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Braze Technologies
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Innovative solutions
for the "classic" arcade collector |
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| Donkey Kong High Score Save
Kit -- Installation Guide |
Step 0: Turn off power to the game
It may possible to install this kit without removing your board from its cabinet,
however, you may find it easier to install the kit if you do remove the board. In
that case, pay careful attention (or label), any wire connections as you disconnect
your board so that you can correctly rehookup the game PCB afterwards. If your board
uses the large 44 pin edge connector, take note of which side of the connector is
facing the parts side of the board and which side faces the solder side, This connector
is typically not keyed and can be inadvertantly plugged in backwards - ouch! It
is recommended that you label the connector faces with something like "parts side"
or "solder side".
Step 1: Locate the CPU board
There are 2 different types of boards this kit can be installed into. Locate the
CPU board for your type of Donkey Kong Board. In general, the installation is the
same between board types, only the Z80 chip location is different.
CPU Boards
Click images for a larger view |
Donkey Kong |
Donkey Kong 4-Board |
Step 2: Remove the Z80 CPU chip
Locate and remove the Z80 chip on the CPU board. Use the above photos to assist
in locating it. See Z80
Chip Identification for additional information. The Z80 chip is a 40 pin (large)
chip, located at 7C (for the 2-boardset games or 5C for the DK 4-boardset game).
Remove the chip gently by using a flat head screwdriver to pry it out of its socket
from each end. Be careful not to bend any of the pins. If any pins do get inadvertently
bent, you will need to straighten them out before the next step. Needle nose pliers
work the best for this.
Step 3: Insert the Z80 into the daughter card
Insert the just removed Z80 chip into the empty 40 pin socket on the High Score
Save Kit. Make sure pin-1 is correctly oriented. Pin-1 is marked on the Z80 chip
usually 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. There should also may be a small sticker
on the daughter card marking pin-1.
Pin-1 Identification
Click images for a larger view |
Z80 CPU Chip |
High Score Daughter Card |
Pin-1 Identification |
Step 4: Insert the daughter card into the CPU board
Insert the daughter card back into the Z80 socket on the CPU board where the Z80
chip was originally removed from. Again, make sure pin-1 of the Z80/daughter card
is oriented to correctly match pin-1 on the CPU board. Use the photos as a guide.
The header on the daughter board has pins that are more heavy duty than the original
Z80 pins, thus you will need to press very firmly to get the daughter card to be
fully inserted into the original Z80 socket.
Step 5: Double check your work
Review the steps and double check that Z80 is properly installed into the daughter
card with no bent pins and that it is correctly oriented for pin-1. And that the
daughter card is also installed snug into the z80 socket with pin-1 matched up.
Lastly, verify the jumper is selected to match your game.
Step 6: Reinstall CPU, powerup game and enjoy!
Reinstall your board into the cabinet if necessary, and then powerup your game.
You should immediately see the
bootup screen. You will
have 5 seconds to press P1 and enter
setup mode, or the
game will timeout and automatically transition to gameplay mode.
If the game does not come up, turn power off immediately, double check your work,
and read over the trouble
shooting section.
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