Note:

Please note that these are covers only. The ever extending copyright code has ensured that the TRS-80 and many other items will, regrettably, be lost to the ages. These magazines are NOT downloadable at this site.


H & E Computronics Monthly Newsletter – Issue 1-3

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issues 1-3

Date: July-September 1978

Publisher: H & E Computronics, Inc.

Pages: 64

TOSEC: TRS-80 Monthly Newsletter Issue 1-3 (1978)(H & E Computronics)

Status: Complete

Table of Contents

Features

02
Bits and Pieces
by Howard Y Gosman
07
Federal Tax Withholding Program
by Dr Peter Shenkin
13
A Horse Selection System (Flats or Trots)
by Dr Hal Davis
14
Future Value of an Investment
by Howard Y Gosman
15
Future Price and Salary Calculations
by Howard Y Gosman
16
Advertisements
17
Bits and Pieces
by Howard Y Gosman
29
Beginner’s Corner
by Elaine Traum
30
Business Personal Finance Money Management
by Howard Y Gosman
32
Alphabetizing without Replacement
by Howard Y Gosman
34
Complete Mailing List Program
by Howard Y Gosman
40
Predicting Stock Market Trends
by Dr Peter Shenkin
43
Software
47
Readers Survey
49
Bits and Pieces
by Howard Y Gosman
55
Beginner’s Corner
by Elaine Traum
57
Federal Withholding Tax Program
by Dr Peter Shenkin
59
Random Sampling
by Dr Peter Shenkin

H & E Computronics Monthly Newsletter – Issue 4-6

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issues 4-6

Date: October – December 1978

Publisher: H & E Computronics, Inc.

Pages: 64

TOSEC: TRS-80 Monthly Newsletter Issue 4-6 (1978)(H & E Computronics)

Status: Complete

Table of Contents

Features

61
Random Selection Program
by Dr Peter Shenkin
62
Checkbook Maintenance Program
by Dr Peter Shenkin
69
Bits and Pieces
by Howard Y Gosman
73
Index for TRS-80 Level II Manual
by Stan Tishler
75
Inventory Control for TRS-80
by Dr Peter Shenkin
88
Credit Card Information Storage
by Stan Tishler
92
Bar Graph Program
by Richard Clinton
93
Bits and Pieces
by Howard Y Gosman
97
The Electric Pencil
99
Buying a Printer
101
TRS232 Printer Interface
102
Lower Case Modification
105
Additional TRS-80 Line Printer Instructions
106
16-Digit Accuracy for Square Roots
106
Word Processing Program
107
EOQ Inventory Model
by Dr Peter Shenkin
109
Random Access Mailing List Program
by Howard Gosman and Peter Shenkin
115
Spinterm
119
Prime Factorization of an Integer
by Dr Peter Shenkin

H & E Computronics Monthly Newsletter – Issue 7

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 7

Date: January 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 7 (1979)(H & E Computronics)

Table of Contents

Features

121
Bits and Pieces
by Howard Y Gosman
127
Dressing Up and Speeding Up
by Gary Willis and Merle M Harris
128
Catalog
by Jeff Stanton
129
Adding Time
by Primero Consultants Inc.
130
Line Renumber Program
by Gerald Sabin
131
Ram Test
131
Normal Curve Demonstration
by Gary Wood
132
Graphics of the TRS-80
by Albert S Adams
133
Federal Income Tax (1978)
by Dr Peter Shenkin
135
Expansion Interface Test Sequence
136
Income Tax Form 1040 and Shedule B
by Dr Peter Shenkin
139
Income Tax Computations – 1040
by Dr Peter Shenkin
143
Income Tax – Schedule A
by Dr Peter Shenkin

H & E Computronics Monthly Newsletter – Issue 8

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 8

Date: February 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 8 (1979)(H & E Computronics)

Table of Contents

Features

153
Bits and Pieces
by Howard Y Gosman
155
TextEdit
by Dr Peter Shenkin
159
Automatic Boot Fix for Disk Errors on TRSDOS 2.1
by Radio Shack
160
Getting it Together in Assembly
by Dr Hubert S Howe Jr
164
Expansion Interface Test Sequence
by Radio Shack
165
Disk Errors in the TRS-80
by Radio Shack
166
Accounts Payable Program
by Dr Peter Shenkin

H & E Computronics Monthly Newsletter – Issue 9

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 9

Date: March 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 9 (1979)(H & E Computronics)

Table of Contents

Features

185
Bits and Pieces
by Howard Y Gosman
194
Getting it Together in Assembly – Part II
by Dr Hubert S Howe Jr
201
Home Budget Analysis
by Dr Peter Shenkin
212
Small Business Invoicing
by Robert Beck

H & E Computronics Monthly Newsletter – Issue 10

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 10

Date: April 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 10 (1979)(H & E Computronics)

Table of Contents

Features

217
Bits and Pieces
by Howard Y Gosman
224
Beginners Corner
by Elaine Traum
228
Text: A Basic Text Editor
by Dr Hubert S Howe Jr

H & E Computronics Monthly Newsletter – Issue 11

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 11

Date: May 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 11 (1979)(H & E Computronics)

Table of Contents

Features

249
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
253
Getting It Together In Assembly
by Dr Hubert S Howe Jr
Column # 3: Conditional Codes and Jump Instructions
258
Sorting
by Dr Peter Shenkin
266
Simple Program for GSF Users
by Howard Y Gosman
267
Linear Regression
by Dr Peter Shenkin
271
New Drives Announced by Percom
TFD-100, and TFD-200
277
New Product Announcement
Blippo – Sound Synthesizer

H & E Computronics Monthly Newsletter – Issue 12

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 12

Date: June 1979

Publisher: H & E Computronics, Inc.

Pages: 52

TOSEC: TRS-80 Monthly Newsletter Issue 12 (1979)(H & E Computronics)

Table of Contents

Features

281
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
284
An Interview with Radio Shack’s President
The Company’s growing microcomputer business
297
Getting it Together in Assembly
by Dr Hubert S Howe Jr
Column 4: The Stack
303
Double Precision Subroutines
by Peter Shenkin PhD

H & E Computronics Monthly Newsletter – Issue 13

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 13

Date: July 1979

Publisher: H & E Computronics, Inc.

Pages: 40

TOSEC: TRS-80 Monthly Newsletter Issue 13 (1979)(H & E Computronics)

Table of Contents

Features

321
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
327
Memory Test Program
by Dr Hubert S Howe Jr
341
Getting it Together in Assembly
by Dr Hubert S Howe Jr
350
Labels
by Harry A Hopkins

H & E Computronics Monthly Newsletter – Issue 16

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 16

Date: November 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 16 (1979)(H & E Computronics)

Table of Contents

Features

422
Getting it Together in Assembly
by Dr Hubert S Howe Jr
426
Stock Portfolion Program
by James H Sheats
427
Checkers
by Martin Freund
430
Linear Regression with Graphics
by Robert L Bergen Jr
433
A BASIC Program to Disassemble Z-80 Code from Main Memory
by Dick Chagnot

H & E Computronics Monthly Newsletter – Issue 17

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 17

Date: December 1979

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 17 (1979)(H & E Computronics)

Table of Contents

General

443
Bits and Pieces
by Howard Y Gosman
447
Crystal Ball Department

New Products From Radio Shack
452
New Products
460
Classified Ads

Features

449
Getting it Together in Assembly
by Dr Hubert S Howe Jr
Part 9 – Moving Data
454
Simple Statistics
by Dr Peter Shenkin
461
The Amazing Blackjack Machine
by Richard A Ramm
469
Level III BASIC
by Robert Marsh
A Review

H & E Computronics Monthly Newsletter – Issue 19

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 19

Date: February 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 19 (1980)(H & E Computronics)

