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Swapping Playchoice Games
It is possible to play games, normally not available on Playchoice-10 just by replacing a few EPROMs on an individual game PCB.
Note: You can only use certain NES roms on certain Playchoice game pcbs. The spreadsheet below can help you determine which eprom's are used with which pcb.
Download my Playchoice PCB and NES Hack Specifications Spreadsheet (80 KB)
Here is an example changing a game using a Small Board (Style One) playchoice game:
Beware of Mask ROM Game Boards
Please note that the Nintendo Playchoice PCBs use either Mask ROMs or EPROMs and only the EPROM version is compatible with game swapping among Playchoice and NES games. If you want to swap games on the following boards be sure they are using EPROMs and NOT Mask ROMs. If you are unfamiliar with what the chips look like, see the photo below.
View my section on Playchoice PCB Variations for more information on which games use BOTH Mask ROMs and EPROMs.
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