> That's the thing though, the use of an FPGA in any given circuit is unique to that
> circuit.
>
> The bitstream that configures its macrocells is ultimately what determines how it
> functions in a given application. FPGAs are only very rarely emulated on a bitstream
> level, though, they're typically black-boxed based on what the particular
> application-specific functionality does.
>
> The end result of this is that knowing how it works in Sega's particular application
> doesn't help figure out how it works in, say, Atari's application of it. The
> underlying functionality could be, and most likely is, entirely different.
Thanks. I don't even know how I feel about this situation. It may as well be a "rare case" where the FPGA will have to be emulated on a bitstream (seeing how gun/analog inputs are involved). At least I could see why hooking proper inputs for Area 51: Site 4 proved difficult.
I guess I'm correct on how this specific A42MX09 is a funky chip. This may as well be on hold until a proper plan of attack is devised (probably years from now).
-.-
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