Table of Contents

Features

507
Bits and Pieces
by Howard Y Gosman
513
Crystal Ball Department
516
Getting It Together In Assembly
by Dr Hubert S Howe Jr
Column # 11: Arithmetic Operations
522
Practical Business Programs for TRS-80 Users Invoici9ng
by S M Zimmerman and Leo M Conrad
529
Practical Programs
by Gordon Speer
Car Expenses, Sketch, Triples, English-Metric Conversions, Squares, Cliff

H & E Computronics Monthly Newsletter – Issue 20

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 20

Date: March 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 20 (1980)(H & E Computronics)

Table of Contents

Features

539
Bits and Pieces
by Howard Y Gosman
541
Crystal Ball Department
542
New products
545
Getting It Together In Assembly
by Dr Hubert S Howe Jr
Column # 12: More about Arithmetic Operations
548
Buying Software: Some Random Thoughts
by Robert Sprung
550
The Practical Business User: Breakeven Chart
by Steven M Zimmerman and Leo M Conrad
554
Review: Salvo Battleship
by Ken Brown
555
Fast Action Challenge: Cleanup
by Doug Schiller
560
Programs by Gordon Speer
by Gordon Speer
Histogram, Logo, Triangle, Gold Scale, Timer, Hot Tub

H & E Computronics Monthly Newsletter – Issue 21

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 21

Date: April 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 21 (1980)(H & E Computronics)

Table of Contents

Features

571
Bits and Pieces
by Howard Y Gosman
580
Zipper
by Gordon Speer
582
Census
by Gordon Speer
582
Carpet
by Gordon Speer
582
Radiator
by Gordon Speer
583
Tosser and Dice
by Gordon Speer
584
Random
by Gordon Speer
585
Text: A (New) BASIC Text Editor
by Hubert S Howe Jr

H & E Computronics Monthly Newsletter – Issue 22

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 22

Date: May 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 22 (1980)(H & E Computronics)

Table of Contents

Features

603
Bits and Pieces
by Howard Y Gosman
608
Getting it Together in Assembly
by Hubert S Howe Jr
Column # 13: Understanding the TRS-80’s Keyboard
615
Software Review: CP/M
by Hubert S Howe Jr
621
A BASIC Program for Creating Disk Program Indexes
by Harry A Hopkins
623
ROMPeek
by Gordon Speer
623
Windchill
by Gordon Speer
623
Power
by Gordon Speer
623
Messages
by Gordon Speer
623
Waterflo
by Gordon Speer

H & E Computronics Monthly Newsletter – Issue 23

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 23

Date: June 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 23 (1980)(H & E Computronics)

Table of Contents

Features

635
Bits and Pieces
by Howard Y Gosman
644
Crystal Ball Department
by Radio Shack
646
Getting it Together in Assembly
by Hubert S Howe Jr
Column 14: Logical and Bit Operations
652
Focus on Form
by David Aimes
658
Inflation
by Gordon Speer
658
Circle
by Gordon Speer
658
Electron
by Gordon Speer
658
Tree
by Gordon Speer
658
Discount
by Gordon Speer

H & E Computronics Monthly Newsletter – Issue 24

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 24

Date: July 1980

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 24 (1980)(H & E Computronics)

Table of Contents

Features

667
Bits and Pieces
by Howard Y Gosman
671
Crystal Ball Department
by Radio Shack
677
Getting it Together in Assembly
by Hubert S Howe Jr
Column 15: USR Subroutines in BASIC Programs (Part I)
682
Coder
by Gordon Speer
682
Decoder
by Gordon Speer
682
Mileage
by Gordon Speer
685
Break Even
by Thomas C Bogden and Tim Rowe
688
SS-51 Scientific Calculation Simulation
by Ken Brown
Part I

H & E Computronics Monthly Newsletter – Issue 25

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 25

Date: August 1980

Publisher: H & E Computronics, Inc.

Pages: 44

TOSEC: TRS-80 Monthly Newsletter Issue 25 (1980)(H & E Computronics)

Table of Contents

Features

667
Table of Contents
668
Bits and Pieces
by Howard Y Gosman
670
Letters to the Editor
673
Crystal Ball Department
675
Starquiz
by Gordon Speer
676
Millirem
by Gordon Speer
677
Output
by Gordon Speer
678
Slopes and Roofing
by Gordon Speer
680
DOS Commands in Level II
by Mel Patrick
684
Getting it Together in Assembly
by Hubert S Howe Jr
Column 16: USR Subroutines in BASIC Programs (Part II)
687
The Megabyte Gap
by A Douglas Werbeck
690
Two BASIC Programs
by Larry Delahooke
Probability Curve Generator, Numerical Factoring
693
SS-51 Scientific Calculation Simulation
by Ken Brown
Part II
700
Disk for Beginners
by Dr Peter Shenkin
For Model I and Model II Owners

H & E Computronics Monthly Newsletter – Issue 26

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 26

Date: September 1980

Publisher: H & E Computronics, Inc.

Pages: 52

TOSEC: TRS-80 Monthly Newsletter Issue 26 (1980)(H & E Computronics)

Table of Contents

Features

753
An Open Letter to 80 Microcomputing
by hubert S Howe Jr
Did they use or Word Processor? Who Cares?
755
Problems with the Word Processor
by Hubert S Howe Jr
Problems reported by readers, and corrections.
764
IRV
by Ronald H Lobo
Input Shorthand, Relocate Lines, Video Editor

Programs

765
Programs
by Gordon Speer
Lineloss, Calendar, Factorials, Chopper, Spiral
771
Passing Twin Spirals
by Gary A Van Exel
778
Calculator Program, Part III
by Ken Brown

Regular Departments

740
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
746
Letters to the Editor
Readers tell us what’s on their minds.
750
The Crystal Ball
by Anonymous
New products from Radio Shack
772
Getting It Together In Assembly
by Dr Hubert S Howe Jr
Column # 17: Disk Input and Output, Part I

H & E Computronics Monthly Newsletter – Issue 27

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 27

Date: October 1980

Publisher: H & E Computronics, Inc.

Pages: 58

TOSEC: TRS-80 Monthly Newsletter Issue 27 (1980)(H & E Computronics)

Table of Contents

Reviews

798
NEWDOS/80: The DOS of the 80’s
by Terry Kepner
Apparat’s new disk operating system
801
Stocks and Bonds, PI, Tenspeed, Airplane
by Gordon Speer
808
Winners of the Decoder Contest in the July issue
815
Pattern
by Robert F Nicholas
817
Prime Factors
by Dr James W Bailey III
832
SS-51 Scientific Calculator Part IV
by Ken Brown

Regular Departments

788
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
790
Letters to the Editor
Readers tell us what’s on their minds
795
The Crystal Ball
by Anonymous
New products from Radio Shack and others
809
Getting it Together in Assembly
by Hubert S Howe Jr
Column #18: Disk Input and Output, Part II
819
Helpful Hints
Programming quickies
824
Beginner’s Corner
by A Douglas Werbeck
Inside the Keyboard and Memory
827
Questions and Answers
by Hubert S Howe Jr
Answers to questions posed by readers
829
Cumulative Index to Issues # 1 – # 12
Table of Contents for Back Issues

H & E Computronics Monthly Newsletter – Issue 28

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 28

Date: November 1980

Publisher: H & E Computronics, Inc.

Pages: 56

TOSEC: TRS-80 Monthly Newsletter Issue 28 (1980)(H & E Computronics)

Table of Contents

Reviews

851
Program Previews
by A A Wicks
Microcomputer Flight Simulator by Dynacomp

Programs

854
Simulated Golf Game
by Andrew S Braunstein
866
Test, Air, Planets, Crazy Eights
by Gordon Speer

Regular Departments

844
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
846
Letters to the Editor
Readers tell us what’s on their minds
849
The Crystal Ball
by Anonymous
New products from Radio Shack and others
875
Getting it Together in Assembly
by Hubert S Howe, Jr
Column #19: Disk Files, Part I
878
Helpful Hints
Programming quickies
881
Beginner’s Corner
by A Douglas Werbeck
Exploring the RAM
885
Questions and Answers
by Hubert S Howe, Jr
Answers to questions posed by readers
887
Cumulative Index to Issues #13 – #24

H & E Computronics Monthly Newsletter – Issue 29

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 29

Date: December 1980

Publisher: H & E Computronics, Inc.

