italie |
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MAME owes italie many thank yous, hah
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Reged: 09/20/03
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Posts: 15246
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Loc: BoomTown
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Re: Strange graphics when switching on a specific arcade board
09/07/13 06:39 PM
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> But why doesn't this happen in MAME? In "Pac-Man" in MAME you do see these scrambled
> graphics and then that typical grid that so many old games display. But in "Street
> Fighter II", you never see this. Also, I'm still wondering why only one of my "Street
> Fighter II" revisions does it. I'm really curious if all boards with the same
> revision of the game behave the same or if there are differences too. (Like: Is it
> possible that one sf2ua board does this and another doesn't?)
Chips, resistors, capacitors, inductors, connectors, voltage levels, etc all have effect board timing. When engineers are designing something, its built to expected tolerances. As the boards get older, and the components start to "wear", you get different behavior that might be out of expected norms. In theory MAME could randomly screw up a bit here and there, or mess with its timings...but why would you want that behavior emulated?
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