Weird Columns 2 problem

airthrow

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So I have a working Columns board, and a non-working Columns 2. I put the Columns 2 EPROMs in my working Columns 1, and the game started up, but then when you try to enter a game, it crashes.

Any idea why it would boot on Columns 1 board but crash, and not boot at all on my columns 2 board?

edit: I found a document stating "The games on Sega C2 boards are protected by an Altair EPM5032DC (read protected) located at position 27.", I tried swapping the Columns 2 eproms AND the EPM5032DC to the working board, and it just boots up as a black screen. Do I maybe have a bad protection chip? Are the Altair protection chips keyed into certain games, or do they work on any Sega C-2 game?

Thanks guys!
 
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