Pages: 60

TOSEC: TRS-80 Monthly Newsletter Issue 29 (1980)(H & E Computronics)

Table of Contents

Programs, Reviews, and a Puzzle

906
Program Previews
by A A Wicks
Information System by TBS, Inc
911
Concentration
by Sara J Witherow
915
Estimate, Sineplot, Toy Train, Pascal’s Triangle
by Gordon Speer
921
Hangman
by Thom Verhave
925
Bugs
by Terry W Powers
926
Combinations
by Dr James W Bailey III
928
Coming to terms with the COMPUTRONICS SEARCHWORD
by John K Young
A Puzzle for TRS-80 Users

Regular Departments

896
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
898
Letters to the Editor
Readers tell us what’s on their minds
903
The Crystal Ball
by Anonymous
New products from Radio Shack and others
929
Getting it Together in Assembly
by Hubert S Howe Jr
Column # 20: Disk Files, Part II
938
Beginner’s Corner
by A Douglas Werbeck
Keyboard Thunder and Lightning Explained
942
Helpful Hints
Programming Quickies
944
Questions and Answers
by Hubert S Howe Jr
Answers to questions posed by readers

H & E Computronics Monthly Newsletter – Issue 30

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 30

Date: January 1981

Publisher: H & E Computronics, Inc.

Pages: 68

TOSEC: TRS-80 Monthly Newsletter Issue 30 (1981)(H & E Computronics)

Table of Contents

Features

6
Program Previews
by A A Wicks
BASIC Computer Programs for the Home by Charles D Sternberg
8
FINCALC/P5
by Frank S Kasper
Financial Calculator Program
45
Disassembled Handbook for TRS-80 – Supplement
by Robert Richardson
A Brief Look at the Model III TRS-80

Regular Departments

2
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
4
Letters to the Editor
Readers tell us what’s on their minds
55
Beginner’s Corner
by Douglas Werbeck
Stepping Inside and Outside with your TRS-80
58
Helpful Hints
Programming Quickies
59
Questions and Answers
by Hubert S Howe, Jr
Answers to questions posed by readers

H & E Computronics Monthly Newsletter – Issue 31

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 31

Date: February 1981

Publisher: H & E Computronics, Inc.

Pages: 66

TOSEC: TRS-80 Monthly Newsletter Issue 31 (1981)(H & E Computronics)

Table of Contents

Features

15
The Magic Software Machine
by R. W. Liddil
First of a new series
19
Register, Determinants, Payoff, Bankturn
by Gordon Speer
Four Basic Programs
23
The COMPUTRONICS Searchword
by John K. Young
A new puzzle, and solution to December’s puzzle
25
Keyboard Input Buffering for Basic Programs
by Arne Rohde
Speed up typing in Basic programs
31
Over and Under
by C. Brian Honess
A graphic gambling game
35
ZAP: A Program to Zero User Memory
by Joseph Rosenntan
An assembly language program to initialize memory
38
Concentration
by Mike Zinner
A two-person interactive version of this popular game
40
Roots
by Edgar W. Van Winkle
Solve mathematical equations
42
Program Previews
by A. A. Wicks
WIN21 by Philip C. Pilgrim

Regular Departments

2
Bits and Pieces
by Howard Y. Gosman
Publisher’s Remarks
4
Letters to the Editor
by
Readers tell us what’s on their minds
13
The Crystal Ball
by Anonymous
New products from Radio Shack and others
45
Beginner’s Corner
by A. Douglas Werbeck
Introducing your TRS-80 to the Outside World
49
Helpful Hints
by
Programming Quickies
53
Questions and Answers
by Hubert S. Howe, Jr.
Answers to questions posed by readers

H & E Computronics Monthly Newsletter – Issue 33

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 33

Date: April 1981

Publisher: H & E Computronics, Inc.

Pages: 60

TOSEC: TRS-80 Monthly Newsletter Issue 33 (1981)(H & E Computronics)

Table of Contents

Features

10
A Simple Operations Research Tash for the TRS-80
by Steven M Zimmerman and Wayne Bonner
The Traveling Salesman Problem
18
Hardware Reviews
by Joseph Rosenman
The Epson MX-80 Printer
22
Program Previews
by A A Wicks
Business Pac 100 and Master Pac 100
28
The Magic Software Machine
by R W Liddil
More adventures of Professor Megabyte
30
Disassembled Handbook for the TRS-80, Vol. 4
by Robert M Richardson
Chapter 1: Morse Code Transmit Program

Regular Departments

2
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
3
The Crystal Ball
by Anonymous
New products from Radio Shack and Others
4
Letters to the Editor
Readers tell us what’s on their minds
46
Beginner’s Corner
by A Douglas Werbeck
Elementary Arrays
50
Questions and Answers
by Hubert S Howe Jr
Answers to questions posed by readers
53
Helpful Hints
Programming Quickies

H & E Computronics Monthly Newsletter – Issue 34

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 34

Date: May 1981

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 34 (1981)(H & E Computronics)

Table of Contents

Features

5
Minimizing BASIC String Reorganization
by Arne Rohde
Avoid one of the most annoying aspects of Microsoft BASIC
7
Program Previews
by A A Wicks
Leedex Video 100 Monitor and Findisk II
9
Four BASIC Programs
by Gordon Speer
Angles, Stairway, Graph, 3D Graph
12
Beginner’s Corner
by A Douglas Werbeck
Model III Telecommunication Updates and Arrays (Part II)
15
Disassembled Handbook for TRS-80, Vol 4
by Robert M Richardson
Chapter 2: Adding Type Ahead and Input Prepared Message to the W4UCH Morse Assembly Language Program
26
Biorhythms
by Frank L Growney
Print Biorhythm Charts

Regular Departments

1
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
2
The Crystal Ball
New products from Radio Shack and others
3
Letters to the Editor
Readers give us a piece of their minds
24
Model III Corner
Questions and answers about the Model III
27
Helpful Hints
Programming quickies
29
Questions and Answers
by Hubert S Howe, Jr
Answers to questions posed by readers

H & E Computronics Monthly Newsletter – Issue 35

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 35

Date: June 1981

Publisher: H & E Computronics, Inc.

Pages: 36

TOSEC: TRS-80 Monthly Newsletter Issue 35 (1981)(H & E Computronics)

Table of Contents

Features

6
Program Previews
by A A Wicks
Maxi Manager from Adventure International
9
Electric Video Worksheet
by Mark A Taylor
Draw and Save Graphics on Video Display
12
Assembly Language
by Hubert S Howe, Jr
Let’s Write a Word Processor
14
Disassembled Handbook for TRS-80, Vol 4
by Robert M Richardson
Chapter 3: W4UCH Morse Code Receive Program in Assembler
21
Beginner’s Corner
by A Douglas Werbeck
Elementary Arrays (Part III)
26
Three Basic Programs
by Gordon Speer
Tachistoscope, Fridge, and U S Map

Regular Departments

1
Bits and Pieces
by Howard Y Gosman
Publisher’s Remarks
2
The Crystal Ball
New Products from Radio Shack and Others
4
Letters to the Editor
Readers give us a piece of their minds
8
Color Computer Corner
Information about the TRS-80 Color Computer
24
Questions and Answers
by Hubert S Howe Jr
Answers to questions posed by readers
28
Helpful Hints
Programming quickies

H & E Computronics – Issue 37

Issue Information:

Name: H & E Computronics

Issue: Issue 37

Date: August 1981

Publisher: H & E Computronics, Inc.

