> > It has some unique ROMs, but it's the same encrypted CPU and the same copyright. I
> > believe it's a Sega board with an additional Bally sticker applied as a
> distributor.
>
> You've hit it. The "N.E." on the sticker gives it away (Bally Northeast). They named
> their distribution centers by location. We had a Bally Midwest center here in GR MI
> up until 1990 or so...
what's interesting is that the graphic roms have the official sega part numbers, but the program roms simply have a date.
could be that they were trying out new code modifications for the US release, or Bally had asked for their own, out of line with Sega's usual numbering scheme. could easily be a US market proto (so after the game was finished and sold in Japan, but before refinements for export)
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