Hogan's Alley - PPU question???

[bheineck]

I just purchased a Dr. Mario VS Unisystem with the intent to turn it into a Hogan's Alley game. To my surprise I found the 6 Hogan's Alley ROMs on the cabinet floor, but no PPU. Is the PPU unique to the game or are there other games that use that PPU? I will try to purchase the other game in that case instead of having two sets of Hogans Alley ROMs. Any help appreciated.

On a side note is it possible to get replacement PPUs?

[DaveyPocket]

No replacement PPU's exist. The only PPU's that exist are what's left in the world. There are several other games that use a PPU similar to Hogan's Alley. John, the creator of this forum and his website, has a list comparing the Vs. games and PPU that will work (http://www.johnsarcade.com/nintendo_vs_ppu_info.php)
You can use the PPU on the Dr. Mario board, but the colors won't work right.