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Gonna be kinda tough with the numbers scraped off.... I suppose the only way to really know without any numbers is to see how many on the board have the same number of pins and see how many possible places there are to fit one. I do not know much about the pinout of these konami customs, but if its like EPROMs, the power and ground pins on chips of like size will likely be in the same place. With that info (and making sure you don't insert one backwards) you should be able to try putting them in the different sockets they will fit in until you get a configuration that will boot. The BEST way to do it I would think would be to substitute one chip at time out on a working PCB, and if it boots, write with a sharpie on top of the chip the location on the PCB (i.e. 7B or 4A) until you have a list of where each chip goes. Unfortunately I understand having a working PCB may not be possible.I'm trying to piece back together a parts board and it came with 3 customs. How can I identify where these go and identify/source the others that are missing?
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Burn test rom and drop it on there.I pulled the two daughtercards off my good board so I can test the customs. Even with all of the known good customs and roms on the second board it's not booting, just stuck on a static screen. Will start poking around later to see if I can get it going.