Specifications
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1.
Always use lowest possible
brightness
and
contrast
control
settings
during
game operation.
2.
Games
containing
stationary
white
or
light
colored
objects
should
not
be
played
for
extended periods
of
time
.
3.
FollOw
your
projection
TV owner's
manual
for
proper
viewing
conditions
for
programming
.
SYSTEM DESCRIPTION AND OPERATION
The Intellivision II system consists
of
a Master
Component
with two detachable hand
con-
trollers, an antenna
switch
box, RF
connecting
cable and a
wall-mounted
transformer
unit.
The Master
Component
operates in
conjunc-
tion with a
color
television set
and
an
I
ntelli-
vision game cartridge. Peripheral
equipment
(such
as
the
Intellivoice'·
Voice Synthesis
unit)
may also
be
used with the
Intellivision
II
system.
The Master
Component
system is based on
two processors. One
is
a
16
bit
microprocessor
(CPU) that computes the game
action
against
the stored program rules.
The
second
is the
Standard Television Interface
Circuit
(STIC)
that interprets a condensed
memory
area
and
uses this to generate a
color
video
signal.
The video signal
is
applied to the RF
modulator
to provide the television signal.
The
user's
color
television receiver
is
used
for
the video
display.
User interaction
with
the game
programming
is
accomplished by the
inputting
of
numerical
control
and
directional
information
through
the hand controllers.
The audio
is
accomplished
by
using
a
pro-
grammable sound
generator
(PSG)
integrated
circuit
(IC) which generates the
audio
signal
to drive the RF
modulator.
The
user's tele-
vision receiver
is
used
for
the
audio
output.
CONSOLE ASSEMBLY.
The
Console Assembly
contains all electrical
circuitry
necessary
for
recall and processing
of
the
program
data
stored in the game cartridge. Integral
with
the Console Assembly are the
ON/OFF/RESET
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• • _ A
-5-
switch,
power
supply
board
assembly,
logic
board assembly,
and
two hand
controller
assemblies. Recessed
compartments
at the
top
of
the console are
provided
for
storage
of the
hand
controllers
and cables. A slot in
the
right-hand
side
of
the
Console
Assembly
is the
insertion
port
for
the game cartridge.
The
ON/OFF/RESET
switch
is
located
at the
lower
left-hand
corner
of
the
Console
Assembly.
A.
ON/OFF/RESET
SWITCH,
This
switch
has
three
main
functions: When the Master
Com-
ponent
is off,
depressing
this
switch
will
apply
power
to
the
unit. When the Master
Component
is on,
quickly
tapping
this
switch
will reset
the
game
in
play. Finally, when the
Master
Component
is on,
holding
this
switch
down
for
about
3
seconds
and then releasing
it will
turn
power
to
the
unit
off.
B. POWER SUPPLY
BOARD
ASSEMBLY.
The
Power
Supply
Board
converts the
AC
voltage
from the
wall-mounted
transformer
unit
into
the various DC voltages necessary to operate
the
Master
Component.
Additional
circuitry
on
the
Power
Supply
Board
senses the activation
of
the
ON/OFF/RESET
switch
and causes the
Master
Component
to
turn
on
or
off. Electrical
connection
to
the
Logic
Board
is via a 10-pin
connector.
The
Power
Supply
Board
utilizes a
switching
regulator
design
to
accurately
and
con-
tinuously
sense the
current
being drawn by
the
Master
Component.
In this design, the
incoming
voltage
is
rectified
and
then
con-
verted
into
a
square
wave.
The
switching
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