TRS-80 Magazine: 80 Microcomputing – 1983


80 Microcomputing – Volume 36 – January, 1983

Issue Information:

Click to Enlarge

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

74
The Creator by Bruce Tonkin
Some myths die hard, such as the quickest way to riches is to write a super program.
100
Forthwrite by 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 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.
117
The Art of Documentation by G Michael Vose
Here’s a step-by-step explanation of how to write clear, concise manuals for your programs.
154
How 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
156
Planetary 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.
110
The Great Beyond by Terry Kepner
This version of Basic is much more powerful than Microsoft’s. Use it to write sleeker code.
126
Mailing List Compiler by Gerald Sprouse
Your Color Computer can be used to produce address labels and maintain mailing lists.
132
Hardware 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.
146
A Pascal for All Seasons by 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 by George Berman
Print block letter titles on your fanfold printouts to make them more readable.
180
The Garbage Collector by Bob Snapp
The price you pay for strings with variable lengths can be a bargain if you collect your garbage efficiently.
188
Lunar Lander by Nat R Koch
Games are rarely written for the Model II but here’s one that lets you make a lunar landing.
192
Dogfight by Ralph White
Envision yourself as a flying ace sitting in a cockpit shooting the enemy’s biplanes.
197
Partially Disabled break by Stephen Mills
When you invoke the executioner in TRS-80 unintentionally, you’ll be glad to have this program on hand.
200
New 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.
216
Outbreak by Tom Hanson
A Basic version of the popular arcade game featuring the amazing bouncing ball.
221
Judge 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.
227
Denominational Computation by Gerald Sprouse
You don’t have to be a Reverend to benefit from this financial statement program.
232
DSAVE by John Hodgson
A way to take the risk out of saving disk files to tape.
238
Windchill Determiner by 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 by La Verne E Olney
Use supervisor calls and other tricks.
252
CC Monitor by Sergio Zigras
Tired of machine language forcing you to PEEK and POKE your Color Computer to death? Read on!
258
Interrupt Your 80 by Douglas C Fisher
Without a hardware mod, your 80 is immune to rude interruptions
268
Building a Better Adventure by Dan Cataldo
Knowing about parsing can help you create The Great Microcomputer Adventure Game
270
Optimize Your Code by Robert W. McTernan
Make your favorite programs run faster with a little help from a stop-watch
276
PENRAM by Roxton Baker
A machine-language utility to edit random access memory.
292
Repairing 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.
298
Discipline 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
302
APL 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
310
Cassette 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.
316
Bit Smitten – Part IV by Jay Chidsey
Good looking title and credit pages for your programs are easy to set up with this utility
324
Tape 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.
342
DROSSDOS/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?”
348
When OK Isn’t by Ed Deming
Tired of the same old prompt?
352
BASTEP by Alan D Smith
Catching bugs a step at a time
358
A Port-Mapped A/D Converter by M Parris
Monitor your freezer and play Pong too!

Departments

8
Remarks by 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 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.
40
The Gamer’s Cafe by Rodgney Gambicus
The odyssey ends up in Vegas.
410
Reload 80
412
Fun House by Richard Ramella
Leap Year, Sands of Time, Perpetual Calendar
425
Applications by 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 LOAD80’s
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 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:

Click to Enlarge

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

38
The Next Step by Hardin Brothers
A new column on combining BASIC and machine language
40
Suite 16 by Dan Keen and Dave Dischert
A new column on the Model II and II/16
166
States 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.
178
Spelling Challenger by Larry Krengel
With these three word games, your kids can learn their spelling words while having a good time.
184
Math 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.
208
Michael’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.
212
Refrigerator 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.
237
Horse Race II by Danley Christiansen
This revision of a previously published program makes it a more useful educational tool.
270
Twinkle, 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