Pages: 54

TOSEC: H&E Computronics Issue 37 (1981)(H&E Computronics)

Status: Complete

Table of Contents

Features

12
Program Previews
A. A. Wicks
NEWBASIC from Modular Software Associates
16
Converting the Radio Shack into an Epson Cable
Joseph Rosenman
How to convert slight incompatibilities
17
Alien Invasion Force
Andrew S. Braun stein
A BASIC version of this popular arcade game
19
Graphics Text Printing Program
Joseph Rosenman
Print quality text with a graphics border
22
Test Questions
Gordon Speer
Labels, Pizza, Diving, Payroll, Citysort
26
Beginner’s Corner
A. Douglas Werbeck
Elementary Arrays (Part V)
28
Calendar
George Kwascha
Print yourself a calendar for ANY year
29
Disassembled Handbook for TRS-80, Vol. 4
Robert M. Richardson
Chapter 5: Baudot Radio Teletype Transmit Program

Regular Departments

1
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
2
The Crystal Ball

New Products from Radio Shack and Others
4
Color Computer Corner

Information about the TRS-80 Color Computer
7
Letters to the Editor

Readers tell us what’s on their minds
14
Model III Corner

About the TRS-80 Model III Only
40
Helpful Hints

Programming hints from readers
42
Questions and Answers
Hubert S. Howe, Jr.
Answers to questions posed by readers

H & E Computronics – Issue 38

Issue Information:

Name: H & E Computronics

Issue: Issue 38

Date: September 1981

Publisher: H & E Computronics, Inc.

Pages: 68

TOSEC: H&E Computronics Issue 38 (1981)(H&E Computronics)

Status: Complete

Table of Contents

Features

16
Program Previews
A. A. Wicks
MICROPROOF from Cornucopia Software
20
Static Electricity and the Microcomputer
Dany J. Washington
What to do about this annoying problem
24
EPSON MX-70: A User’s Evaluation
Brett A. McAlister
A low cost, high quality printer
28
Four BASIC Programs
Gordon Speer
Determinant of Any Matrix, Abundant Numbers Perfect Numbers, Road Rally
34
NEWDOS/80’s SYSTEM and PDRIVE Commands
Joseph Rosenman
How to get the most from these powerful features
40
Disassembled Handbook for TRS-80, Vol.4
Robert M. Richardson
Chapter 6: W4UCH Baudot Radio Teletype Receive Program
48
Beginner’s Corner
Sherry M. Taylor
Elementary Arrays (Part VI)
56
The Guarded Bomb
Chris Jaggi
A game of skill and strategy

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
3
The Crystal Ball

New Products from Radio Shack and others
8
Letters to the Editor

Readers tell us what’s on their minds
22
Color Computer Corner
Joseph Rosenman
Information about the TRS-80 Color Computer
26
Model III Corner
Hubert S. Howe, Jr.
About the TRS-80 Model III Only
52
Questions and Answers
Hubert S. Howe, Jr.
Answers to questions posed by readers
58
Corrections

Our face is red department
64
Advertising Directory

H & E Computronics Monthly Newsletter – Issue 39

Issue Information:

Name: TRS-80 Monthly Newsletter

Issue: Issue 39

Date: October 1981

Publisher: H & E Computronics, Inc.

Pages: 68

TOSEC: TRS-80 Monthly Newsletter Issue 39 (1981)(H & E Computronics)

Table of Contents

Features

14
Program Previews
by A A Wicks
MAILING LIST from Howe Software and NEWSCRIPT-UPDATE
22
Converting from Model I to Model II
by Gordon Speer
What you will encounter if you try
26
Book Review
by Dr Peter Shenkin
Data File Programming in BASIC by Leroy Finkel and Jerald Brown
29
Beginner’s Corner
by Sherry M Taylor
Peripherals and Paraphernalia for the TRS-80, Part I
40
Disassembled Handbook for TRS-80, Vol 4
by Robert M Richardson
Chapter 7: W4UCH Baudot Radio Teletype Transmit and Receive System: Putting it All Together
48
Rubik’s Cube
by Gordon Speer
Help in Solving this Popular Puzzle
50
Household Security
by Andrew S Braunstein
A Computerized Inventory of Household Goods
52
Symbol Table
by Kenneth R Meyer
A Cross-Reference Index for BASIC Programs

Regular Departments

02
Hits and Pieces
by Howard Y Gosrnan
Publisher’s Remarks
05
The Crystal Ball
New Products from Radio Shack and others
08
Letters to the Editor
Readers tell us what’s on their minds
36
Color Computer Corner
by Joseph Rosenman
Information about the TRS-80 Color Computer
46
Model III Corner
by Hubert S Howe Jr
About the TRS-80 Model III Only
55
Questions and Answers
by Hubert S Howe Jr
Answers to questions posed by readers
57
Helpful Hints
Programming Quickies
64
Advertising Directory

H & E Computronics – Issue 40

Issue Information:

Name: H & E Computronics

Issue: Issue 40

Date: November/December 1981

Publisher: H & E Computronics, Inc.

Pages: 54

TOSEC: H&E Computronics Issue 40 (1981)(H&E Computronics)

Status: Complete

Table of Contents

Features

14
Program Previews
A. A. Wicks
Typing Tutor and Morse Code Trainer
22
GRAFF-PAC
Neil Fishman and Jeff Platzman
A program for string packing
26
Beginner’s Corner
Sherry M. Taylor
Peripherals and Paraphernalia for the TRS-80, Part II
28
Savings Account
Jay R. Newirth
Maintain a permanent record of your savings
37
Practical Business Programs
S. M. Zimmerman and L M. Conrad
Depreciation Expense
42
Three BASIC Programs
Gordon Speer
Curves, Canada Mileage, and Chemquiz
44
Screen Writer
Joseph Rosenman
Video Masthead Generation Program
47
Salary Rate Charts
Frank P. Vlamings
Chart your salary or income
48
Disassembled Handbook for TRS-80, Vol.4
Robert M. Richardson
Chapter 8: ASCII Radio Teletype Transmit Program

Regular Departments

2
Bits and Pieces
Howard Y. Gosman Publisher’s Remarks
4
The Crystal Ball
New Products from Radio Shack and others
8
Letters to the Editor
Readers tell us what’s on their minds
55
Model Ill Corner
Hubert S. Howe, Jr. About the TRS-80 Model IIIonly
56
Questions and Answers
Hubert S. Howe, Jr. Answers to questions from readers
58
Color Computer Corner
Joseph Rosenman Information about the TRS-80 Color Computer
68
Advertising Directory

H & E Computronics – Issue 41

Issue Information:

Name: H & E Computronics

Issue: Issue 41

Date: January 1982

Publisher: H & E Computronics, Inc.

Pages: 54

TOSEC: H&E Computronics Issue 41 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

14
Program Previews
A. A. Wicks
Disk Drive Analysis Programs
20
Practical Business Programs
S. M . Zimmerman and L. M. Conrad
Amortization of Loans
32
Determinant Challenge Accepted
C. Brian Honess
Simultaneous equations in 50 unknowns
42
Pack Up Your Troubles
Hugh David
An original way to represent codes
46
Disassembled Handbook for TRS-80, Vol. 4
Robert M. Richardson
Chapter 9: 110 Baud ASCII Radio Teletype Receive Program
52
Hardware Reviews
Joseph Rosenman
Gold Plug 80
56
Software Reviews
Elliott Forman
The System Diagnostic Program
60
Three BASIC Programs
Gordon Speer
Spellout, Currency Conversions, Density

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
5
The Crystal Ball

New Products from Radio Shack and others
8
Letters to the Editor

Readers tell us what’s on their minds
26
Model Ill Corner
Hubert S. Howe, Jr.
About the TRS-80 Model III only
38
Beginner’s Corner
Sherry M. Taylor
From Whence Cometh Thy Computer?
54
Color Computer Corner
Joseph Rosenman
Information about the TRS-80 Color Computer
62
Questions and Answers
Hubert S. Howe, Jr.
Answers to questions posed by readers
68
Advertising Directory

