80 Microcomputing - 1983

Page Index

80 Microcomputing - Volume 36 - January, 1983

Issue Information:

Volume:36
Date:January 1983
Load-80:Yes
Pages:470
Size:139,605,421
TOSEC:80 Microcomputing v036 (1983)(1001001 Inc)

Table of Contents

Features:

74The Creator by Bruce Tonkin
Some myths die hard, such as the quickest way to riches is to write a super program.
100Forthwrite by Wynne Keller
The second generation of word processors is upon us. One newcomer, Forthwrite, deserves to be ranked with the best of them.
104Selling Your Software by 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.
117The Art of Documentation by G Michael Vose
Here's a step-by-step explanation of how to write clear, concise manuals for your programs.
154How to Copyright by 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
156Planetary Orbit by [NEED TO FIX]
If you're interested in knowing a planet's location at some time in the past or future, use this program to calculate its position.
110The Great Beyond by Terry Kepner
This version of Basic is much more powerful than Microsoft's. Use it to write sleeker code.
126Mailing List Compiler by Gerald Sprouse
Your Color Computer can be used to produce address labels and maintain mailing lists.
132Hardware Hacker-Part IV by Philip M Van Praag
In his finale, Philip M. Van Praag ties together three devices to make up a powerful Peripheral Support Interface.
146A Pascal for All Seasons by Bruce Powel Douglass
If procedure-oriented languages intrigue you, Alcor Pascal may be the answer to your needs.
178Block Titles for the Mod II by George Berman
Print block letter titles on your fanfold printouts to make them more readable.
180The Garbage Collector by Bob Snapp
The price you pay for strings with variable lengths can be a bargain if you collect your garbage efficiently.
188Lunar Lander by Nat R Koch
Games are rarely written for the Model II but here's one that lets you make a lunar landing.
192Dogfight by Ralph White
Envision yourself as a flying ace sitting in a cockpit shooting the enemy's biplanes.
197Partially Disabled Break by Stephen Mills
When you invoke the executioner in **TRS-80** unintentionally, you'll be glad to have this program on hand.
200New Tricks from an Old Dog by 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.
216Outbreak by Tom Hanson
A Basic version of the popular arcade game featuring the amazing bouncing ball.
221Judge 80 by 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.
227Denominational Computation by Gerald Sprouse
You don't have to be a Reverend to benefit from this financial statement program.
232DSAVE by John Hodgson
A way to take the risk out of saving disk files to tape.
238Windchill Determiner by John L. Cranmer, Jr
Now you have a way to determine just how cold you will be on those frosty winter mornings.
242Getting the Most from the Model II by La Verne E Olney
Use supervisor calls and other tricks.
252CC Monitor by Sergio Zigras
Tired of machine language forcing you to PEEK and POKE your Color Computer to death? Read on!
258Interrupt Your 80 by Douglas C Fisher
Without a hardware mod, your 80 is immune to rude interruptions
268Building a Better Adventure by Dan Cataldo
Knowing about parsing can help you create The Great Microcomputer Adventure Game
270Optimize Your Code by Robert W. McTernan
Make your favorite programs run faster with a little help from a stop-watch
276PENRAM by Roxton Baker
A machine-language utility to edit random access memory.
292Repairing a Disk Crash by 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.
298Discipline for the DIR Command by Gerry Schechter
Confused by the order your Color Computer prints the director? This utility makes your directory look the way you want it to
302APL Primer - Part II by 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
310Cassette Merge by 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.
316Bit Smitten - Part IV by Jay Chidsey
Good looking title and credit pages for your programs are easy to set up with this utility
324Tape File Manager by 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.
342DROSSDOS/8E by David Busch
Since operating systems can be inadvertently frustrating, KTI's faithful observer asks, "Why not stop the pretense and make them purposefully frustrating?"
348When OK Isn't by Ed Deming
Tired of the same old prompt?
352BASTEP by Alan D Smith
Catching bugs a step at a time
358A Port-Mapped A/D Converter by M Parris
Monitor your freezer and play Pong too!

Departments

8Remarks by Wayne Green
The need for more secure computer systems and a call for better **TRS-80** graphics.
12Proof Notes
Custer's Revenge invades the sanctity of Microcom
16Input
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.
30Debug
Colorful Computer fixes. Escape from SuperMaze. Curing Jack O'Lantern droll
34Aid
Credit union software. Smith-Corona and Scripsit. Request for government general ledger program. LEX 11 schematic.
37Commander 80 by 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.
40The Gamer's Cafe by Rodgney Gambicus
The odyssey ends up in Vegas.
410Reload 80
412Fun House by Richard Ramella
Leap Year, Sands of Time, Perpetual Calendar
425Applications by Dennis Kitsz
Putting the final touches on the build-your-own LNW
366Calendar
435Index to Advertisers
436New 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.
4501982 Index to Articles
4601982 Index to Reviews
465Index to LOAD80's
45Reviews
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.
72Review 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.
370News
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.
394The 1982 Reader's Choice Awards
May we have the envelope, please ...
400Feedback Loop by 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
Size:127,783,360
TOSEC:80 Microcomputing v037 (1983)(1001001 Inc)

Table of Contents

Features:

38The Next Step by Hardin Brothers
A new column on combining BASIC and machine language
40Suite 16 by Dan Keen and Dave Dischert
A new column on the Model II and II/16
166States and Capitals by 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.
178Spelling Challenger by Larry Krengel
With these three word games, your kids can learn their spelling words while having a good time.
184Math Fun by 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.
208Michael's Game by 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.
212Refrigerator Controller by 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.
237Horse Race II by Danley Christiansen
This revision of a previously published program makes it a more useful educational tool.
270Twinkle, Twinkle, Little Star by Bill Grout
With a little help from you and some imaginative graphics, the **TRS-80** becomes a poet.

