’s a new game for you! It seems that there are no humanoids left on the planet Rehabul. Who will take over dusting the art gallery?
196 Using DEFFN Ralph Rideout The DEFFN statement lets you create your own functions. Using it simplifies programming and saves memory.
200 Categories Glenn Collura Categories is playable without a Computer, but this program adds new dimensions to the game.
208 Number Your Program Listings Joe Edwards It’s much easier to handle those long, long program listings when they are numbered.
213 Brainstorm Richard Ramella This game challenges you with number sequences, just like the IQ tests YOU took in school.
216 More Memory for Peanuts James Schaeler Adding memory to your Model III is not as hard as it seems, so don’t be intimidated. But remember, you may void your warranty.
220 Fast Tape Operating System Michael Pollard FTOS lets you use disk commands to increase the speed of storage time in your cassette system.
228 The Glamour of Grammar George Stone So your students don’t appreciate the finer points of grammar? This program will let them learn the rules and have fun at the same time.
238 Avoid the Danger of Dirty Disks David Grimes Keeping a disk system clean has never been easy.
240 Making Labels William Nelson Producing custom labels has never been easier. Written in Basic, the program can easily be modified to work with just about any printer.
244 Two-Person Space Bomber Dale Chermak In Space Bomber, one player defends his planet from bombs being dropped by his opponent.
253 Dual-Voice Music Synthesizer Lee Morgenstern Those of you who are bored with your computer playing only one note at a time can learn how to get multiple notes through software.
264 Flexcat, Your Basic DBM Lawrence A Terre Wouldn’t it be nice to use one database manager for all your filing and retrieval needs? Flexcat fits the bill.
274 Math Hangman Tim Knight Math Hangman is a game that entertains you as it helps you develop your mathematical skills.
278 Smartcat Irwin Rappaport The Lynx modem and Emterm software make an impressive cormmunications package. Smartcat makes this combination even more powerful.
284 Long, Long Division David Cecil Teach your kids (or yourself) long division. Your Model I makes a good patient tutor.
288 Almazar I Winston Llamas Visit the 72 rooms of Almazar Part I, collect the treasure, and reach the next dimension.
298 Rapid Random Access Karl Townsend Find specific records quickly, even if your files contain 5,000 or even 10.000 records.
300 Aulo Dial/Auto Answer Alan Moyer This addition to your modem will make your computer answer and dial your phone automatically.
306 Fly Like an Eagle Ian Corm This simulation of a sailplane race can show you the excitement of being at the controls.
316 Catalog Your Files Jane Goodale You need not hassle with filespecs any longer. Instead, install this cataloging routine in programs that maintain sequential filespecs.
320 Directory Information, Please Charles Knight No disk directory can suit everyone’s needs. But this one, written for LDOS, has enough flexibility to be adapted with relative ease.
326 Tiger Graphics Dan Robinson The IDS Paper Tiger is an excellent graphics printer. Here are some graphics techniques in Assembly language. Basic, and Pascal.
566 Cobol on Your 80 Sam Perry Learning a new computer language can be a long tedious process, but this article leads you painlessly into the confusing world of Cobol.
392 Disk Tiny Pascal David M Silver Did you have to abandon all your cassette-based Tiny Pascal programs when you upgraded to a disk system? David’s got the answer.
398 Reload 80 Art Huston A primer on how to use this shortcut to getting the most out of this issue of 80 Mlcro.

Color Computer
408 Teach Your CC New Words Allen Curtis Add commands, statements, and functions to Color Basic and gain more computing power.
416 Games in Color Robert Toscali These games for the Color Computer will test you, amuse you, and frustate your friends!
427 3-D for Real Dennis Bathory Kitsz Until now, 3-D has been a misnomer for CC graphics. Out CC expert has done the groundwork for real 3-D. It’ll come out and grab you!
436 Something-or-Other 3-D Jake Commander With rgeat perseverence, Jake Commander has come up with this steroscopic 3-D program that features a rotating cube in two colors.
440 Solitary Maneuvers James Wood In this follow-up to Colorful Maneuvers, the computer is the opponent.
442 Colorful Language Instruction Alan F Lacy and David Gorden The Color Computer can be a useful tool in language instruction. Here’s a graphic depiction of how the mouth makes certain sounds.
469 High-Hes Alphanumerics for the Color Computer Scott Norman Make up your own character sets in high resolution on a TRS-80 Color Computer with 16K.
472 Teach Your Computer to Talk Richard Seymour What will your Color Computer’s first words be? Here’s a step-by-step method in Assembly languageto get vou and vour CC speaking.
478 Five Games for 4K James Wood Don’t despair if your Color Computer has only 4K of memory; you can still play graphics games.
482 Reconcile with Color David Dacus Organize your checkbook and reconcile bank statements with this Color Computer program.
486 Expanded Color Capabilities James Wood The Color Computer can now display green, blue, red, and black on the screen at one time.

Index
488 80 Index, 1980-1982 80 Micro has published hundreds of articlesand reviews in the past three years. Here’s a list of them.
400 Load 80 Index Here’s a handy list of all programs on Load 80.
526 User Groups Want to find theclubs in your area? Check this out.

Model II
530 The Art of Encoding and Decoding Karl Andreassen If you would like to keep private correspondence private, this program is for you.
536 BRKSEL Jim Barbarello What could be worse than accidentally pressing the break key when running a Basic program on your Model II? Worry no more by disabling break using Debug.
538 Model II Business Bar Graphs Richard Harkness Your Model II can produce bar graphs like those the Models I and III generate.
546 Mod II Disk Index Charles R Perelman Indexing your Model II disks will eliminate confusion the next time you look for a program.
554 Compress, Mod II Style Charles R Wood Are your Model II programs too long? This program takes out spaces and remarks.
558 Take a Letter James Barbarello Draw large block letters using regular size letters, any printer, and a Model II.
564 Investment Advisor Charles R Perelman Determine the profit margin of an investment by computing its internal rate of return.

Peripherals
572 How to Buy a Printer Jim Hansen Epson, IDS. Okidata, NEC-which do you choose?Jim Hansen is an industry insider who can give you good advice when printer shopping.
578 Suppress Those Demon Transients G Michael Vose Transients. surges, power outages. and the like can destroy data and damage your hardware.
582 Into the 232 Howard Miller Ever wonder about the RS-232 port on the back of your micro? Just how does it receive and send data? Stay tuned. Howard’s got the scoop.
586 Ribbon Rewind Dan Keen and Dave Discherl Save money by rewinding muitistrike carbon ribbons for your daisywheel printer.
588 Homebrew Green Screen James Conroy So you want to add a filter to your video screen, but you think they are too expensive? Follow these directions and build your own.
590 Coping with Cassettes Richard Whitney You will peacefully co-exist with your casselle recorder if you follow these tips and perform these maintenance procedures.
592 Ultimale Joystick Interface Donald E Michel and Art May This joystick interface is not only cheap, it is easy to buiid and program for.

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