H & E Computronics – Issue 42

Issue Information:

Name: H & E Computronics

Issue: Issue 42

Date: February 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 42 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

14
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
The Graphic Pie
18
Mortgage Comparisons
Dan L. Ward
What’s the cheapest way to finance a home?
20
Statement of Income
Richard Eidmann
Print a professional-looking statement of your income
24
Windcrab, Horsepower, and Permute
Gordon Speer
Three Basic programs
28
Chainer
Jay R. Newirth
Create NEWDOS/80 chain files
39
Program Previews
A. A. Wicks
Book review and a program update
42
Program Conversion (Part I)
Richard Kaplan
Converting programs between the Models 1, 2, and 3
43
Disassembled HandbookforTRS-80, Vol. 4
Robert M. Richardson
Chapter 10: 110 Baud ASCII Radio Teletype Transmit and Receive Program
56
Correction
Joseph Rosenman
Screen Writer Program from November-Decerrtber 1981 issue
64
A Correspondence Timesaver
Nadine Willems
Print frequently-used mailing labels

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

New Products from Radio Shack and others
10
Letters to the Editor

Readers tell us what’s on their minds
36
Color Computer Corner
Joseph Rosenman
This month: Screen displays
52
Questions and Answers
Hubert S. Howe, Jr
Answers to questions from readers
60
Helpful Hints

Programming suggestions from readers
68
Advertising Directory

H & E Computronics – Issue 43

Issue Information:

Name: H & E Computronics

Issue: Issue 43

Date: March 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 43 (1982)(H&E Computronics)

Table of Contents

Features

14
Program Previews
A. A. Wicks
This Month: FINPLAN and NEBS Forms Guide
20
Beginner’s Corner
Sherry M. Taylor
Peripherals and Paraphernalia for the TRS-80 (Part III)
22
Interest Formulas
Ricardo Gonzales, Jr
Analysis of compound interest payments
29
Assembly Language for Rank Beginners (Part I)
Joseph Rosenman
First of a new series
32
Clintest
Bruce Wallace
A program to help diabetics monitor their sugar levels
48
Program Conversion (Part II)
Richard Kaplan
Transferring programs from one model TRS-80 to another
52
Practical Business Programs
S. S. Zimmerman and L M. Conrad
Depreciation under the Economic Recovery Tax Act of 1981
60
Electric, Sieve, and Horizon
Gordon Speer
Three BASIC Programs

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publishers Remarks
4
The Crystal Ball

New Products from Radio Shack and others
9
Letters to the Editor

Readers tell us what’s on their minds
32
Model III Corner
Hubert S. Howe, Jr
Understanding TRSDOS (Part I)
56
Color Computer Corner
Joseph Rosenman
The case of the missing integer
68
Advertising Directory

H & E Computronics – Issue 44

Issue Information:

Name: H & E Computronics

Issue: Issue 44

Date: April 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 44 (1982)(H&E Computronics)

Table of Contents

Features

16
Program Previews
A. A. Wicks
This month: Refware Thesaurus
18
Correction

to Chainer program, published February 1982
20
Beginner’s Corner
Sherry M. Taylor
Peripherals and Paraphernalia for the TRS-80 (Part IV)
22
Assembly Language for Rank Beginners (Part II)
Joseph Rosenman
Decimal-Hexadecimal Conversions and Logical Operations
36
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Check Writing on the TRS-80 Model I
44
Program Conversion (Part III)
Richard Kaplan
Print @, Disk Access, and Graphics
48
Castle Adventure
Dave Trapasso
A new Adventure game
53
Three BASIC Programs
Gordon Speer
National Debt, Box, and Roots
55
Two Graphics programs
Airdrie Ferguson
Graphic Combinations and The Ladder
58
The Model III-A Step Back for Mankind?
M. Barlow
A personal viewpoint
60
April Fool
John Warren
A program to drive people crazy!

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

New Products from Radio Shack and others
10
Letters to the Editor

Readers tell us what’s on their minds
26
Model III Corner
Hubert S. Howe, Jr
The TRS-80 Model III ROM
38
Color Computer Corner
Joseph Rosenman
This month: Review of Technical Reference Manual
62
Questions and Answers
Hubert S. Howe, Jr
Answers to questions from readers
68
Advertising Directory

H & E Computronics – Issue 45

Issue Information:

Name: H & E Computronics

Issue: Issue 45

Date: May 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 45 (1982)(H&E Computronics)

Table of Contents

Features

12
Program Previews
A . A. Wicks
This Month: Auto Writer
18
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
A Program for Economic Order Quantity Analysis
27
Program Conversion (Part IV)
Richard Kaplan
Converting Apple II programs to the TRS-80 Models 1, 2, and 3
30
Software Review
Spencer Koenig
STARFIGHTER by Sparky Starks (Adventure International)
32
Correction

to Interest Formulas program from March 1982 issue
52
Assembly Language for Rank Beginners (Part 3)
Joseph Rosenman
Z-80 Registers and flags
44
Spellwide, Falling, and Plink
Gordon Speer
Three BASIC programs
49
The New Leader
Anthony T. Scarpelli
Reduce waiting time for PRINT#-1 and INPUT#-2 statements
51
Honest John
Robert T. Huff
A program to determine a winner for ANY decision
52
SCRIPSIT II and the NEC Spinwriter 5530
James H. Wilbanks, Ph.D
Review of both a word processor and a printer
53
Software Tutorial
Joseph Rosenman
NEWDOS/80 Version 2.0 by Apparat, Inc
55
Software Review
George Kwascha
SCARFMAN from the Cornsoft Group
56
Text Manipulation for Word Processing
Mel Patrick
Several subroutines to help BASIC word processors
60
Names
Wayne F. Cummings
A program to generate original names

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

New Products from Radio Shack and others
6
Letters to the Editor

Readers tell us what’s on their minds
20
Model III Corner
Hubert S. Howe, Jr
This Month: The TRS-80 Model III RAM
36
Beginner’s Corner
Spencer Koenig
Adventures with an ill modem
38
Color Computer Corner
Joseph Rosenman
Graphics in Extended Color Basic
48
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
A Program for Amortization Tables and Balloon Notes
68
Advertising Directory

H & E Computronics – Issue 46

Issue Information:

Name: H & E Computronics

Issue: Issue 46

Date: June 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 46 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

10
Program Previews
A. A. Wicks
This Month: GRAMMATIK
24
Program Conversion (Part V)
Richard Kaplan
CP/M to TRSDOS and TRSDOS to CP/M
26
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Break-even analysis for more than two alternate investments
36
Coins
Cordon Speer
A disk-based coin inventory program
42
Five BASIC Programs
Jim J. Jordan
Chase, Reaction Time, U.S.A., Selling Price, and Loan Processor
46
No Star Baseball
Bradley Schickling
Batter up!
51
Assembly Language for Rank Beginners (Part 4)
Joseph Rosenman
Shifts, rotates, and assembly language statements
54
Software Reviews
Elliott Forman
Smart Terminal from Howe Software
56
A Twenty-First Century Reminiscence
Michael Herbert Shadick
Or “I remember the TRS-80”
60
Metric Conversions
Jack Willett
Metric Conversion Calculator

Regular Departments

2
Bits and Pieces
Howard Y. Cosman
Publisher’s Remarks
4
The Crystal Ball

New Products from Radio Shack and others
7
Letters to the Editor

Readers tell us what’s on their minds
14
Model III Corner
Hubert S. Howe, Jr
This Month: RS-232-C Communications
32
Beginner’s Corner
Spencer Koenig
Let your computer put its ear to the ground
38
Color Computer Corner
Joseph Rosenman
Talking to model ones, taking the bus, and communicating
40
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
Break-even and payback period analysis
68
Advertising Directory