84
Introducing 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!
85
Quest for the Key of Nightshade by David Schmidt (Grand Prize)
An adventure written in Assembly language.
96
Project 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.
104
Music 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.
108
Super 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.
116
TRS-Turtle by Larry Brackney (Second Place, 14-18)
Now bring this famous teaching tool into your Tandy machine.
124
The Lair of Kraken by Beth Norman (Second Place, 11-13)
Travel through an underwater palace battling the abominable Kraken.
132
Byte Cycles by Nathan Miller (Second Place, 10 and under)
A joystick game a la the light cycle races in TRON
134
Boxer by Lloyd Kupchanko (Third Place, 14-18)
Test your pugilistic skill in this nifty game involving you against the computer
149
Foreign Flag Quiz by Jennier Neidenbach (Third Place, 11-13)
Test your knowledge of world draperies.
152
CASS-80 by Scott Steele (Third Place, 11-13)
Have your own cassette-based bulletin-board system.
160
Math Countdown by Adam Wells (Third Place, 10 and under)
A computer class programming assignment turns into a valuable learning tool.
198
The 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
218
Son of Pilot by Randy Hawkins
If you’ve wanted to use Pilot, but it did not work on your system, try this altered version.
224
Cassette Index by Andrew Sensicle
If you want to save time when loading programs, try this index for the Color Computer.
228
The Model 16 by Jim Hawkes
An in-depth review of Tandy’s 16-bit machine.
244
The 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.
252
LP VII Screen Printout by Sege Calmettes
Reproduce the video display on paper.
254
Fun for the Younger Set by Safi Bahcall
Introduce your 5-year-old to the TRS-80 with these math and word programs
256
Covergem by James A Sanford
Adjust the color and alignment of your color monitor with this Color Computer program.
260
APL 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.
280
Mod II Random Access by 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 by 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 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.
310
Peek Pong by Charles Gulick
If you thought fast-paced games couldn’t be written in Basic, peek Pong should surprise you
314
Color Life by Larry F. Perry
Watch communities of organisms develop with the Game of Life for the Color Computer.
328
The Input Specifier by G. Schweizer
A subroutine allowing editing of input and saving your programs from crashing.
332
Color Computer Merge by John Heusinkveld
Concatenate your programs on tape.
334
Transmitter by Jon Mark O’Connor
Merge Transmuter with another program and you can relabel any and all program variables.

Departments

8
Remarks by 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 commotion.
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 by Charles P. Knight
Directory Information. Please correction. Here are the listings.
37
Commander 80 by Jake Commander
Structured programming blues.
46
Reviews
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.
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 by 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 by Bruce Powel Douglass
Aerobic mathematics.
374
MONEY DOS by J.M. Keynes
First came the hotline, now the bulletin board.
380
Fun House by Richard Ramella
Dice games called Show Up, Drop Dead, and Martinetti.
387
Index to Advertisers
406
Feedback 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.
416
Reload 80 by 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:

Click to Enlarge

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

30
The Color Key by Scott Norman
New column on Tandy’s fabulous color machine!
74
Computer 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.
112
CP/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.
124
Your First Hardware Project by Jeff DeTray
Want to get your hands dirty with some hardware construction? Here’s an easy starter project.
156
Hardware 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
298
Do-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.
342
Real 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

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

Communications

280
Compac 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

236
B$ Sharp by Charles R. Perelman
Use the Model II’s graphics capabilities to teach your child musical note recognition.
328
Scholastic Bowl by 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 by Steven Groll
Teach your 80 to find the greatest common denominator.

Games

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

Graphics

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

Home Hobby

310
Music-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

92
Quik-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.
101
Flex Your Color Computer by Scott Norman
The Flex Operating System is here to stay for the Color Computer.

Series

200
APL 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

150
Testing 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.
208
Secret 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.
252
Self-Modifying Programs by Robert D. Rlfkin
Get rid of clumsy duplications of code.
336
Compress It by Franklyn D. Miller
Squeeze a 12K program into a 4K computer.

Tutorial

176
Lisp: 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

190
CC 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.
226
Cassette Operating System by Richard W Castor
Data-base management wih a tape-based system.
260
Easy Loader by Thomas L Quindry
Basic to machine language to CLOAD
272
Seeker by 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 by Steve Saisi
Use PEEK instead of INKEY$ on your Color Computer to give your tired arms a rest during fast games.
358
Relocate 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?
8
Remarks by 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 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.
37
The Next Step by 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’ 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 by Phillip R Mills, M.D.
Medical data bases
393
Fun House by Richard Ramella
Make your own adventure game
403
Index to Advertisers
404
MONEY DOS by J.M. Keynes
Large profits quickly without disaster.
408
The Gamer’s Cafe by Rodney Gambicus
While the gamers collect some z’s, Stella continues the tale.
410
Feedback Loop by Terry Kepner
Readers’ questions answered.
420
Reload 80
410
Calendar
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:

