How to convert TMNT from 4 player to 2-player?

SilverDuck

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I've learned that with a ROM swap, a 4-player TMNT can become a 2-player. Are these ROMS socketed, or soldered? Is the 2 player data available, so that anyone with a ROM writer can make these? Thanks!
 
Should be socketed, the roms are available (the ones from Mame). The hobbyroms guy should be able to make them for you.

I've learned that with a ROM swap, a 4-player TMNT can become a 2-player. Are these ROMS socketed, or soldered? Is the 2 player data available, so that anyone with a ROM writer can make these? Thanks!
 
Thanks!

Has anyone here done this, and be able to tell me which roms to replace?
 
You need to replace the four socketted ones that are clustered together, its 2x27c010s and 2x27c512s. The actual silk screening varies from board to board so giving location numbers often doesnt line up.
 
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