Chapter 9
Using
Cassette Tape
We
will soon
write
and run long
and
powerful programs. It
becomes
tedious
to type them
in
accurately just once, let
alone
each time we
want
to use them.
Impressing
your
friends
with this new
super-whazzoo
Computer is
somewhat more difficult
if they sit
watching old
TV
reruns of Star-Trek while you
take an hour or so
to type in
a program.
There has
to be
a
better
way.
The TRS-80 has a built-in
"Cassette
Tape Interface"
which allows
you
to record and
store
any program
on high
quality
cassette
tape. A full "4K"
of memory
can
be dumped
onto
tape, or loaded from tape, in
about 3 minutes.
Most programs are
shorter
and take even less
time.
That isn't
even enough time
to get
through the deodorant
ads. Besides building
up
your own tape library of computer
programs,
you can exchange
favorite
programs
with
other TRS-80 owners by exchanging
tapes.
Recording
Only
a little practice is required.
Follow the yellow brick
road:
1.
Locate the Recorder,
Interconnecting
Cable and
Radio Shack
Computer
Recording
Tape
cassette.
2.
Connect
the
short cable between the
TAPE
jack on the back
of
the
TRS-80
and
your
Cassette
Tape Recorder:
A. The small
gray
plug goes
into the REM jack
on the
Recorder.
B. The large
gray
plug
goes
into
the AUX jack.
C. The
black
plug goes
into
the EAR jack,
3. Plug the
Recorder into the wall outlet (or
install
batteries).
4. Type
any program into your Computer,
preferably one that is at least
several lines
long.
RUN it to be sure it is entered
correctly.
5.
Load
the cassette tape and
press the PLAY and
RECORD buttons
at the
same
time
until
they lock.
6. "Dump"
the
program onto tape by typing
the command:
CSAVE
The
motor on the
Recorder
will start and
you'll be
recording the
Computer's
program
onto
tape.
Watch the
Video screen. When
Back
at the beghijamg
of
this:
Manual
we gave
a
procedure
fo*
connecting
and
using the
Tape
Recorder
(remember.
,
.that
was
for
aS
the tm
wtientonesl),
ket'stafcrouHSSMfwith
thfe-
Chapter to be
sure we've
covered
EVBRYON
Dumped
and loaded are
everyday
terms
used
_.
computer
people
for
storing and
"playing
back"
computer
programs
(onto tap?
and from
tape)
KQTE:
A:"dummy:plu
:
g"
is
provided with
Radio;
Shaefc*s CT&41
—
you
must
plug
this
into tie
- ;
:
MICjack
ob
the
CTR-41
(this prevents
sound picks
up from
the
buift-in
Mic
when,
"dumping"
your
TR&8®
programs
onto
tape^
.
CSAVE
jstod^for^&aJY^oH-.Cassette,*
'-..
'
,
41
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