Click to Enlarge

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

82
The 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.
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 by Steve Odeal
Read how this Color Computer owner used his Radio Shack disk system with the versatile and inexpensive FLEX disk operating system
210
VCMOD by Arne Rohde
Make the modifications suggested here and create a useful editing function for VisiCalc
232
Color 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.
264
OMNIPROM by Bob Hart
A nearly universal EPROM programmer
291
The 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

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

Games

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

General

141
Punklist by Eric Maloney
Rock groups – don’t despair! This program will soon end your search for the perfect name.
332
Memory Exerciser by 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 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

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

Review

120
Interpro 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.
198
Random 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

157
APL 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
168
Inside AIDS-III – Part II by Robert A. Fiorelli
Round off your data-management system with MAPS-III, CALCS-III, and MERGE-III
254
Lisp: 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

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

Departments

8
Remarks by 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 by Scott Norman
Turning your color machine into a home manager.
38
The Next Step by Hardin Brothers
Relocatable machine-language routines.
46
Suite 16 by 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 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.
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 by Richard Ramella
Four April Fools’ jokes for your computer
370
Calendar
372
MONEY DOS by J M Keynes
Choosing a broker.
376
Feedback Loop Special Edition by Terry Kepner
SuperScripsit
388
Feedback Loop by Terry Kepner
Reader’s questions answered.
398
The Gamer’s Cafe by Rodney Gambicus
Catching up on the mail while gassing up at Little America.
402
Copernica Mathematica by Bruce Powel Douglass
A convert of Pascal.
404
Reload 80 by Art Huston
Editor/Assemblers.
410
New 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.


80 Microcomputing – Volume 40 – May, 1983

Issue Information:

Click to Enlarge

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

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

Business

140
MiniCalc by John Corbani
Apply matrix logic to business applications
326
Business Graphics by 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 by Victor T. Albino
Let these creatures teach your child number patterns.

Games

254
Color 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.
298
Jet Bomber by Thomas H. Rogers, Jr.
Add the screen-scrolling feature of this game to your own games or other graphic programs.

General

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

Graphics

198
Rapid Prints by Delmer D. Hinrichs
Forget tedious mathematical calculations. Draw hundreds of figures and shorten printing time with these Fortran and Basic programs.
212
40K 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?
236
3-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.
246
A 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

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

Review

133
The 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.
282
Double-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

306
LISP: 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

125
MX-80 Driver by Dan Robinson
If you’ve been unable to use your printer with SuperScripsit, you should try this program.
144
Statements in Common by Zvi Barak
You can transfer data from one program to another. This routine makes it quick and easy.
154
Pencil-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

8
Remarks by 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 “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.
28
The Next Step by Hardin Brothers
Passing values between machine language and Basic.
38
Commander 80 by Jake Commander
What is this thing called Tandy?
41
The Color Key by 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 by Rodney Gambicus
Rodney and his crew arrive in Iowa City.
360
Reload 80 by Art Huston
An explanation of DOSPLUS
362
Fun House by Richard Ramella
Fun generating mazes
371
Index to Advertisers
372
Take II
QuickCalc for the Model II
380
Feedback Loop by 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:

Click to Enlarge

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

68
Drivers and DCBs by Jery Lindsly
Are you curious about machine-language programming? The ROM subroutines explained and demonstrated here will help you learn.
78
Apple 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.
104
Basic, 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.
116
The 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.
134
Software Buyer’s Guide: Utilities
173
Assembly-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.
200
Build 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.
234
Hardware Buyer’s Guide
Disk Drives and Disks
244
Programming 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

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

Graphics

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

Hardware

270
Model 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

258
Using 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.
300
Ordering Via Recursive Routines by John Stover
Recursive routines can calculate all possible number combinations in a small amount of code.

Review

148
DOSPLUS II by Art Huston
Need a snazzy new DOS for your Model II, 12, or 16? Try this one.
180
The 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

190
Letter-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

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

Utilities

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

Departments

6
Remarks by 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 by Hardin Brothers
Tinkering with the Basic in your ROM.
32
The Color Key by Scott Norman
Color keyboard, Telewriter improvements, 64K CoCo.
38
Suite 16 by 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 by Richard Ramella
Traveling games.
336
Reload 80 by Aimee Eisenberg
New disk transfer system
340
The Gamer’s Cafe by Rodney Gambicus
Askew in Sandusky
344
Feedback Loop by 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 Collection. Cores-9 editor/assembler update. CoCo keyboards. And more.


