Missile Command Multigame Kit -- Installation Guide
Before installing this kit, make sure your Missile Command
game is fully functional.
The Multigame kit can only work on a
fully functional
Atari Missile Command board.
This is a good time to enter test mode, make sure the RAM
test passes, make sure the test mode screen does not indicate
any other failures.
Then exit out of test mode, make sure game play, switches, and game sounds
are all working correctly.
You are now ready to start the installation.
Turn your game off and locate the main game PCB.
Refer to the Missile Command manual for the location of this
boardset.
For MC upright, the game PCB is usually attached to the right
side of the cabinet (as viewed from the back).
The board may have a screw attaching the boardset to the side
of the cabinet, which will need to be removed so that the
boardset can be removed for easy access.
When removing the boardset it is recommended that you label the
connector faces with something like "parts side" or "solder side"
to insure when re-installing the boardset that everything gets
re-hooked up correctly.
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PCB location
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PCB location
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Missile Command PCB - Key Component Locations
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Locate and remove the 6502 CPU chip on the boardset.
Use the picures to assist in locating the CPU.
See 6502 Chip Identification
for additional information.
The 6502 CPU chip is a 40 pin (large) chip, located in the
corner of the board at location C2.
See the yellow square in the picture above.
Note: there are two 40 pin chips on the boardset,
make sure you remove the 6502 CPU and not the pokey chip.
The 6502 CPU is farthest away from the main edge connector
adjacent to the smaller "catbox" connector. The pokey chip is
near the DIPs.
Remove the chip gently by using a flat head screwdriver
to pry it out of its socket from each end.
Some of the Atari boardsets have open frame sockets which
do not protect the PCB traces.
Be careful not to scratch any of the PCB traces underneath the socket.
Also be careful not to bend any of the pins.
If any pins do get inadvertantly bent, you will need to straighten
them out before the next step.
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MC 6502 CPU location
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Multigame Pin-1 Identification
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While keeping the protective foam in place,
insert the just removed 6502 CPU chip into the empty 40 pin
socket on the Multigame Kit.
Make sure pin-1 is correctly oriented.
Pin-1 is marked on the 6502 CPU chip by some type of indentation
or circle molded into the plastic.
The end of the chip with the marking, needs to match up with the
socket on the daughter card that also has a marking on the plastic.
Pin-1 is also labelled on the kit pcb with a large "1".
If the 6502 chip is installed backwards it will cause
permanent damage to the 6502 chip.
Remove the protective foam and
insert the CPU daughter card back into the 6502 CPU socket on the
boardset where the 6502 CPU chip was originally removed from.
Again, make sure pin-1 of the 6502/daughter card is oriented
to correctly match pin-1 on the boardset.
Pin-1 will be on the inward facing side of the CPU socket.
Use the photos as a guide.
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Multigame with 6502 installed
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Multigame Installed
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Review the steps and double check that 6502 CPU is properly
installed into the daughter card with no bent pins and that
it is correctly oriented for pin-1.
Check that the daughter card is also installed snug into the
6052 CPU socket at C2 with pin-1 matched up.
Check to make sure the daughter card is not inadvertantly
off by one row such that one pin on each side is off the
end of the socket.
REPEAT: If any of these devices are incorrectly installed
it may cause permanent damage to the boardset or kit.
Re-install your board into the cabinet, hookup the edge connector
with the original orientation and then powerup your game.
Once the game is up and running, this is a good time to enter
testmode and to configure the game
settings
to your personal preferences.
If the game does not come up, turn power off immediately,
double check your work, and read over the
trouble shooting section.
Multigame Selftest
Multigame Setup
It is suggested that this step is only done
after verifying the multigame is working.
Defering this step can help in
trouble shooting,
as one of the key trouble shooting procedures
is to un-install the kit and revert it back to plain Missile
Command for verification.
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ROM Locations
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ROMs Removed
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