Young Programmer Awards

84Introducing the Young Programmer' by xs Awards
We've known for some time kids make up a significant portion of our readers, but we weren't ready for this!
85Quest for the Key of Nightshade by David Schmidt (Grand Prize)
An adventure written in Assembly language.
96Project Deep Dive by Michael John Lake (First Place, 14-18)
Guide your sub though a winding tunnel while trying to avoid mines and torpedo launchers.
104Music Composer by Carl Huben (First Place, 11-130
Store up to 200 notes on your Color Computer and save the music you've created on tape.
108Super Draw by Terry Myerson (First Place, 10 and under)
Make your CRT a sketch pad, save your drawings, and recall them at a later date.
116TRS-Turtle by Larry Brackney (Second Place, 14-18)
Now bring this famous teaching tool into your Tandy machine.
124The Lair of Kraken by Beth Norman (Second Place, 11-13)
Travel through an underwater palace battling the abominable Kraken.
132Byte Cycles by Nathan Miller (Second Place, 10 and under)
A joystick game a la the light cycle races in TRON
134Boxer by Lloyd Kupchanko (Third Place, 14-18)
Test your pugilistic skill in this nifty game involving you against the computer
149Foreign Flag Quiz by Jennier Neidenbach (Third Place, 11-13)
Test your knowledge of world draperies.
152CASS-80 by Scott Steele (Third Place, 11-13)
Have your own cassette-based bulletin-board system.
160Math Countdown by Adam Wells (Third Place, 10 and under)
A computer class programming assignment turns into a valuable learning tool.
198The Intersoft C Compiler by Rowland Archer
Third version of the C language incorporates some of the ideas of Pascal and Assembly and provides some features borrowed from UNIX
218Son of Pilot by Randy Hawkins
If you've wanted to use Pilot, but it did not work on your system, try this altered version.
224Cassette Index by Andrew Sensicle
If you want to save time when loading programs, try this index for the Color Computer.
228The Model 16 by Jim Hawkes
An in-depth review of Tandy's 16-bit machine.
244The Art of Encoding and Decoding by Karl Andreassen
Use your computer to translate your messages into an indecipherable mess; then with this program, you can translate them back again.
252LP VII Screen Printout by Sege Calmettes
Reproduce the video display on paper.
254Fun for the Younger Set by Safi Bahcall
Introduce your 5-year-old to the **TRS-80** with these math and word programs
256Covergem by James A Sanford
Adjust the color and alignment of your color monitor with this Color Computer program.
260APL Primer - Part III by Margaret M. Grothman
This month's installment contains a bonanza of functions. To name a few: logical operators, shaping indexing, and reduction.
280Mod II Random Access by Terry Kepner
You can benefit from this author's migraine headaches cased by Model II mishandling of disk data.
282Drop your Color Computer into Disk Drive by Robert Nicholas and Philip Martel
Discover life in the fast data lane by putting the pedal to the metal oxide.
296Screen Format Program Generator by Joel Belcher
Save yourself the trouble of figuring screen locations, field prompts, and input fields and let your computer do the work for you.
310Peek Pong by Charles Gulick
If you thought fast-paced games couldn't be written in Basic, peek Pong should surprise you
314Color Life by Larry F. Perry
Watch communities of organisms develop with the Game of Life for the Color Computer.
328The Input Specifier by G. Schweizer
A subroutine allowing editing of input and saving your programs from crashing.
332Color Computer Merge by John Heusinkveld
Concatenate your programs on tape.
334Transmitter by Jon Mark O'Connor
Merge Transmuter with another program and you can relabel any and all program variables.

