Bosconian 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 re-hookup the game PCB afterwards. Take note of
which side of the 44-pin 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 inadvertently 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
Locate the CPU board for your Bosconian Board.
CPU Board
Click images for a larger view |
Midway CPU |
Step 2: Remove the main Z-80 CPU chip
Locate and remove the main Z-80 at board location 4M. Use the picture above to assist
in locating it. See Z80
Chip Identification for additional information. The Z80 chip is a 40 pin (large)
chip.
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 Z-80 into the daughter card
Insert the just removed main Z-80 chip into the empty 40 pin socket on the
Bosconian High Score Save kit. Make sure pin-1 is correctly oriented. Pin-1 is marked on the
Z-80 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 |
Bosconian High Score Kit |
Pin-1 Identification |
Step 4: Insert the daughter card into the CPU board
Insert the daughter card back into the Z-80 socket on the CPU board where the
Z-80
chip was originally removed from. Again, make sure pin-1 of the Z-80/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
Z-80 pins, thus you will need to press very firmly to get the daughter card to be
fully inserted into the original Z-80 socket.
Installing the kit |
Kit fully
Installed |
Step 5: Double check your work
Review the steps and double check that Z-80 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 Z-80 socket with pin-1
matched up.
Step 6: Reinstall CPU, power-up game and enjoy!
Reinstall your board into the cabinet if necessary, and then power-up your
game.
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