Star Tech Journal

Issue: 1982-February - Vol 3 Issue 12

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* T J FEBRUARY 1982 6
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INVADERS··
, REVENGE
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Just when you thought the battle was over, we introduce Invaders Revenge
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and the challenge continues. Invaders Revenge is a super new game developed
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in England. After months of highly successful collections, Americade Amuse- '
ment, Inc. purchased the exclusive manufacturing rights in the United States.
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The game centers around different groups of Invaders trying t-0 destroy your ship. •
Their patterns get increasingly more difficult to destroy, especially when they
start shrinking and swelling .
Be on guard for Invaders sneaking down and stealing your fuel cells.

If they're not destroyed before reaching the top of the screen they fuel the
mother ship which will start moving back and forth, firing fast missiles at you .
If it's necessary to go around another object, hold your fire button and your ship
thrusts upward. If you are successful you'll have the chance to maneuver your
ship into position to dock with your base for bonus points and fuel before you
resume battle. But watch out, this time as you shoot the invaders, they will
randomly fall toward your ship.
* -Add new life to Space Invaders (Regular or Deluxe)
* Simple installation
* Exciting new sounds
* Kit comes with new game board, program chips, new main plexi and control
panel, plus easy instructions
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ORDER FROM:
Americade Amusement, Inc.
2009 Old Cuthbert Road
Cherry Hill, NJ 08034
609-428-3869
(IMMEDIATE SHIPMENT AVAILABLE)
$550
IN STOCK NOW
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S T J FEBRUARY 1982 7
GO'I 'J'I JTEB
Cal's
Coin
College
POP* BUMPER* SCORING* SWITCH
FIGURE 1
The pop bumper scoring
switches on Gottlieb's pinball
game, "Black Hole", have
been changed to eliminate the
mechanical wear on the switch
caused by the insulating yoke
slamming the scoring switch
closed when the pop bumper
is activated. Gottlieb will now
use the configuration shown in
Figure 1 on all of its future
games. A contact of the
switch now rests atop the
insulating yoke, keeping the
switch open. When the pop
bumper is activated, the
switch closes by just the
spring tension of the contact,
allowing for a more reliable
switch.
School for
Electronic Games
Electronic pinballs -
one week, video games
- one week, by
SCHEMATICS! Our
11th year! CAL'S
COIN COLLEGE,
P.O. Box 810, Nicoma
Park, OK 7 3066.
Phone: 405-769-5343
YOKE
COURTESY OF GOTTUEB'S TECHNICAL NEWSLETTER "ON TARGET"
GREMLIN/SEGA'S
DIGITAL* TECH *TEST* (PART 2)
5) What is the level of Q after the rising edge of the clock pulse occurs? Of Q?
_f1_
6) What are the levels of Q and Q in the following circuit?
SERVICE
SWITCH
0=
NC
GND
NO
Q=
7) What are the levels of the outputs on the 15th clock pulse?
PART 1 ANSWERS
1. a= 1
2 . 01=0
02=1
3. Q=O
4 . Q=O
BINARY COUNTER
_n_n__
----t>
CLK
Q
Az
Q
B•
+5
Q-
c~
CLR
Q -
D=
(PART 2 ANSWERS NEXT MONTH)

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