Departments

8Remarks by Wayne Green
The 16-bit fad.
10Proof Notes
Piracy becomes a political issue.
12To Copy or Not to Copy.
A reader offers a helping hand and raises a commotion.
18Input
The new exciting PC-2. better than On-Break GOTO. Okidata 83A problems. The meaning of baud.
28Aid
Engineering software. Last One questions. Interfacing problems Down Under. Model III Cassbox? Scientific reconstruction of auto accidents.
30Debug
Bugs In Casino Draw Poker. Model III Graftrax. Digital Doodles. Tee for Six. Tax Estimator.
32Anniversary Correction by Charles P. Knight
Directory Information. Please correction. Here are the listings.
37Commander 80 by Jake Commander
Structured programming blues.
46Reviews
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 System. Microbuffer and MXPLUS make your Epson perform like never before.
71Review Digest
El Diablero-An Adventure Game. Telewriter, the disk version, Outhouse, Fan for the Color Computer, Roman Checkers, Tandy's Othello.
72Calendar
80The Gamer's Cafe by Rodney Gambicus
Wherein a sprite named Mercedes Silver helps Max and Rodney win back thevan from Nurse Lovelace.
342News
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.
364Copernica Mathematica by Bruce Powel Douglass
Aerobic mathematics.
374MONEY DOS by J.M. Keynes
First came the hotline, now the bulletin board.
380Fun House by Richard Ramella
Dice games called Show Up, Drop Dead, and Martinetti.
387Index to Advertisers
406Feedback Loop by 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.
416Reload 80 by Art Huston
The finer points of tape loading.
420New 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:438
Size:129,903,311
TOSEC:80 Microcomputing v038 (1983)(1001001 Inc)

Table of Contents

Features:

30The Color Key by Scott Norman
New column on Tandy's fabulous color machine!
74Computer Security with a Credit Card by 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.
112CP/M Cheap by 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.
124Your First Hardware Project by Jeff DeTray
Want to get your hands dirty with some hardware construction? Here's an easy starter project.
156Hardware Hacker's Tool Kit by Jeff DeTray
Take this helpful advice on compiling the essential tools to start your career as a **TRS-80** hacker
298Do-It-Yourself Computer by 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.
342Real World, It's About Time! by 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.

Business

136Inside AIDS-III by 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.
246Build a Better Budget by D. S. Kemball-Cook
The down and across grind becomes passe when you've got an 80.
276Reservation Cancellation by Arthur J. Welcher
An 80 makes a travel agent's work easy.
354Chart Maker by Stuart Ring
A bar graph to help you bring those figures into focus.

Communications

280Compac by 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

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

Games

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

Graphics

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

Home Hobby

310Music-80 by 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

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

Series

200APL Primer - Part IV by 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

150Testing Your New RAM by 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.
208Secret Ciphers by George Reardon
If you've always wanted to send confidential material to other users, try this public-key cipher system. It's practically unbreakable.
252Self-Modifying Programs by Robert D. Rlfkin
Get rid of clumsy duplications of code.
336Compress It by Franklyn D. Miller
Squeeze a 12K program into a 4K computer.

Tutorial

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

Utilities

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

Departments

278The Poop on PEEK by Steve Saisi
Use PEEK instead of INKEY$ on your Color Computer to give your tired arms a rest during fast games.
358Relocate Debug by Jerry W. O'Dell
If you like to hack up commercial programs, Debug may get in the way. So why not move it?
8Remarks by Wayne Green
The cost of software publishing.
12Proof Notes
Meet the average 80 Micro reader
14Input
Floppy talk, Model III memory map, recovering dead files, open cartridge surgery comment, Scripsit changes for the forgetful.
24Aid
Looking for KBFIX/RELO. Anyone have a-bar code reader? Call for Model II education programs. Help needed for Qume Daisy Wheel proportional spacing.
26Debug
Take Color Computer differences in to account when using 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.
37The Next Step by Hardin Brothers
After mastering Basic, the next step is machine-language subroutines.
44Reviews
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.
73Review Digest
Space Castle. Astroball. The Word Processor complements Bible Research Systems' The Word. Profile.
364News
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.
388Medical Opinion by Phillip R Mills, M.D.
Medical data bases
393Fun House by Richard Ramella
Make your own adventure game
403Index to Advertisers
404Money DOS by J.M. Keynes
Large profits quickly without disaster.
408The Gamer's Cafe by Rodney Gambicus
While the gamers collect some z's, Stella continues the tale.
410Feedback Loop by Terry Kepner
Readers' questions answered.
420Reload 80
410Calendar
424New 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:422
Size:125,280,127
TOSEC:80 Microcomputing v039 (1983)(1001001 Inc)

Table of Contents

Features:

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

Sports

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

Games

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

General

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

Graphics

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

Hardware

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

Reviews

120Interpro Flexible Mailing List by 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.
198Random Basic and the Scribe Editor by Scott Norman
If you're a Color Computer owner using CC FLEX, these two programs from Computerware may be for you.

Series

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

Utility

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

Departments

8Remarks by Wayne Gree
Pocket pagers and the Model 16.
12Proof Notes
On the inevitability of Hot CoCo.
14Input
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.
24Powersoft on Piracy
In response to "To Copy or Not to Copy."
28Debug
Regress correction. "Easy Picture Editor" bug.
32The Color Key by Scott Norman
Turning your color machine into a home manager.
38The Next Step by Hardin Brothers
Relocatable machine-language routines.
46Suite 16 by Dan Keen and Dave Dischert
What's the real advantage of a Model 16?
48Reviews
Runcalc, Machine Language Disk I/O & Other Mysteries. To Catch a Mouse 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 printer. Autogrammer, a program generator.
338News
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.
364Fun House by Richard Ramella
Four April Fools' jokes for your computer
370Calendar
372Money DOS by J M Keynes
Choosing a broker.
376Feedback Loop Special Edition by Terry Kepner
SuperScripsit
388Feedback Loop by Terry Kepner
Reader's questions answered.
398The Gamer's Cafe by Rodney Gambicus
Catching up on the mail while gassing up at Little America.
402Copernica Mathematica by Bruce Powel Douglass
A convert of Pascal.
404Reload 80 by Art Huston
Editor/Assemblers.
410New Products
Infostar data-base manager. Economic forecasting program. Amplot six-color plotter. Epson, Qume, Brother. and other drivers for Super Scripsit, 007 mciro. Genius high-resolution display. CP/M Revealed. Mel the Memory Mogul. SoundTrap silences your printer. Cyberchess lets you tackle the masters. Baseball-Stat. Half-height Tandon drives. Glare filter.
86Review 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.

