K.1002.2
UNPACKING AND INSTALLATION
The K-1002-2
8
Bit
Audio System
for the
PET
is
a carefu'l'ly
engineered,
manufactured,
and
tested
product
that should operate
perfectly
when handled
and
installed accord'ing to the
following instructions.
Since CMOS integrated
circuits
are used on the board, damage from
static
discharge
is
possjble.
When
handling
the
board,
always
pick
it
up
by
the
output
jack
which is connected to
ground.
Before
plugging
it
jnto
or
removing
it from the PET,
discharge
yourself
to
the PET
case
first.
Installation is
quite
simple,
merely
plug
the
unjt onto
the
user
port
and
second cassette
port
of
the PET.
If other accessories
or
a second
cassette
unit
are
to
be
used,
p'lug
these onto the
edge
fingers
of the K-1002-2.
Our unit
does
not load any
of the user
port
signals
signifjcantly because
of the
CMOS logic
ut
jl
ized.
Any 4,
8, or
16
ohm
speaker
may be
p'lugged
into
the RCA
phono
jack
at
the
rear
of the board. Alternat'ive1y
an
aud'io cable
may
be
p'lugged
in and an
external anplifjer used
for
more
volume such as at
a club
meetjng
or show.
If the K-1002-2 Musjc Software
package
has
been
purchased,
follow
the
instructions included wjth the
cassette
to
verify that
the board is
working.
0therwise
enter the following
BASIC
program
and RUN it:
A=0: B=255:
C=59459
POKE
C,A: POKE C,B: G0T0 20
The resulting
sound should
resemble that
of a
misfiring race car. The volure
control on the board should have a
range from
complete
s'ilence
to
slightly above
the
point
of distortion.
Note that
the
CB2 s'igna1
from the 6522
UIA
is
also connected
'into
the
audjo
anpl
if ier
circu'itry.
Theref
ore any
game
programs
or simple
music
programs
that
use
thjs
signal to
generate
sound will still
be usable with
the K-1002-2. One of
these
prograns
could
also
be
used to check out
the board.
This
completes checkout of the
I Bit Audjo System. If any
problsns
are
experienced,
see
the sectjon
on
troubleshootjng
before returning
the board
to the
factory.
10
20
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