To OurCustomers. •
The
TRS-80@ Model III
COITlputer
is avery powerful tool for business, home and
recreation. Twenty years ago, this capability would have costhundreds
of
times as
much as yourModel III cost, and wouldhave taken up an entire room.
In spite
of
its
power
and internal complexity, the Model III canbe quite simple to
operate. In fact, you candetermine
just
how'
'technical" amachine you want it to
be.
At
the simplestlevel
of
operation, you can use RadioShack prepared cassette
programs. All
you
will needto know is how to load and run acassette program, and
howto operate the cassette recorder.
If
this is where you wantto start, read
Chapters 1through 6
of
the Operation Section. You may also want to read about
CLOAD and SYSTEM
in
Chapter2
of
the Language Section.
If
you wantto writeyourown programs and you are abeginner, read Chapters 1
through6
of
the OperationSection, then startreadingthe book, Getting Started
with TRS-80 BASIC. That, plus severalotherRadio Shackbooks, canguideyou to
becomingaprogrammerin BASIC and Z-80 language (' 'machine code'').
If
you already know BASIC, and especially
if
youhaveexperience on aTRS-80
Model I, read the entireOperation Section
of
this manual, as well as the Appendix
whichcompares the Model Iand Model III. The Model III has many unique
features andsome very importantdifferences. Afew minutes spentbefore you
press
(ENTER)
couldsave you hours later.
About Manual
This manual contains operating instructions (Section
1)
and adescription
of
Model
III BASIC (Section 2and Appendix).
It
is arranged
for
easy reference, whether you
are seeking simple
or
technical information. Page numbering starts overat the
beginning
of
eachchapter, and chapternumbering starts overat the beginning
of
eachsection. There is acomprehensive Index at the end
of
this book.
If
you are abeginner,
don't
worry aboutthe technical parts in the Operation
Section.
The
beginning
of
eachchapteris for you. (When you getto the POKE
statements, youcan skip ahead to the next chapter
...
)You
don't
needto read past
Chapter6.
Then,
when you learn simple BASIC programming, you can return and
try
out
all
the'
'goodies" packedintoyourModel III.