80 Microcomputing - Volume 40 - May, 1983

Issue Information:

Volume:40
Date:May 1983
Load-80:Yes
Pages:404
Size:175,900,863
TOSEC:80 Microcomputing v040 (1983)(1001001 Inc)

Table of Contents

Features:

90The 80 Goes Color by James W. Cole
Color for the Model III
104Symmetrical Graphics by 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.
110Color Computer Light Pen by 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.
146Software Buyer's Guide: Graphics Software
218The Printer as a Paintbrush - Part I by Mike Keller
Learn to use dot-addressable graphics
230Profile II Modified by John B Ford
Make this classic program easier to use
258Hardware Buyer's Guide: Printers
278Hardware Buyer's Guide: Plotters
294Dvorak Meets Scripsit by John T. Phillipp
Who needs QWERTY anyway?

Business

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

Education

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

Games

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

General

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

Graphics

198Rapid Prints by Delmer D. Hinrichs
Forget tedious mathematical calculations. Draw hundreds of figures and shorten printing time with these Fortran and Basic programs.
21240K Color Basic by 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?
2363-D Printer Graphics by Delmer D. Hinrichs
Do you have a dot-matrix printer than can plot bit-mapped graphics? These fancy peaks and waves will make it jump through hoops.
246A Turn of the Screw Revisited by Lynn Davis
Here are "A Turn of the Screw" graphics for the Color Computer. Can you get the screw to turn?

Home/Hobby

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

Reviews

133The Model 12 by 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.
282Double-Good Double-Density by 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

306LISP: Basically Speaking - Part III by 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

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

Departments

8Remarks by Wayne Gree
A call for the Shack to make a comeback
12Proof Notes
On being thick and Jake's departure
14Input
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.
22Aid
$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.
26Debug
Campaign funding irregularities in "Election." No new tricks if advice of old dog heeded. CASS-80 mistakes. Listing mix-ups. Sound for draw poker found. ERROR GOTO. Missing listing. CASS-80 miscues.
28The Next Step by Hardin Brothers
Passing values between machine language and Basic.
38Commander 80 by Jake Commander
What is this thing called Tandy?
41The Color Key by Scott Norman
More on Homebase program for CoCo.
46Reviews
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.
86Review 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.
88Calendar
334News
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.
357The Gamer's Cafe by Rodney Gambicus
Rodney and his crew arrive in Iowa City.
360Reload 80 by Art Huston
An explanation of DOSPLUS
362Fun House by Richard Ramella
Fun generating mazes
371Index to Advertisers
372Take II
QuickCalc for the Model II
380Feedback Loop by Terry Kepner
Reader's questions answered.
392New 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:374
Size:103,485,299
TOSEC:80 Microcomputing v041 (1983)(1001001 Inc)

Table of Contents

Features:

68Drivers and DCBs by Jery Lindsly
Are you curious about machine-language programming? The ROM subroutines explained and demonstrated here will help you learn.
78Apple Core Emulator by 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.
104Basic, Faster and Readable - Part I by John Corbani
If you remember some of the rules you learned about grammar so long ago, then you should be able to use Basic effectively and efficiently.
116The 80 Goes Color - Part II by 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.
134Software Buyer's Guide: Utilities
173Assembly-Language Shortcuts - Part I by Bob Bowkey
Bowkey introduces his series of articles with simple tricks and shortcuts to make writing Assembly-language programs an easier process.
200Build an EPROM Programmer by William Mahoney
Would you like to have all your favorite programs in a ROM pack? Do just that quickly and cheaply and for yourself.
234Hardware Buyer's Guide
Disk Drives and Disks
244Programming the Model 16 by Dan Keen and Dave Dischert
The 16-bit **MC68000** microprocessor is flexible, executes instructions faster than ever before and, best of all, isn't hard to understand.

