Table Of Content.I
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COMPUTE!'s FIRST BOOK OF
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Greensboro, North Carolina
The following articles were originally published in COMPUTE! magazine, copyright
1984, COMPUTE! Publications, Inc.:
"PC Monochrome Graphics" (November); "IBM Personalized Form Letters"
(December).
The following articles were originally published in COMPUTE!'s PC & PCjr magazine,
copyright 1984, COMPUTE! Publications, Inc.:
"Martian Prisoner" (March); "Spelling Bee" (March); "The 8088 Microprocessor:
Brains of PC & PCjr" (March); "Word Hunt" (March); "Choosing a Display for your
PC/PCjr" (April); "Getting Started with a Disk Drive" (April); "The Screen Machine:
Graphics Made Easy" (April); "Aardvark Attack" Oune); "Gradebook" Oune);
"Munchmath" Oune); "Notemaker" Oune); "PC/PCjr PEEKs and POKEs" Oune);
"States and Capitals Tutor" Oune); "Beginning BASIC: READ, DATA, and RESTORE"
Ouly); "Calendar Maker" (July); "Custom Characters" Ouly); "Customizing the Func
tion Keys" Ouly); "Laser Barrage" Ouly); "Bowling Champ" (August); "Quickversi"
(August); "Simplified Date and Time" (August); "Super Directory" (August); "BASIC
Hints" (September-originally titled "Beginning BASIC: Variables, Arrays, and PRINT
Using"); "Experiments in Machine Language" (September); "TERMPlus" (September);
"Creating Animation with PUT and GET" (October-originally titled "Animation
Made Easy"); "Sculpt-a-Shape Graphics Editor" (October).
The following articles were originally published in COMPUTE! magazine, copyright
1985, COMPUTE! Publications, Inc.:
"IBM Rebound" (February); "IBM BASIC's Undocumented SHELL Command" (April);
"Home Financial Calculator" (May); "IBM Disk Rx" (May); "Unlocking IBM BASIC
Programs" Oune); "Chess" (September).
Copyright 1985, COMPUTE! Publications, Inc. All rights reserved
Reproduction or translation of any part of this work beyond that permitted by
Sections 107 and 108 of the United States Copyright Act without the permission of
the copyright owner is unlawful.
Printed in the United States of America
1098765432
ISBN 0-87455-010-6
The authors and publisher have made every effort in the preparation of this book to insure the ac
curacy of the programs and information. However, the information and programs in this book arc
sold without warranty, either express or implied. Neither the authors nor COMPUTE! Publica
tions, Inc., will be liable for any damages caused or alleged to be caused directly, indirectly, in
cidentally, or consequentially by the programs or information in this book.
COMPUTE! Publications, Inc., Post Office Box 5406, Greensboro, NC 27403, (919)
275-9809, is one of the ABC Publishing Companies and is not associated with any
manufacturer of personal computers. IBM PC, PC XT, and PCjr are trademarks of
International Business Machines, Inc.
Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Chapter 1. Getting More from Your IBM . . . . . . . . . . . . . 1
Simplified Date and Time
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Choosing a Display for Your PC/PCjr
Ottis R. Cowper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Getting Started with a Disk Drive
Patrick Parrish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Super Directory
Charles Brannon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TERMPlus: Upload and Download with Cartridge BASIC
Dale McBane and Jeff Hamdani . . . . . . . . . . . . . . . . . . . . . . . . 29
Disk Rx
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 2. Recreation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Martian Prisoner
Alan Poole / Translation by Gregg Peele . . . . . . . . . . . . . . . . . . 55
Aardvark Attack
Todd Heimarck / Translation by Tim Victor . . . . . . . . . . . . . . . 60
Laser Barrage
Sean Igo / IBM Version by Kevin Mykyty11 . . . . . . . . . . . . . . . . 65
Rebound
Chris Metcalf and Marc Sugiyama . . . . . . . . . . . . . . . . . . . . . . 71
Quickversi
David Bohlke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Bowling Champ
Joseph Ganci / Tra11slatio11 by Tim Victor . . . . . . . . . . . . . . . . . 83
Chess
Joh11 Krause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Chapter 3. Applications . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Home Financial Calculator
Patrick Parrish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Notemaker
Alfred f. Bniey ................................... 125
Personalized Form Letters
Donald B. Trivette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Calendar Maker
Paul C. Liu / Translation by Kevin Mykytyn 135
Chapter 4. Education ...... ·. . . . . . . . . . . . . . . . . . . . . . 155
Munchmath
Gerald R. Anderson / Tra11slation by Jeff Hamdani ......... 157
States and Capitals Tutor
Enoch L. Moser/ Translation by Tim Victor .......... . . .. 162
Word Hunt
Robert W. Baker / Translation by Patrick Parrish . . . . . . . . . . . 169
Spelling Bee
Daniel Bonachea / Translation by Gregg Peele . . . . . . . . . . . . 177
Grade book
Stephen Levy / Translation by Gregg Peele .. ............. 182
Chapter 5. Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
The Screen Machine
Charles Brannon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Custom Characters
Sheldon Leemon .... ...... ........... . . ........... 216
Creating Animation with PUT and GET
Charles Brannon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Sculpt-a-Shape Graphics Editor for BASIC Animation
Charles Brannon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Monochrome Graphics
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Chapter 6. Programming . . . . . . . . . . . . . . . . . . . . . . . . . 245
BASIC Hints
C. Regena . ......... ......... .................... 247
Beginning BASIC: READ, DATA, and RESTORE
C. Regena . .... .... ...... ................ ........ 258
Customizing the Function Keys
Melody and Michael A. Covington . . . . . . . . . . . . . . . . . . . . . 266
BASIC's Undocumented SHELL Command
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Unlocking BASIC Programs
Peter F. Nicholson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Chapter 7. Machine Language . . . . . . . . . . . . . . . . . . . . . 277
PEEKs and POKEs
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
The 8088 Microprocessor: Brains of PC and PCjr
Ottis R. Cowper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Experiments in Machine Language
Michael A. Covington . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Source Code for Chess
John Krause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
A. Beginner's Guide to Typing In Programs ........... 311
B. The Automatic Proofreader
Charles Brannon ............................... 313
C. Disk Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Disk Coupon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
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Foreword
Maybe you bought your IBM hoping you could use it at home
for personal use as well as a business tool. Or maybe you
wanted your kids to become computer literate, and since you
had a PC at work, the PCjr seemed like a good choice. What
ever your reason, you chose a powerful machine. And COM
PUTE! Publications has been supporting it continually in our
magazines and books since 1983. This latest publication for
IBM personal computers, COMPUTE!'s First Book of IBM, has
something for every IBM user.
With thinking games (like "Chess" and "Quickversi"),
educational games ("Srelling Bee," Word Hunt," and "States
and Capitals Tutor"), and games that require quick reflexes
("Bowling Champ," "Aardvark Attack," and "Rebound"),
COMPUTE!'s First Book of IBM is sure to give every game
player the fun and challenge he or she wants in a good com
puter game.
Did you think the built-in terminal program TERM was
the only communications software you needed for your PCjr,
only to be surprised to discover that it didn't upload or down
load? Now just add the modifications found in Chapter 1, and
transform TERM into "TERMPlus," a terminal program that
will turn your PCjr into a complete communications terminal
with uploading and downloading capabilities.
Do you find yourself having to enter and reenter the date
and time each time you turn on your IBM because you can't
get the format just right? "Simplified Date and Time" makes
the task easier.
Perhaps you've always wanted to write your own pro
grams with complex graphics? Learn how to create your own
characters and make intricate patterns on a monochrone dis
play. Use "The Screen Machine" and "Sculpt-a-Shape Graph
ics Editor" to design, create, and save vivid graphics to add to
your own programs or simply to recall and admire.
As with all COMPUTE! publications, the writing is clear
and concise. And all the programs have been debugged and
are ready to type in. We've even included "The Automatic
Proofreader," an aid that checks your typing as you enter each
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program line, making program entry a snap. Or, if you'd pre
fer not to type in the programs, you can purchase a disk with
all the programs from COMPUTE!'s First Book of IBM by using
the coupon in the back of this book or by calling toll-free
1-800-334-0868.
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