80 Microcomputing – Volume 42 – July, 1983

Issue Information:

Click to Enlarge

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

78
La 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.
94
A Pascal Primer by J.B. Harrell
Learn Pascal while teaching your micro to play cribbage.
186
Fortran 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.
220
Logo for the CoCo by Molly Watt
Radio Shack’s Color Logo brings computer programming to your kids.
228
A History of Programming Languages by 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

Business

240
Service with a Smile by 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 by Ralph Navarette
A simple serial interface for the MX-80 and the Color Computer, with programs to show it off.
274
Hardware Hacker Help by Philip M Van Praag
Analyze PSI circuitry problems with this test equipment and advice.
286
Making 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.

Review

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

Technique

130
Which 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.
200
Basic, Faster and Readable – Part II by John Corbani
Make conditional tests easier by tailoring the logic to the expected input.

Tutorial

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

Utilities

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

C Notes

158
Tandy’s Towering Totable by John Berman
The definitive review of the definitive portable computer.
166
People Are Talking by 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? by 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 by 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 by Hardin Brothers
Scroll, don’t flip.
32
The Color Key by 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 by Richard Ramella
A festival of mini-programs.
356
The Gamer’s Cafe by Mercedes Silver
Letter to a Radio Shack dealer.
360
Feedback Loop by Terry Kepner
Readers’ questions answered.
370
Reload 80 by 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:

Click to Enlarge

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

86
Armageddon by Tom Alar
Meteors are falling on Madison, WI. Your speed and dexterity can save the city.
92
Lost on the Great Barrier Reef by Thom Johnstone and Mike Matthews
Danger Down Under – an adventure that might leave you stranded
100
Once 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.
110
Rat Maze by Richard Uglum
A game that’ll make you feel like a laboratory animal
120
Muddy Pig Simulator by Mike Conforti
Tired of fancy flight simulators? Struggle with swine in this fast paced corral game.
148
Model II Casino by Byron Lott
Las Vegas Night for the business micro.
182
Micro-Melodies by Jef Bell
A new way to test your memory – match those tunes.

Games

212
Collegiate Capers by Christopher Skapura
The Paper Chase was never like this.
226
Attack 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?
234
Maxwell’s Demon by Lee Morgenstern
Hot and cold molecules don’t mix in this game based on a hypothesis in physics.
246
Kings and Castles by Gary Michaels
“Kings and Catapults” returns for Color Computer warriors.
256
Strip Blackjack by Stephen Mills
Play for high stakes in this adult variation of a computer favorite.
268
Light Cycles by Donald David
Rev up and paint the screen. It’s easy except for the obstacles and your opponent.
272
Maze Chase by 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 by Jim Heid
A mailing-list manager that comes with its own DOS.
188
ARCDOS for ARCNET by Joseph E. Trojak
An overview of Radio Shack’s Model II/12/16 network

Techniques

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

C Notes

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

Departments

6
Remarks by 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 by Hardin Brothers
Keyboard secrets revealed.
40
Suite 16 by Dan Keen and Dave Dischert
A look at TRSDOS – all 11 versions.
44
The Color Key by 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 by Richard Ramelia
Can you guess the Mystery Guest?
310
Feedback Loop by 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 by Rodney Gambicus
Marching through Georgia.
328
Copernica Mathematica by Bruce Powel Douglass
Eigenvalues by the power method.
340
Reload 80 by 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:

Click to Enlarge

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

74
The Business of Planning by 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
Business Bazaar
A buyer’s guide to profitable software.
180
Satellite Word Processing by Henry Aldrich
Use CoCos as terminals while you Model I/III/5 handles the printing chores.
184
Spacemap by Hubert C. Bormann
A track-by-track disk directory for Model I owners.
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 by Douglas Payne
Use this dumb terminal program to say hello to minis and mainframes