Games

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

Graphics

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

Hardware

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

Techniques

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

Reviews

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

Series

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

Tutorial

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

Utilities

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

Departments

6Remarks by Wayne Green
Tandy's decision not to tubewhip consumers.
8Proof Notes
10Input
Readers write to 80
22Debug
80 programs corrected and improved.
24The Next Step by Hardin Brothers
Tinkering with the Basic in your ROM.
32The Color Key by Scott Norman
Color keyboard, Telewriter improvements, 64K CoCo.
38Suite 16 by Dan Keen and Dave Dischert
Disk-not-ready error tackled.
40Reviews
Deadline. MicroTerm. Bable Terror. Color Pilot. Everything You Always Wanted to Know About Home Computes, D-92 printer. Telewriter 64. And more.
67Review Digest
**TRS-80** products reviewed in other publications.
208News
Model 100 released. Microfloppy war. Tandy unfazed by market share loss. Spiritual programs for the CoCo.
322Take II
I/III programs converted to Model II.
328Calendar
330Fun House by Richard Ramella
Traveling games.
336Reload 80 by Aimee Eisenberg
New disk transfer system
340The Gamer's Cafe by Rodney Gambicus
Askew in Sandusky
344Feedback Loop by Terry Kepner
Readers' questions answered.
358New 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 Collection. 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:390
Size:109,144,302
TOSEC:80 Microcomputing v042 (1983)(1001001 Inc)

Table of Contents

Features:

78La Plume de Ma Tante by 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.
94A Pascal Primer by J.B. Harrell
Learn Pascal while teaching your micro to play cribbage.
186Fortran Breakout by J.B. Harrell
This popular game appeared in Pascal in our July 1981 issue. Here it shows the power and speed of Fortran.
220Logo for the CoCo by Molly Watt
Radio Shack's Color Logo brings computer programming to your kids.
228A History of Programming Languages by Alan Nelbauer
This survey traces dialects development from the days of wires and switches to the modern programming era.
297Directory to Hardware Manufacturers and Distributors
If someone makes it or sells it, we've got it

Business

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

General

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

Hardware

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

Reviews

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

Technique

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

Tutorial

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

Utilities

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

C * Notes

158Tandy's Towering Totable by John Berman
The definitive review of the definitive portable computer.
166People Are Talking by John O. Mello Jr.
The Model 100 has industry insiders puzzling. Here's what they say about Tandy's newest.
169But Will It Fly? by John P. Mello Jr.
Is it safe to take your 100 on plane trips? 80 Micro checks with the airlines.
170Model 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

6Remarks by Wayne Green
Praise for the Model 100.
10Proof Notes
The Model 100 has changed the world and 80 Micro.
12Input
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**.
20Aid
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.
22Debug
An impediment in Lisp. Peg Legsand Tack-Gun CoCo bugs. Michael's Game in color.
24The Next Step by Hardin Brothers
Scroll, don't flip.
32The Color Key by Scott Norman
CoCo languages and Colorkit improvements on Basic.
38Reviews
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.
75Review Digest
What others are saying about **TRS-80** products.
77Calendar
332News
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.
342Take II
Black Friday for II/12/16 owners.
346Fun House by Richard Ramella
A festival of mini-programs.
356The Gamer's Cafe by Mercedes Silver
Letter to a Radio Shack dealer.
360Feedback Loop by Terry Kepner
Readers' questions answered.
370Reload 80 by Amee Eisenberg
To catch fleas, think like a computer.
374New 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:358
Size:101,991,559
TOSEC:80 Microcomputing v043 (1983)(1001001 Inc)

Table of Contents

Features:

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

Games

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

General

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

Reviews

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

Techniques

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

C * Notes

200Five Portable Programs by 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.
209Nothing's Perfect by Ken Barbier
Even the Model 100 has a few drawbacks.
210Text Meets WordStar by Ken Barbier
Sending Model 1000 ties to the leading **CP/M** word processor.

Departments

6Remarks by Wayne Green
Mini moguls and the micro market.
10Proof Notes
Mad Max on the Gamer's Cafe philosophy.
12Input
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.
24Aid
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.
26Debug
Text editor correction. **EPROM** programmer schematic. Commands for Color Disk Directory. Dreidel debug debugged.
30The Next Step by Hardin Brothers
Keyboard secrets revealed.
40Suite 16 by Dan Keen and Dave Dischert
A look at **TRSDOS** - all 11 versions.
44The Color Key by Scott Norman
Games, graphics, and **3-D** trigonometry
50Reviews
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.
83Review Digest
Some other views of the **TRS-80** marketplace.
280News
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.
296Calendar
300Fun House by Richard Ramelia
Can you guess the Mystery Guest?
310Feedback Loop by Terry Kepner
Questions answered, no waiting.
315Young Programmer's Contest
The scoop on entering our 1983-84 competition.
320Take II
A favorite from last year's games issue.
324The Gamer's Cafe by Rodney Gambicus
Marching through Georgia.
328Copernica Mathematica by Bruce Powel Douglass
Eigenvalues by the power method.
340Reload 80 by Amee Eisenberg
Overcome /SRC anxiety
344New 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:358
Size:153,012,432
TOSEC:80 Microcomputing v044 (1983)(1001001 Inc)

Table of Contents

Features:

