Radio Shack TRS-80 User Manual page 44

READY
>-
returns
and the
motor
stops,
your program
is
recorded
on
tape. It
is
also
still
in
the
Computer's
memory.
It
has only
been "copied"
out.
7.
Disconnect
the small plug
from
the
Recorder's
REM
jack
and
Rewind
the tape. Dis-
connect the black plug
from
the
EAR
Jack
and Play
the
tape so
you
hear
what
digital
data
sounds
like.
Sounds
terrible,
doesn't
it?
You were
expecting
maybe Lawrence Welk?
Loading
Reversing the process
and
loading (copying) the
program from tape into the
Computer
is
just
as
easy.
1.
Be
sure
the tape
is
fully
rewound and the plugs are
all
in place.
2.
Push
down
the
PLAY
button
until
it
locks.
Set the
Volume control to
about 7-8.
3.
Type
NEW
(to clear
out
any
existing
program).
4.
Type
the
command
CLOAD
The Tape Recorder's
motor
will start
and
data
will
flow
from the tape into the
Com-
puter's
memory
at
the rate of
about 1200
bytes per minute.
As soon
as
the
Computer
senses
the
data,
it
will
flash a *
on the screen;
then
as
it
accepts
each
line
of data, a
second
*
will flash
on and
off.
Watch
the
Video Display.
The
program
is
entered
when
READY
>-
returns
and the recorder
motor
stops.
4.
RUN
the
program
to see
that the data transfer
was
successful. In
the rare
event that
it
was not, repeat the
above
steps,
being sure that
all
cables are properly
connected,
the
Volume
is
set to
7-8 and
the tape recorder
heads are clean. {Listen to
the tape to
be
sure there
was
a
program on
it.)
Miscellaneous
Tape Palaver
To minimize
the
chance of
hitting a "soft spot"
on a tape,
where the oxide
may be
thin or
have
flaked off,
experienced operators routinely
do
a
"double
dump" when copying from
42
IMPORTANT: Too
little
volume
wffi
cause
a
bad
:
'v'
:
"data
dump":
too
much volume
may
result in
:
..
.
%
distortion in the
Tape Recorder and
also
goof -up
.^\tfae
;
"d«J]ip"
::.;.:.::-:
•
....-...
...:•..:•;
]}""'
CLfJAB stands for
"Load^ron*
Cassette*
The*
^display
^seeondone flashing)
is
a
fool-
/
proof indication that data
is
being
loaded onto-the
ftOTE:
If
flue
recorder
does not
-slap-,
reach
around
the
back of the
Computer,
opfeir
the door at the
left
rear
and
press the Reset
butfem inMde^This
will
take the -QofHputer
mt
of the
CLGAD
or
6gAV*E
:
mode
and
return control to the
keyboard.