Business

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

Graphics

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

Hardware

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

Review

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

Technique

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

Tutorial

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

Utility

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

Departments

6
Remarks by 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 by Hardin Brothers
Low memory and restart vectors.
30
The Color Key by 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 disassembler, elapsed time clock, foreign exchange, and tips on writing your own Model 100 conversions, plus an update for would-be fliers.
292
News 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.
304
The Gamer’s Cafe by Rodney Gambicus
Investing in Florida real estate
308
Feedback Loop by Terry Kepner
Our columnist fields your questions.
320
Reload 80 by Amee Eisenberg
Making business software decisions.
324
Fun House by Richard Tamella
Back to school, Fun House style.
331
Young Programmer’s Contest by
How to enter the second annual extravaganza.
332
Take II by
A Model II mailing list.
338
New 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:

Click to Enlarge

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

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

Game

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

Hardware

126
Using 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.

Review

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

Science

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

Technique

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

Tutorial

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

Utility

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

Departments

6
Side Tracks by Eric Maloney
Copyright, piracy, and the TRS-80 market.
8
Proof Notes
Science for the micro masses.
10
Input
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.
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 by Hardin Brothers
Restoring June’s Model III Restore Patch.
36
The Color Key by Scott Norman
Indulging a passion for mathematics.
44
Suite 16 by 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 by Amee Eisnenberg
UTerm and memory error messages.
304
Copernica Mathematica by Bruce Powel Douglass
Human and machine vision systems.
314
Fun House by Richard Ramella
Learn Spanish, states and provinces, and the times table.
316
Young Programmer’s Contest
This should be even bigger than last yearsx.
324
The Gamer’s Cafe by Rodney Gambicus and Charles C. Edwards
A Florida condo and the Temple of Apshai.
330
Feedback Loop by 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:

Click to Enlarge

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

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

Business

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

Games

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

Review

176
Data-base Duo by 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 by Karl Andressen
Instead of changing letters, our cryptologist turns his hand to rearranging them.

Tutorial

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

Utilities

186
Space Maker by Jim Barbarello
Spread out Model II/12/16 Basic listings for easy reading
202
Color Correction by Danley E Christensen
A test pattern program for accurate color reproduction
204
Make Your Word(s) Count by Charles Knight
How long is that Scripsit file? Now you can know in words instead of characters
238
REM Remover by Charles R Perelman
Take back your remarks to save Model II disk space
248
Extend Radio Shack’s Editor/Assembler by 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 by 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 by Hardin Brothers
Don’t forget variables and arrays.
36
The Color Key by 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 by Rodney Gambicus
Reunion In Baltimore and a Silver sibling.
299
Young Programmer’s Contest
Last call to send in your masterpiece.
300
Fun House by Richard Ramella
Basic animation: growing trees and playing games.
310
Feedback Loop by Terry Kepner
Expert answers to techie questions.
322
Reload 80 by 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:

Click to Enlarge

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

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

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

Review

146
A 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

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

Utility

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

Departments

6
Side Tracks by 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 by Hardin Brothers
Keep an eye on variable values
30
The Color Key
One last look at the world of CoCo software.
36
Suite 16 by 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 by Rodney Gambicus
From Rodney’s “Misc.” disk.
274
Fun House by Richard Ramella
Santa and Leon host the Fun House Christmas pageant.
280
Feedback Loop by Terry Kepner
Reader’s questions answered
292
Reload 80 by 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

Issue Information:

Click to Enlarge

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

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

Know Your System

16
Assembly-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.
28
Word 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.
32
The Data Base Explained by Wynne Keller
Introduction to data bases-everything you need to know explained in plain English.
40
Insure Your Computer by Thomas McDowell
Remember to purchase insurance for your computer. You’ll need it when lightning strikes!
44
Disk 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.
50
Binary Breakout by Richard E Esposito
Now you can understand the language of your Model I, III or Color Computer. It’s simple.
56
Nine Programming Tricks by 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 by Spencer Weersing
Acquiring proficiency at writing a Basic program requires first thinking through the program and then outlining the needed steps.
70
Linear 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.
78
Model III Relative Files by Andrew Rucks
The drawbacks of direct access files can be overcome by using relative files accessed by the scatter technique.
82
Towards 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

