> Looks like pretty impressive use of the DECO hardware! Glad to see it saved, I know > it's been a source of frustration to MAME for quite some time. > > There's really not much left of known DECO cassette games that are completely > undumped, is there? Which is truly fantastic given how vulnerable to deterioration > the media is they're recorded on.
there are probably quite a lot of revisions still undumped, it seemed Data East liked trying out ideas on the platform, modifying the games over time etc. There are videos from some games that certainly seem to show undumped versions (eg Manhattan, the videos show colour changes but the set we have doesn't touch any registers at all during the times they're seen so the videos must be of a newer version, maybe the US release, maybe a newer Japan one)
also since I just decrypted a Treasure Island set which turned out to use a region code nothing else in the driver used so far there are probably a bunch more sets of that unknown region too.
beyond that, there are still a number of gaps, and none of the Japanese Mahjong games that had their own numbering system are dumped at all.
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