Re: Bubbles. So, Fire(WS) has them, Turtle Bridge does not. And Fire Attack has the very faint ones you speak of (no need to simulate those). This nicely coincides with when Nintendo switched from SM5A to SM510. In other words, they redesigned the LCD manufacturing along with changing the design to another MCU. https://github.com/mamedev/mame/blob/master/src/mame/drivers/hh_sm510.cpp#L61
