> Fine, let me try to find a filter board from the net... > > Another, Guru, could you take some detailed pictures of (Or scan) step 2.x boards, as > I'm studying it? > > And 2 more questions: > What are those small blue parts in row, on a filter board? > and, > do all model-3 games need security/protection chips to boot up? The very common "Scud > Race", for example?
Check the MAME driver for details, but Scud Race is generally not protected.
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