H & E Computronics – Issue 47

Issue Information:

Name: H & E Computronics

Issue: Issue 47

Date: July 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 47 (1982)(H&E Computronics)

Table of Contents

Features

22
Wanna Double your Disk Capacity??
Glen M. Harper
with Nearly No $$$ Expenditure??
24
Matrix Multiplication
James J. Gaffney
Multiply two Matrices
26
Program Previews
A. A. Wicks
This Month: New Electric Pencil
32
Program Conversion (Part VI)
Richard Kaplan
Differences between various dialects of BASIC
36
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Real Estate Depreciation
40
Software Reviews
Joseph Rosenman
LABLMAKR by ETS Center
43
Assembly Language for Beginners (Part 5)
Joseph Rosenman
Getting acquainted with EDTASM
50
Angles, Pyramids, and Hair-Growing?
C. Brian Honess
Design your own Pyramid!
56
Double Precision Calculator
Stephen Radin
A calculator with memory registers and special functions
58
Flag, Rooter and Rootloop, and Standard Deviation
Gordon Speer
Three BASIC programs
60
A Software Lowercase Modification for SCRIPSIT Files
January Smith
Print lower case on an unmodified TRS-80 Model I

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
9
Letters to the Editor

Readers tell us what’s on their minds
12
Beginner’s Corner
Spencer Koenig
This Month: Bulletin Board Systems
38
Color Compuper Corner
Joseph Rosenman
This Month: Videotex and Compuserve
47
Model III Corner
Hubert S. Howe, Jr
This Month: TRS-80 Model III Technical Reference Manual
48
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
Simulating a cash register with the pocket computer
68
Advertising Directory

H & E Computronics – Issue 48

Issue Information:

Name: H & E Computronics

Issue: Issue 48

Date: August 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 48 (1982)(H&E Computronics)

Table of Contents

Features

10
Program Previews
A. A. Wicks
This Month: Business Programs for TRS-80 Model I/III
11
IRS – Information Retrieval System
Peter Ansbacher
Keep track of your articles in computer magazines
24
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
The Transportation Method of Linear Programming
36
The Beale Treasure
Cordon Speer
Decipher these and you can discover buried treasure!
45
I’s, J’s and their Relationship to Baseball
C. Brian Honess
How you can work out the standings
53
Assembly Language for Beginners (Part 6)
Joseph Rosenman
More about the CPU and the ALU
55
Program Conversion (Part VII)
Richard Kaplan
More differences between the TRS-80 Models I, II, and I l l
58
The Versatile Peeker
Friedhelm Hoehne
Understand memory addressing in the TRS-80

Regular Departments

2
Bits and Pieces
Howard Y. Cosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
6
Letters to the Editor

Readers tell us what’s on their minds
20
Color Computer Corner
Joseph Rosenman
This Month: Diagnostics ROM, Ghost Cobbler, and Scepter of Kzirgla
30
Beginner’s Corner
Spencer Koenig
This Month: Lend an Ear to the Big Boys (Part 1)
40
Model III Corner
Hubert S. Howe, Jr
This Month: Cassette Input and Output
48
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
A Retail Package for the Pocket Computer
68
Advertising Directory

H & E Computronics – Issue 49

Issue Information:

Name: H & E Computronics

Issue: Issue 49

Date: September 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 49 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

14
Program Previews
A. A. Wicks
This Month: The Custom TRS-80 by Dennis Bathory Kitsz
16
Array of Hope for Basic Programmers
Arne Rohde
First of a new series
20
Program Conversion (Part VIII)
Richard Kaplan
Non-Microsoft BASIC
26
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
A Program for the Simplex Method of Linear Programming
33
Hardware Reviews
Joseph Rosenman
The EPSON Graftrax
47
Records and Files
Gordon Speer
Using sequential and random files
50
Monthly Expenditure Information Package
Bill O’Neill
Keep track of your monthly expenses
53
Pregnancy and the Computer
Bob Krotts
How to cope
54
Assembly Language for Beginners (Part 7)
Joseph Rosenman
Introduction to assembler directives
57
Scramble
Frank S. Kasper
Scramble or unscramble jumbled words
58
Z-80 Reference Guide
Joseph Rosenman
A Z-80 instruction reference table

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
10
Letters to the Editor

Readers tell us what’s on their minds
38
Beginner’s Corner: Book Review
Spencer Koenig
Intermediate Programming for the TRS-80 by David L. Heiserman
40
Color Computer Corner
Joseph Rosenman
This Month: Spectaculator and Space War
42
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
This Month: A General Ledger Program for the Pocket Computer
68
Advertising Directory

H & E Computronics – Issue 50

Issue Information:

Name: H & E Computronics

Issue: Issue 50

Date: October 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 50 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

14
Program Previews
A. A. Wicks
This Month: E/Z Screen
17
Array of Hope for Basic Programmers (Part 2)
Arne Rohde
Searching techniques
20
Four BASIC Programs
Gordon Speer
Kaleidoscope, Gascost and Permile, Balloon
24
Assembly Language for Beginners (Part 8)
Joseph Rosenman
This month: Let’s print the alphabet!
26
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
This month: Cash flow analysis for real estate and other investments
42
Program Conversion (Part IX)
Richard Kaplan
Alternative operating systems for the Model I/III
48
Cottage Computery Comes of Age
Michael Herbert Shadick
How far has the computer age really come?
50
Build with the Electric Pencil
Jerome I. Weintraub
Use the Electric Pencil to create BUILD files
52
How to Get Rich and Famous!
C. Brian Honess
Solve some famous mathematical problems with your computer
57
Epson MX-80 Graftrax Initialization Program
Joseph Rosenman
Enable yourself to use the powerful features of GRAFTRAX

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
9
Letters to the Editor

Readers tell us what’s on their minds
32
Beginner’s Corner
Spencer Koenig
Lend an ear to the Big Boys (part 2 )
40
Color Computer Corner
Joseph Rosenman
This Month: TRS-80 Color Basic, Color Berserk, Sir Eggbert Jumper
60
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
This Month: Solving Simultaneous Equations
63
Questions and Answers
Hubert S. Howe, Jr
Answers to questions posed by readers
68
Advertising Directory

H & E Computronics – Issue 51

Issue Information:

Name: H & E Computronics

Issue: Issue 51

Date: November 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 51 (1982)(H&E Computronics)

Status: Complete

Table of Contents

Features

9
Program Previews
A. A. Wicks
Versaledger II
16
Array of Hope. for Basic Programmers (Part 3)
Arne Rohde
Non-sequential searching
17
Just Like Fire
Michael Herbert Shadick
Guest editorial
28
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
The graphical method of linear programming for solving simple business problems
40
The Cardwriter
Anthony T. Scarpelli
Send postcards to your favorite TV stations
42
Assembly Language for Beginners (Part 9)
Joseph Rosenman
Alphabet printing and some new instructions
46
Phone Bill Sorting Program
Dan Keen and Dave Dischert
Sort your monthly bills from Ma Bell
49
Software Review
Joseph Rosenman
Super Utility Plus by Kim Watt
54
Correction

to “The Transportation Method of Linear Programming” from our August 1982 issue
55
Program Conversion (part 10)
Richard Kaplan
Summary of topics covered, plus a practical example
57
Software Review
John Wilson
Defense Command from Big Five Software
58
Macsmap
W. G. MacSwain
Create a map of the entire granule usage of your Model I diskettes

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
12
Beginner’s Corner
Spencer Koenig
This month: The beginner’s library (which books to buy)
15
Letters to the Editor

Readers tell us what’s on their minds
24
Color Computer Corner
Joseph Rosenman
This Month: 6809 Assembly Language and Galax Attack
36
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
This Month: Ratios for the real estate investor
68
Advertising Directory

H & E Computronics – Issue 52

Issue Information:

Name: H & E Computronics

Issue: Issue 52

Date: December 1982

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 52 (1982)(H&E Computronics)

Table of Contents

Features

12
Program Previews
A. A. Wicks
DOS Random Access & BASIC File Handling by H. J. Mueller
14
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Regression Analysis with Confidence and Prediction Limits
15
Hardware Previews
A. A. Wicks
Microbuffer from Practical Peripherals
16
Guest Editorial
Michael Herbert Shadick
What’s all this brouhaha about video games?
22
Array of Hope for BASIC Programmers (Part 4)
Arne Rohde
Disk arrays and B-trees
28
Grid, Monogram, and Do-it-Yourself Brain Surgery
Gordon Speer
Two BASIC programs and more
32
Assembly Language fdr Beginners (Part 10)
Joseph Rosenman
Character displays and program tracings
44
Change Baud Rates on SYSTEM Tapes
Kenneth R. Meyer
A utility program for the Model III only
46
Invisible Passwords for the TRS-80
Jake Siepert and Brett Hobbs
How to hide your passwords so nobody can see them
48
PERT – A Planning and Control Technique
C. Brian Honess
Program Evaluation and Review Technique
58
The Graftrax Connection
George F. Greenwald
Correct EPSON’s errors explaining how to use this feature
60
Serious TBUG
Steve Brown
High memory TBUG with hard copy option

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
10
Letters to the Editor

Readers tell us what’s on their minds
24
Beginner’s Corner
Spencer Koenig
The meeting of parallel lines
36
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
This Month: A set of binomial distribution routines
42
Color Computer Corner
Joseph Rosenman
This Month: EDTASM + and ZBUG monitor
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 53

Issue Information:

Name: H & E Computronics

Issue: Issue 53

Date: January 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 53 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

11
Program Previews
A. A. Wicks
Maxi CRAS and Data-Writer
20
Array of Hope for BASIC Programmers (Part 5)
Arne Rohde
Sorting it Out
23
Retiree “Bytes” World of Personal Computery
Micheal Herbert Shadick
Computery for Seniors
23
Apha Program
G. A. Concha
Chemistry on the computer
28
Assembly Language for Beginners (Part 11)
Joseph Rosenman
Random Screens
30
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #1: General Ledger Menu
32
Software Reviews
Elliott Forman
Monitor #5 from Howe Software
38
Program Conversion (Part 11)
Richard Kaplan
Directly transferring programs from one computer to another
42
Five Subroutines
Leemon Baird Ill
Scrolling, Filling the Screen, and Moving Memory
43
The New Star of Their Show
Michael Herbert Shadick
The Carlton Celebrity Room uses a TRS-80
44
Disk Checkbook Maintenance System
David White
Update of a program published in issue #32
50
Ask Richard
Richard Kaplan
A New Question-and-Answer Series
53
Roulette in BASIC
Ken Knecht
Play Roulette on your TRS-80
55
Born-Again Computery?
Michael Herbert Shadick
Fun and Games and Bibles
56
Serious EDTASM
Steve Brown
Faster and Easier Assembler Programming
60
Surname Conversion
Nadine Willems
Convert Surmanes for proper printing
62
Jack and Jill
Asa F. Tift
A game for the TRS-80 Model III

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
10
Letters to the Editor

Readers tell us what’s on their minds
17
Beginner’s Corner
Spencer Koenig
Clubs: If you can’t Beat ’em (Get it?)
48
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
A Set of Routines for the Normal and Student Distributions
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 54

Issue Information:

Name: H & E Computronics

Issue: Issue 54

Date: February 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 54 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

10
Free Disk Space-Gratis
Norman Cookson
Double the usable file space on a TRSDOS diskette (Model I)
11
Program Previews
A. A. Wicks
ZORLOF-the Magnificent Word Processing System
28
Just One of the Ways
Michael Herbert Shadick
in which the Little Guy (and Gal) Benefits from the Computer Age
20
Array of Hope for BASIC Programmers (Part 6)
Arne Rohde
Sorting Arrays by Extraction, Bubble Sort, Sifting Sort, and Shell Sort
28
Software Review
Richard Kaplan
Tax/Saver II from Micromatic Programming Company
32
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #2: Startup Routines
42
Findit
Ken Knecht
A Simple Data Base Program
46
Boxer: An Experiment in Animation
Steve Brown
An assembly-language game
50
Ask Richard
Richard Kaplan
More questions and answers
53
CLOCK/BAS
Lyndon B. Mitchell
Day of the week and year for your TRS-80 Model I
56
From 16K Level 11 to a Disk-Based System
Dave McGlumphy
A user’s experiences upgrading his computer
59
We Can Compute!
Michael Herbert Shadick
The recession hit at the verge of a computer renaissance.
60
Corrections and Addenda

to programs and articles published in previous issues

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
9
Letters to the Editor

Readers tell us what’s on their minds
31
Color Computer Corner
Andrew Hofer
Assembly Language Graphics
39
Beginner’s Corner
Spencer Koenig
A User’s Tool from the Magic Box-your BASIC Editor
44
Pocket Computer Corner
S. M. & S. L. Zimmerman & L. M. Conrad
Phone List
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 55

Issue Information:

Name: H & E Computronics

Issue: Issue 55

Date: March 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 55 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

10
Program Previews
A. A. Wicks
Trashman from Prosoft
12
Software Review
George Kwascha
ACCEL3 BASIC Compiler from Southern Software
14
Can the Computer Save the Country?
Michael Herbert Shadick
Perhaps!
18
Array of Hope for BASIC Programmers (Part 7)
Arne Rohde
Quicksort and Sorting Literature (conclusion)
24
Software Review
Frank D. Gunseor
REMASSEM-1 from REMsoft, Inc.
26
Ask Richard
Richard Kaplan
Disks and other problems
29
Three Programs and More Brain Surgery
Gordon Speer
Lower-case Letters, Michigan and Graphics, Type
36
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #3: TRANS, A Program to Input Transactions
40
Memory Display
Ken Vaske
Display memory on your video screen
41
Graphics with the Dot Matrix Printer
Dr. Weldon J. Horton
Bit-image Graphics
45
Bowling Statistics Ledger
John F. Rogers
Scoring for bowling leagues
56
Short-Type
Frank Tymon
An effective way to use your word processor
60
Alphabet Puzzle and Fraction Calculator
William H. Patrick
Two BASIC programs

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
16
Letters to the Editor

Readers tell us what’s on their minds
32
Beginner’s Corner
Spencer Koenig
Your most friendly BASIC editor (continued)
43
Pocket Computer Corner
S. M. & S. L. Zimmerman & L. M. Conrad
Space Ship Game
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 56

Issue Information:

Name: H & E Computronics

Issue: Issue 56

Date: April 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 56 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

11
Program Previews
A A. Wicks
This month: ARRANGER from Triple-D Software
16
Sorting It Out
Arne Rhode
Addendum and demonstration program to sorting series
26
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month # 4 C.P.A. Program
28
Ask Richard
Richard Kaplan
Questions about disks, 8 vs. 16 bits, printers, and more
30
Ball Bearings and Football
Gordon Speer
2 BASIC Programs
44
Product Review
Richard Kaplan
LemonAid Loader and Kwik Software
45
Book Review
Spencer Koenig
Learning TRS-80 BASIC by David A. Lien
47
Pirate Software, HBO Dishes, Off-the-Air VTR
Mike Shadick
and Other Alleged “Crimes” of the Computer Age
48
SPACEX
Steve Brown
An assembly-language game
52
Good Programs Do It On Disk
Ken Hipple
Transferring cassette programs to disk
56
Rubik’s Cube and Interval
William H. Patrick
Two BASIC Programs

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
17
Letters to the Editor

Readers tell us what’s on their minds
36
Color Computer Corner

Color Computer programs for the Home, School and Office
37
Pocket Computer Corner
S. M. & S. L. Zimmerman & L. M. Conrad
Inspection Experiment/Game
40
Beginners Corner
Spencer Koenig
Some not-so-Basic Editor functions
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 57

