Radio Shack TRS-80 Owner's Manual page 9

OWNER'J
To
Our
Customers
Congratulations
on your purchase of
the
Model
III
Disk System.
We
think
it's
a
valuable tool
which
will
save
you
work
as
well
as
give you hours of
enjoyment
(or
maybe
both
at
once). You'll
have
all
the
power
of
the
non-disk
Model
III,
plus the
following features:
•
Your
Computer
can
now
be controlled
by
trsdos™
,
the
powerful trs-80
Disk
Operating System, trsdos
is
included
on
a diskette
with
the
Disk System.
•
Using trsdos, you can
run
a
wide
variety of
programs, such
as the
Disk basic
interpreter included
on
the
trsdos
diskette.
a Each
"system"
diskette
has approximately
126,720
bytes
of
storage available
for
your
own
programs and
data;
each
"data"
diskette has 178,944 bytes
available.
8
You
can
load
and
save data
at
the
approximate
rate
of 250,000
bits
per second.
•
Your system can continue
to
grow
in
power
and convenience.
When
Radio
Shack issues
improvements and enhancements
to
the
system programs,
you
can "install"
them
simply by obtaining
a
new
release
of
the
trsdos
diskette.
Model
III
Manuals
Publications
related to the use of the
Model
III
Disk System:
1
Model
III
Disk System Owner's Manual
(this
manual). We'll
call
it
the
"Disk
Manual"
for short.
2.
Model
111
Disk System Quick Reference Card.
3.
Model
III
Operation
and
basic
Language
Reference
Manual,
the
"Model
III
Manual"
for short.
4.
Model HI
basic Quick Reference Card.
For Disk Operation:
This
Disk
Manual
supplements
the
Model
III
Manual.
Use
the
Disk
Manual
as
the
primary source of
information; we'll
tell
you
when
to
refer to the
non-disk
Model
III
Manual
For Non-Disk
Operation:
To use
the
Computer
as a
non-disk system,
all
you need
is
the
Model
III
Manual.
For
Programming
Information:
The Model
III
Manual
contains
most
of
the
programming information, except
that
which
pertains to
disk input/output. In
this
manual,
we
will
assume
that
you
r
i