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Braze Technologies |
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Innovative solutions for the "classic" arcade collector
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Donkey Kong 4-board set
High Score
Save Kit -- Installation Guide |
This is a special install guide for the 4-boardset style Donkey Kong game.
From a high level, the install procedure is the same as the 2-boardset style
Donkey Kong and Junior games, however, there are potentially a couple of
obstacles that may need to be overcome when installing this kit into the
4-boardset style game.
First, is the location of the sound board. The sound board sits is the half
sized board that sits on top of the CPU board. If the sound board is covering
the Z80 CPU, then the sound board will have to be moved to the other half side
to expose the Z80 CPU. See pictures below. fixme, add some photos.
The next potential problem is that on some boardsets, the Z80
CPU is soldered to the CPU board and is not installed in a socket. This can be a
major obstacle.
Step 0: Turn off power to the game and remove boardIt is suggested that
the board be removed from the cabinet before installing the kit. Pay careful
attention (or label), any wire connections as you disconnect your board so that
you can correctly rehookup the game PCB afterwards. All of the connectors should
be keyed and the sizes different.
Step 1: Locate the CPU boardThe CPU board is the board just below, the
half-sized sound board.
Click for larger view |
Step 2: Remove the Z80 CPU chipLocate and remove the Z80 chip on the
CPU board. Use the above photos to assist in locating it. The Z80 chip is a 40
pin (large) chip, located at 7C (for the 2-boardset games or XX 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 cardInsert 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 |
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Step 4: Insert the daughter card into the CPU boardInsert 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 workReview 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: Powerup and 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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