> Weren't these games heavily protected? I remember reading somewhere they had MCUs > that have not yet been figured out.
Gals Panic 4 runs on the Super Kaneko Nova system, which appears to be unprotected except for some PLD-based region locking. A lot of earlier Kaneko games make use of various NEC µPD78324 MCUs with internal mask programs. (The µPD78324 belongs to the 78K/III family, which MAME currently doesn't even have an emulation core for.) Of these MCUs, "Toybox" and "Calc-3" are currently simulated in MAME, while "Pisces," which is unique to Gals Panic 2, is not.
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