ltadl8/haeK - TRS-80 Color Computer Archive

285 Pages·2005·42.73 MB·English

ltadl8/haeK

GettingStarted with btended Color BASIC,
Cl1984 TandyCorporation, Fort Worth, Texas 76102 U.s.A.
All Rights Reserved.
Reproduction or use, without express written permission from Tandy Corporation, of any
portion ofthis manual is prohibited. While reasonableefforts havebeen taken intheprep
aration of this manual to assure its accuracy, Tandy Corporation assumes no liability re
sultingfrom any errors or omissions in this manual, or from the use of the information
contained herein.
TRS-80 btended Color BASIC System Software;
@ 1984TandyCorporation and Microsoft.
All Rights Reserved.
The system software in the ColorComputer is retained in aread-only memory (ROM) for
mat. All portions of this system software, whether in the ROM format or other source
code form format, and the ROM circuitry, are copyrighted and are the proprietary and
trade secret information ofTandy Corporation and Microsoft. Use, reproduction, or publi
cation ofany portionofthis material without the priorwritten authorization byTandyCor
poration is strictly prohibited.
10987654321
To All New Customers ...
Ifyou don'tknowathing aboutcomputers, relax~thisbook's foryou! It
has you "program".your computer using ils own language - Extended
Color BASIC. You'll slart a little crazy by:
Composing music Playing games
Conducting light shows Painting pictures
Ifyou'restraightbusiness,bepatient. Havingfun'sthefastestwaytolearn,
So spend afew hourswith yourcomputer. Type whateveryou want. Play
with it. Be bold and strange. In other words ... feel at ease! You havean
amazing tool to command.
And to All Upgrading Customers
•••
WelcomebacktotheColorBASICfamily! Letusintroduceyouto...slight
drum roll, please Extended Color BASIC. It has all the features of
non-Extended Color BASIC plus much more.
For example, with Extended Color BASIC you can:
Draw a circle . • Edit a line
Paint a house Square a root
Cool off with a cube Playa symphony
And even try a triangle!
If you've read Getting Started with Color BASIC, you can skip half this·
book:
SkipSection IexceptforChapter9. Chapter9 shows how to use the
Extended Color BASIC "Editor"- agreattime-saver in typing prog
rams.
Read Section II. You'll learn to use the most exciting features of
Extended Color BASIC - high-resolution graphics and music.
Skip Section III.
Read Section IV. This shows how to use the re~t of Extended Color
BASIC's expanded features.
This Is How to Start ...
Connectyourcomputer by referringtoyourIn/roducing YourColorCom
puter 2 or Introducing Your Deluxe Color Computer.
Then power up your computer:
1. Turn on your television set
2. Select Channel 3 or 4 on the television set.
3. Set the antenna switch 10 COMPUTER.
4. Turn on thecomputer. The POWER button ison the leftrearofyour
keyboard (when you're facing the front).
This message appears on your screen:
EXTENDED COLOR BASIC v.r.
© 1880 TANDY
OK
(v.r. is two numbers specifying which version and release you have.)
If you don't get this message:
Turn the computer on and off again.
Adjust the brightness and contrast on your television set.
• Check all the connections.
If you still don', get this message, refer 10 "Troubleshooting and Mainte+
nance" in IntroducingYourColorComputer2orIntroducing Your Deluxe
Color Computer.
Once you do get the above message, you're ready to start.
How Do You Talk to a Computer?
Inthis book, you'll learnhow totalktoyourcomputer.That'sall program
mingis,bytheway.Onceyou learnhow10talktoyourcomputer,youcan
tell it to do whatever you want. (Well, almost.)
Yourcomputerunderstandsalanguagecalled ExtendedColorBASIC.This
isan enhanced form of BASIC- BeginnersAll-PurposeSymbolicInstruc
tion Code. There are lots of computer languages. Extended Color BASIC
just happens to be the one your computer understands.
We'll introduce BASIC words in the order that they're easiest to learn.
When you gelmidway in the book, you mayforget whataword means. If
this happens, simply look il up in your QuiCK Reference Card.
?
•
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CONTENTS
Section I THE BASICS
Chapter 1 Meet yourComputer..............•.......•. 13
PRINT SOUND CLS
Chapter 2 Your Computer Never Forgets
(. .. unless you turn it off...J..•...•••••.•.•. 19
Strings Variables
Chapter 3 See How Easy It Is? . 24
NEW INI'UT COTO RUN PRINT, PRINT;
LIST IFfTHEN
Chapter 4 Count the Beat........................•.•.... 30
FOR ..•TO•..STEP NEXT
Chapter 5 Watch the Clock .. ...........••..••.•••...... 35
CLS Nested Loops
Chapter 6 Decisions, Decisions. .. ....•.••...•.•••...... 40
IFfTHEN END
Chapter 7 Garneso(Chance. .........•..•......•....... 43
RND PRINT@
Chapter 8 Reading.............. ...........•...... 47
DATA READ RESTORE INT CLEAR
Chapter 9 Writing . . 53
EDIT DEL RENUM
Chapter 10 Arith~tk ......................•........... ~
GOSUB RETURN REM
Chapler 11 Words, Words, Words..........•......... 65
LEN LEFTS RIGHTS MID$
Chapter 12 A Pop Quiz . ....•................. 71
INKEYS VAL
Chapter 13 MoreBasics. ................................ 75
SlOP SGN CQNT ABS MEM STRS AND OR