> It's a different game technically but I guess people call it a patch since it's 90% > the same. It would be like someone calling a Black Label Cave game a patch though. It > happens to be on 1 rom chip, but the chip holds a GB of data. So it was just this > tiny 2 inch daughter card with 1 flash rom on it that you swapped out to upgrade a > board. Don't know about an OS.
There's.... Arcana Heart version 1.5 upgrade (small plug in board replacement) Arcana Heart Full (title says its by Atrativa or something like that)