Star Tech Journal

5
STAR*TECH JOURNAL/AUGUST 1983
ATARI
TECH TIPS
* DANGEROUS DISPLAY HARNESS* USING THE 280 INTERFACE
* FOOD FIGHT JOYSTICK CALIBRATION/SELECTING OPTIONS
Dangerous Display Harness
Immediately check all upright cabinets of the following games
for an unsecured display connector on the main harness. Games
with higher serial numbers have already had the display
connectors properly secured at the factory.
Arabian
UR00001-UR00500
Food Fight
UR00001-UR01501
Millipede
UROOOO 1-UR09997
Xevious
UR00001-UR05499
WARNING: To avoid serious injury to anyone playing or even
touching the game, you must secure the display connector as
described below to prevent short circuiting with high-voltage
components on the display.
On Food Fight games using the Disco or Matsushita displays,
use a cable tie to secure the red display connector (J205B) as
shown. On games using the Electrohome or Atari displays, use a
cable tie to secure the white display connector (J205A) as
shown.
Whenever you install a new display, be sure that the unused
display connector is properly secured to the harness as shown.
Note: The Xevious connectors will look different from the
connectors shown in the illustration. However, the unused
connector(s) MUST be secured to the harness for safety.
To - - - " 7
Display
Unused Connector
Using the ZB0 Interface
To eliminate problems while using the Z80 interface on game
boards, remove Pl from J1 and place Pl on J2. Jumper MREQ
to ground.
Jumper Wire
+5v
Ground Plane
R4
R5
n - - - - - - - - - - - - + - - - - - - t 3 8 MREQ
C ' > - - - - - - - + - - - - + - - - - - 1 4 0 IORQ
-=-~Jumper
Food Fight Joystick Calibration/Selecting Options
The following is a revised version of the JOYSTICK CALI-
BRATION information contained in Chapter 2, page 2-3 of the
Food Fight game manual (TM-229). This revision is applicable
for both the cocktail and upright games.
JOYSTICK CALIBRATION resets the joystick minimum
and maximum values, and should be used whenever the
NVRAM or joystick is replaced. When the JOYSTICK
CALIBRATION test is selected for the upright game, the
display appears as shown in Figure 2-3. Hold the joystick steady
for a full five seconds in each direction (left, right, up, and down).
Press the one-player start button twice to return to the main
SELF TEST menu (see Figure 2-1 in TM-229).
When the JOYSTICK CALIBRATION test is selected for
the cocktail game, the display appears as shown in Figure 2-4.
The display shown in Figure 2-4 indicates that the player-one
joystick is selected for calibration. Hold the player-one joystick
steady for a full five seconds in each direction (left, right, up, and
down). Press the two-player start button and repeat the preceding
procedure for the player-two joystick. Press the one-player start
button twice to return to the main SELF TE ST menu ( see Figure
2-1 in TM-229).
IMPORT ANT: To store new joystick values, you must return to
the main SELF TEST menu and exit the self-test mode by
turning the self-test switch off. If the self-test mode is interrupted
(i.e., the self-test switch is turned off or game power is removed)
before returning to the main SELF TEST menu, repeat the
joystick calibration procedure.
Continued on next page.