74The Business of Planning by Ronal A. Cangro
Don't be a financial gambler - use Monte Carlo analysis to defeat business problems.
128Project Assessment Technique
Calculate the rate of return and plan business alternatives
152Business Bazaar
A buyer's guide to profitable software.
180Satellite Word Processing by Henry Aldrich
Use CoCos as terminals while you Model I/III/5 handles the printing chores.
184Spacemap by Hubert C. Bormann
A track-by-track disk directory for Model I owners.
22080 Micro's Second Annual Reader's Choice Awards
Your chance to pick the winners in **TRS-80** software.
230Talk to the Big Guys by Douglas Payne
Use this dumb terminal program to say hello to minis and mainframes

Business

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

Graphics

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

Hardware

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

Reviews

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

Technique

116Saving Strings by David M. Keil
Even the fastest typist can't outrun this **INKEY$**

Tutorial

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

Utility

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

Departments

6Remarks by Wayne Green
Anatomy of a merger.
10Proof Notes
Coming to terms with terminology.
12Input
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.
20Aid
Model I speedup. Advertising software. Electric Pencil lowercase. Alcor Pascal assistance.
22Debug
Fixes, patches, corrections, and amendments.
24The Next Step by Hardin Brothers
Low memory and restart vectors.
30The Color Key by Scott Norman
Plot your expenses with this CoCo graph program
38Reviews
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.
71Review Digest
Outside opinions of the **TRS-80** marketplace.
72Calendar
280C * Notes
A portable disassembler, elapsed time clock, foreign exchange, and tips on writing your own Model 100 conversions, plus an update for would-be fliers.
292News by
**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 museums. June in Massachusetts.
304The Gamer's Cafe by Rodney Gambicus
Investing in Florida real estate
308Feedback Loop by Terry Kepner
Our columnist fields your questions.
320Reload 80 by Amee Eisenberg
Making business software decisions.
324Fun House by Richard Tamella
Back to school, Fun House style.
331Young Programmer's Contest by
How to enter the second annual extravaganza.
332Take II by
A Model II mailing list.
338New Products by
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:358
Size:168,426,250
TOSEC:80 Microcomputing v045 (1983)(1001001 Inc)

Table of Contents

Features:

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

Games

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

Hardware

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

Reviews

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

Science

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

Technique

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

Tutorial

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

Utility

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

Departments

6Side Tracks by Eric Maloney
Copyright, piracy, and the **TRS-80** market.
8Proof Notes
Science for the micro masses.
10Input
Speeding up Andreassen's cipher. CoCo Robot Reader. **Z80** versus **68000**. Who is Suzuki Hayashki? Structured Basic debate. Scripsit and Pencil Plus patches. Logo computations. Playing Pascal cribbage. Comal.
20Aid
Missing issues. Model I Vidtex wanted. Law enforcement assistance. **Graftrax** chip. Stringy editor/assembler.
22Debug
Fixing Strip Blackjack and Profile File Transfer.
24The Next Step by Hardin Brothers
Restoring June's Model III Restore Patch.
36The Color Key by Scott Norman
Indulging a passion for mathematics.
44Suite 16 by Dan Keen and Dave Dischert
The faster master oscillator.
48Reviews
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**
87Review Digest
What they're saying about **TRS-80** Products.
88Calendar
266C*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.
286News
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.
302Reload 80 by Amee Eisnenberg
**UTerm** and memory error messages.
304Copernica Mathematica by Bruce Powel Douglass
Human and machine vision systems.
314Fun House by Richard Ramella
Learn Spanish, states and provinces, and the times table.
316Young Programmer's Contest
This should be even bigger than last yearsx.
324The Gamer's Cafe by Rodney Gambicus and Charles C. Edwards
A Florida condo and the Temple of Apshai.
330Feedback Loop by Terry Kepner
Questions, answers, and occasional opinions.
340New 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
Size:149,755,303
TOSEC:80 Microcomputing v046 (1983)(1001001 Inc)

Table of Contents

Features:

94Hello Bar Codes, Goodbye Keyboard? by Hermes S Mendez
Optical scanning for accurate data entry - grocery stores are only the beginning.
104Bars and Stripes Forever by Davey S Thornton
A look at industrial bar codes, with three popular styles for your Model III and Epson **MX-80**
114Check-Out UPC's by Davey S Thornton
Print out **UPC** codes with you Model III and **MX-80**
128Decoding Bar Codes by 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.
140Graftrax Art Palette by Franis S Kalinowski
Your Model I/III and an Epson can team for full-color printouts
212Using Unix-Xenix - Part I by James Hawkes
First of a series on the 16-bit multi-user standard.
216Real World Control - Part I by David Englehardt
Make your Model III into a home safety watchdog.
296Cafe Expressor by The Gamer's Cafe
One-line games that astounded the judges.