Issue Information:

Name: H & E Computronics

Issue: Issue 57

Date: May 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 57 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

5
Book Review
Andrew Hofer
The Word Processing Book by Peter A. McWilliams
11
Program Previews
A. A. Wicks
This month: INFOSCAN from The Smallsystem Center
20
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #5: Housekeeping Programs
23
Everlastingly at it
Mike Shadick
One “Small” Step for Personal Computery
24
Ask Richard
Richard Kaplan
Question and answer series continues
28
Fast Conversion between Hex and Decimal
Alan R. Lowe
Fast number conversions in BASIC
31
3-Across Mailing Labels
Fred Blechman
A 16K BASIC utility program
37
Service Territory and Manpower Planning Simulation
D. P. Avola
A computer simulation program for the field service manager
48
Home Run with Base 2
James P. Conroy
An attractive, inexpensive dot-matrix printer
50
Sword of Raschkil
Mac Vaughn
An adventure game
52
Five BASIC Programs
William H. Patrick
Escape, Sketchit, Concentration, Tmult, and Magic Squares
58
Word Chase
Jack S. Willett
A program that flashes words across the screen
60
Book Review
Louis Zeppa
Robot Intelligence with Experiments by David L. Heiserman

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
10
Letters to the Editor

Readers tell us what’s on their minds
36
Beginner’s Corner
Spencer Koenig
Potpourri, Left-Overs, and Misconceptions
26
Pocket Computer Corner
S. Zimmerman, L. Conrad, & B. Moseby
The distance, rate, and time problem
36
Color Computer Corner
New color computer products
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 58

Issue Information:

Name: H & E Computronics

Issue: Issue 58

Date: June 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 58 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

11
Program Previews
A A. Wicks
Small Business Accounting from Howe Software
26
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #6: Trial Balance Program
27
The Ultimate Green Screen
Robert Epstein, Ph. D.
The best green screen you can buy
31
Gordon Speer’s Corner
Gordon Speer
Pascal’s Triangle Revisited, Horses, Epson Printers, Brain Surgery
38
Add Your Own Library Commands to LDOS
Bob Bowker
UNKILL command to restore killed files
45
Hardware Review
Bernie Herpin
Microfazer from Quadram Corporation
46
Software Review
Alan Simpson and Jim Smithheisler
DOSPLUS II by Micro Power, Inc.
47
The Home Computer and the Handicapped
Mike Shadick
or The Technology E-X-P-L-0-S-1-0-N
49
Help! My Program’s too Big for my Computer!
Mike Barlow
Several methods for coping with a common problem
51
COBOL Primer #1
Hubbard C. Goodrich
First of a new series on the COBOL programming language
53
Chinese Zodiac
Carl T. Petersen
An ancient system helps you choose your mate
54
Putting the “Pokes” on the Line Printer VII
William O’Connell
Your line printer output can be identical to your screen display
56
Using NEWDOS/80 Disk Files, Part I
John L. Gross
First of a series, this article covers the type “FF” file
58
Ask Richard
Richard Kaplan
Questions about terminals, serial and parallel printers, more
60
On-Screen Artist
David Lewis
EASEL program allows you to draw on your screen in graphics

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball
News and rumors of interest to TRS-80 owners
5
Letters to the Editor
Readers tell us what’s on their minds
16
Beginner’s Corner
Spencer Koenig
Compilers, shmilers! What are they, really?
33
Color Computer Corner
New products and speculations about the color computer
36
Pocket Computer Corner
S. M. Zimmerman and L. M. Conrad
A program for keeping a home, credit card, and inventory lists
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 59

Issue Information:

Name: H & E Computronics

Issue: Issue 59

Date: July 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 59 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

9
Program Previews
A. A. Wicks
Scripsit Made Clear/Zorlof Update
14
PIPS: Parts Inventory Planning Simulation
Dennis P. Avola
Field Service Inventory Program
18
Practical Business Programs
S. M. Zimmerman and L. M. Conrad
Month #7 : Balance the Check Book
25
Twin Cities Computerist Goes Native
Sallie Stephenson
Fred Yonke, Native American Computerist
29
A BASIC Calendar
Anthony Scarpelli
A program to print calendars for any year
43
KOPYKAT
Joe W. Rocke
Model II I features for the Model I
48
Ask Richard
Richard Kaplan
Questions about DBMSs, translators, number storage, more
52
Using NEWDOS/80 Disk Files, Part II
John L. Cross
Some new features for “FF” files in Version 2
53
Maze
James Callagher
Build and print a rectangular maze
56
Hardware Review
K. I. Brown
MDX-2 Interface Expansion Board from Micro-Design
58
Young Person’s Math Program
Robert V. Pritula
A program to help young children learn to solve math problems
59
Video’s Visible Future: the Computer Connection
Mike Shadick
“We ain’t seen nothin’ yet!”

Regular Departments

2
Bits and Pieces
Howard Y. Cosman
Publisher’s Remarks
4
The Crystal Ball
News and rumors of interest to TRS-80 owners
5
Beginner’s Corner
Spencer Koenig
Interpreters-the Crease in Interactive Computing
8
Letters to the Editor
Readers tell us what’s on their minds
21
Pocket Computer Corner
S. M . Zimmerman and L. M. Conrad
The simplex method of linear programming
55
Color Computer Corner
New products and speculations about the TRS-80 color computer
62
Computronics Classified
68
Advertising Directory

H & E Computronics – Issue 60

Issue Information:

Name: H & E Computronics

Issue: Issue 60

Date: August 1983

Publisher: H & E Computronics, Inc.

Pages: 72

TOSEC: H&E Computronics Issue 60 (1983)(H&E Computronics)

Status: Complete

Table of Contents

Features

11
Hardware Review
William D. Allen
Epson FX-80-First Look
14
Program Previews
A. A. Wicks
Screen Artist 11 from The Smallsystem Center
25
Practical Business Programs
S. M. Zimmerman and L. M . Conrad
Month #8: Miles and Move
27
Customer Response Time Calculator
Dennis P. Avola
A model for the field service manager
30
It Started with the Abacus
Frank Tymon
The age of computers is at hand
35
XSNORF
Anthony T Scarpelli and Leigh T. Whittemore
The new, exciting word game for the pocket computer
37
The Computer Revolution: Who are the Beneficiaries?
Name Withheld
Computers for the deaf/blind
39
Cobol Primer #3
H. C. Goodrich
Doing elementary arithmetic
42
Ask Richard
Richard Kaplan
Final installment in this question/answer series
43
Metric Conversion
Hubbard C. Goodrich
Convert all types of measurements with this program
45
Microfuture
Sallie Stephenson
A micro fantasy
46
Everlastingly at it
Mike Shadick
You’re as Young as your Microprocessor!
48
Recipe Locator
James Scalise
A system to help you locate recipes
54
Household Inventory
William Byberg
Keep track of what you own
55
Decoding Passwords
Spencer Koenig
Discover the passwords on your diskettes
57
CASSIO-An End to the Cassette Blues
John Wilson
Save all your data at 1500 baud
59
Add a Fancy Horizontal Scroll
Dan Keen and Dave Dischert
Give your programs this exciting and dynamic feature
60
Perpetual Calendar
Gail D. Landis
Compute any calendar for a 278-year period

Regular Departments

2
Bits and Pieces
Howard Y. Gosman
Publisher’s Remarks
4
The Crystal Ball

News and rumors of interest to TRS-80 owners
9
Letters to the Editor

Readers tell us what’s on their minds
16
Beginner’s Corner
Spencer Koenig
Assemblers-More than One Way to Skin a CPU!
21
Pocket Computer Corner
S. M. Zimmerman and L. M . Conrad
Finding the Effective After Tax Yield on Investments
62
Computronics Classified
68
Advertising Directory