96
NODOS80 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.
128
Storm 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.
130
6502 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.
144
Super Spooler by Ron Balewski
Here is a solution to the problem of being unable to use your computer while it is printing.
148
Election by 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 … by Joey Robichaux
A unique application for your microcomputer, this menu-driven Basic package will help amateur astronomers and other stargazers.
164
Datascope 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.
176
Pick a Card … by 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 by Jeffrey Myers
Boolean logic is a powerful programming tool. Here’s how it works and what it’s used for.
186
Permanent Sound by Richard C McGawey
Avoid cluttering your work space with wires and cables and install this internal sound mod.
190
Android 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?
196
Using DEFFN by Ralph Rideout
The DEFFN statement lets you create your own functions. Using it simplifies programming and saves memory.
200
Categories by Glenn Collura
Categories is playable without a Computer, but this program adds new dimensions to the game.
208
Number Your Program Listings by Joe Edwards
It’s much easier to handle those long, long program listings when they are numbered.
213
Brainstorm by Richard Ramella
This game challenges you with number sequences, just like the IQ tests YOU took in school.
216
More 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.
220
Fast Tape Operating System by Michael Pollard
FTOS lets you use disk commands to increase the speed of storage time in your cassette system.
228
The 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.
238
Avoid the Danger of Dirty Disks by David Grimes
Keeping a disk system clean has never been easy.
240
Making 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.
244
Two-Person Space Bomber by Dale Chermak
In Space Bomber, one player defends his planet from bombs being dropped by his opponent.
253
Dual-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.
264
Flexcat, 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.
274
Math Hangman by Tim Knight
Math Hangman is a game that entertains you as it helps you develop your mathematical skills.
278
Smartcat by Irwin Rappaport
The Lynx modem and Emterm software make an impressive cormmunications package. Smartcat makes this combination even more powerful.
284
Long, Long Division by David Cecil
Teach your kids (or yourself) long division. Your Model I makes a good patient tutor.
288
Almazar I by Winston Llamas
Visit the 72 rooms of Almazar Part I, collect the treasure, and reach the next dimension.
298
Rapid Random Access by Karl Townsend
Find specific records quickly, even if your files contain 5,000 or even 10.000 records.
300
Aulo Dial/Auto Answer by Alan Moyer
This addition to your modem will make your computer answer and dial your phone automatically.
306
Fly Like an Eagle by Ian Corm
This simulation of a sailplane race can show you the excitement of being at the controls.
316
Catalog Your Files by 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 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.
326
Tiger Graphics by 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 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.
392
Disk 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.
398
Reload 80 by 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 by Allen Curtis
Add commands, statements, and functions to Color Basic and gain more computing power.
416
Games in Color by Robert Toscali
These games for the Color Computer will test you, amuse you, and frustate your friends!
427
3-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!
436
Something-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.
440
Solitary Maneuvers by James Wood
In this follow-up to Colorful Maneuvers, the computer is the opponent.
442
Colorful 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.
469
High-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.
472
Teach 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.
478
Five Games for 4K by James Wood
Don’t despair if your Color Computer has only 4K of memory; you can still play graphics games.
482
Reconcile with Color by David Dacus
Organize your checkbook and reconcile bank statements with this Color Computer program.
486
Expanded Color Capabilities by 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 by Karl Andreassen
If you would like to keep private correspondence private, this program is for you.
536
BRKSEL 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.
538
Model II Business Bar Graphs by Richard Harkness
Your Model II can produce bar graphs like those the Models I and III generate.
546
Mod II Disk Index by Charles R Perelman
Indexing your Model II disks will eliminate confusion the next time you look for a program.
554
Compress, Mod II Style by Charles R Wood
Are your Model II programs too long? This program takes out spaces and remarks.
558
Take a Letter by James Barbarello
Draw large block letters using regular size letters, any printer, and a Model II.
564
Investment Advisor by Charles R Perelman
Determine the profit margin of an investment by computing its internal rate of return.

Peripherals

572
How 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.
578
Suppress Those Demon Transients by G Michael Vose
Transients. surges, power outages. and the like can destroy data and damage your hardware.
582
Into 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.
586
Ribbon Rewind by Dan Keen and Dave Discherl
Save money by rewinding muitistrike carbon ribbons for your daisywheel printer.
588
Homebrew 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.
590
Coping with Cassettes by Richard Whitney
You will peacefully co-exist with your casselle recorder if you follow these tips and perform these maintenance procedures.
592
Ultimate Joystick Interface by 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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