Business

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

Games

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

Reviews

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

Technique

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

Tutorial

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

Utilities

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

Departments

6Side Tracks by Eric Maloney
Whie the Big Four are the Big Four.
8Proof Notes
How to catch bar code fever.
12Input
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.
20Glossary
22Aid
CoCo **RTTY** wanted. Can you convert Profile to Profile II Plus? Model I **RSCOBOL** expansion.
24Debug
Tidying up Pascal, ending "La Plume de Ma Tante," and completing Model II Casino.
26The Next Step by Hardin Brothers
Don't forget variables and arrays.
36The Color Key by Scott Norman
Virtual disk programs for **64K** cassette users.
44Reviews
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.
89Review Digest
Other's opinions of **TRS-80** products.
264C Notes
A portable bonanza: Nag Analysis, songwriter's aid, robot control, daily numbers, and Model 100 correspondence.
277Calendar
278News
Revised Radio Shack management: an exclusive interview. Continued micro Industry chaos. Oklahoma modernblues. A different kind of terminal package. Radio Basic. Comptuer haute coutre.
294The Gamer's Cafe by Rodney Gambicus
Reunion In Baltimore and a Silver sibling.
299Young Programmer's Contest
Last call to send in your masterpiece.
300Fun House by Richard Ramella
Basic animation: growing trees and playing games.
310Feedback Loop by Terry Kepner
Expert answers to techie questions.
322Reload 80 by Amee Eisenberg
Now Load 80 speaks both source and object.
324New 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:324
Size:135,713,837
TOSEC:80 Microcomputing v047 (1983)(1001001 Inc)

Table of Contents

Features:

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

Hardware

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

Reviews

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

Tutorial

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

Utility

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

Departments

6Side Tracks by Eric Maloney
The so-called computer revolution.
8Proof Notes
Assembly lanuage without fear.
12Input
**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.
18Aid
Readers in need
20Debug
Talking to big guys, Black Friday, and Breakout.
22The Next Step by Hardin Brothers
Keep an eye on variable values
30The Color Key
One last look at the world of CoCo software.
36Suite 16 by Dan Keen and Dave Dischert
Multiple multi-user systems: **Arcnet** and **Xenix**.
38Reviews
The Statistician. **Newbasic 2.1**. Four Model 100 games. **CP/M** from Omikron. **MicroSpooler**. Monty Plays Scrabble. Businesspack +. Instant Assembler. Using Scripsit.
232C 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
251RAM Files
Monitor 100 and Foxfighter fixes. Calculator program
254News
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.
268The Gamer's Cafe by Rodney Gambicus
From Rodney's "Misc." disk.
274Fun House by Richard Ramella
Santa and Leon host the Fun House Christmas pageant.
280Feedback Loop by Terry Kepner
Reader's questions answered
292Reload 80 by Amee Eisenberg
**CRC** errors: when disks lose control.
296New 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

Issue Information:

Volume:N/A
Date:1983
Load-80:Yes
Pages:598
Size:149,899,616
TOSEC:80 Microcomputing v0SE (1983)(1001001 Inc)

Table of Contents

Happy, Happy Birthday 80

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

Know Your System

16Assembly-Language Primer by 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.
28Word Processing Guide by Dan Robinson
Word processors ease the task of producing letters and manuscripts, but you must find one that fits your system and your needs.
32The Data Base Explained by Wynne Keller
Introduction to data bases-everything you need to know explained in plain English.
40Insure Your Computer by Thomas McDowell
Remember to purchase insurance for your computer. You'll need it when lightning strikes!
44Disk Mysteries Revealed by 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.
50Binary Breakout by Richard E Esposito
Now you can understand the language of your Model I, III or Color Computer. It's simple.
56Nine Programming Tricks by David D Busch
Try these shortcuts for faster Basic programming-easier backups, macro commands, renumbering, cross-referencing, and block moves.
60The Sum of Its Parts by Spencer Weersing
Acquiring proficiency at writing a Basic program requires first thinking through the program and then outlining the needed steps.
70Linear Programming by 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.
78Model III Relative Files by Andrew Rucks
The drawbacks of direct access files can be overcome by using relative files accessed by the scatter technique.
82Towards Better Programming by John T Blair
Improve your programming technique by applying these straightforward methods-Program Development Languag eand the scientific Method.

Model I/III

96NODOS80 by 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.
128Storm Tracker by Charles C Williams
Forecast the landfall coordinates of an oncoming tropical storm or hurricane to see how much danger the storm poses to you.
1306502 to Z80, Bit by But by 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.
144Super Spooler by Ron Balewski
Here is a solution to the problem of being unable to use your computer while it is printing.
148Election by Robert Jacobs
Election teaches students about campaigning by introducing them to several facets of elections such as budgets and stands on issues.
156To Boldly Go ... by Joey Robichaux
A unique application for your microcomputer, this menu-driven Basic package will help amateur astronomers and other stargazers.
164Datascope by 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.
176Pick a Card ... by Norman Efroymson
This program won't pull a rabbit out of a hat, but it will amaze and puzle your friends.
178AND.. .OR.. .NOT by Jeffrey Myers
Boolean logic is a powerful programming tool. Here's how it works and what it's used for.
186Permanent Sound by Richard C McGawey
Avoid cluttering your work space with wires and cables and install this internal sound mod.
190Android Picture Gallery by 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?
196Using DEFFN by Ralph Rideout
The **DEFFN** statement lets you create your own functions. Using it simplifies programming and saves memory.
200Categories by Glenn Collura
Categories is playable without a Computer, but this program adds new dimensions to the game.
208Number Your Program Listings by Joe Edwards
It's much easier to handle those long, long program listings when they are numbered.
213Brainstorm by Richard Ramella
This game challenges you with number sequences, just like the **IQ** tests **YOU** took in school.
216More Memory for Peanuts by 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.
220Fast Tape Operating System by Michael Pollard
**FTOS** lets you use disk commands to increase the speed of storage time in your cassette system.
228The Glamour of Grammar by 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.
238Avoid the Danger of Dirty Disks by David Grimes
Keeping a disk system clean has never been easy.
240Making Labels by 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.
244Two-Person Space Bomber by Dale Chermak
In Space Bomber, one player defends his planet from bombs being dropped by his opponent.
253Dual-Voice Music Synthesizer by 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.
264Flexcat, Your Basic DBM by Lawrence A Terre
Wouldn't it be nice to use one database manager for all your filing and retrieval needs? **Flexcat** fits the bill.
274Math Hangman by Tim Knight
Math Hangman is a game that entertains you as it helps you develop your mathematical skills.
278Smartcat by Irwin Rappaport
The Lynx modem and **Emterm** software make an impressive cormmunications package. **Smartcat** makes this combination even more powerful.
284Long, Long Division by David Cecil
Teach your kids (or yourself) long division. Your Model I makes a good patient tutor.
288Almazar I by Winston Llamas
Visit the **72** rooms of Almazar Part I, collect the treasure, and reach the next dimension.
298Rapid Random Access by Karl Townsend
Find specific records quickly, even if your files contain 5,000 or even 10.000 records.
300Aulo Dial/Auto Answer by Alan Moyer
This addition to your modem will make your computer answer and dial your phone automatically.
306Fly Like an Eagle by Ian Corm
This simulation of a sailplane race can show you the excitement of being at the controls.
316Catalog Your Files by Jane Goodale
You need not hassle with filespecs any longer. Instead, install this cataloging routine in programs that maintain sequential filespecs.
320Directory Information, Please by 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.
326Tiger Graphics by Dan Robinson
The **IDS Paper Tiger** is an excellent graphics printer. Here are some graphics techniques in Assembly language. Basic, and Pascal.
566Cobol on Your 80 by 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**.
392Disk Tiny Pascal by 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.
398Reload 80 by Art Huston
A primer on how to use this shortcut to getting the most out of this issue of 80 **MIcro**.

Color Computer

408Teach Your CC New Words by Allen Curtis
Add commands, statements, and functions to Color Basic and gain more computing power.
416Games in Color by Robert Toscali
These games for the Color Computer will test you, amuse you, and frustate your friends!
4273-D for Real by 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!
436Something-or-Other 3-D by Jake Commander
With rgeat perseverence, Jake Commander has come up with this steroscopic **3-D** program that features a rotating cube in two colors.
440Solitary Maneuvers by James Wood
In this follow-up to Colorful Maneuvers, the computer is the opponent.
442Colorful Language Instruction by 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.
469High-Hes Alphanumerics for the Color Computer by Scott Norman
Make up your own character sets in high resolution on a **TRS-80** Color Computer with **16K**.
472Teach Your Computer to Talk by 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.
478Five Games for 4K by James Wood
Don't despair if your Color Computer has only **4K** of memory; you can still play graphics games.
482Reconcile with Color by David Dacus
Organize your checkbook and reconcile bank statements with this Color Computer program.
486Expanded Color Capabilities by James Wood
The Color Computer can now display green, blue, red, and black on the screen at one time.

Index

48880 Index, 1980-1982
80 Micro has published hundreds of articlesand reviews in the past three years. Here's a list of them.
400Load 80 Index
Here's a handy list of all programs on Load 80.
526User Groups
Want to find theclubs in your area? Check this out.

Model II

530The Art of Encoding and Decoding by Karl Andreassen
If you would like to keep private correspondence private, this program is for you.
536BRKSEL by 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.
538Model II Business Bar Graphs by Richard Harkness
Your Model II can produce bar graphs like those the Models I and III generate.
546Mod II Disk Index by Charles R Perelman
Indexing your Model II disks will eliminate confusion the next time you look for a program.
554Compress, Mod II Style by Charles R Wood
Are your Model II programs too long? This program takes out spaces and remarks.
558Take a Letter by James Barbarello
Draw large block letters using regular size letters, any printer, and a Model II.
564Investment Advisor by Charles R Perelman
Determine the profit margin of an investment by computing its internal rate of return.

Peripherals

572How to Buy a Printer by 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.
578Suppress Those Demon Transients by G Michael Vose
Transients. surges, power outages. and the like can destroy data and damage your hardware.
582Into the 232 by Howard Miller
Ever wonder about the **RS-232** port on
582Into the 232 by 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.
586Ribbon Rewind by Dan Keen and Dave Discherl
Save money by rewinding muitistrike carbon ribbons for your daisywheel printer.
588Homebrew Green Screen by 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.
590Coping with Cassettes by Richard Whitney
You will peacefully co-exist with your casselle recorder if you follow these tips and perform these maintenance procedures.
592Ultimate Joystick Interface by Donald E Michel and Art May
This joystick interface is not only cheap, it is easy to buiid and program for.