Charles MacDonald recently did some nice researches to the not too much hatred Night Gal HW. I’ve taken a look to these docs and, after that I’ve figured out that there was an undocumented protection / open bus thing (!) I’ve got Royal Queen to work without the major graphic artifacts, unlike all the other games in the HW.



I just need to figure out why inputs doesn’t work, I guess that it should be something simple & different. Then I’ll move on to the other games on this HW …

EDIT1: fixed inputs, just a stupid mistake from my part. ^^U

EDIT2: Figured out that Night Gal, Royal Night and Night Bunny doesn’t have any real difference with Royal Queen, they now works them all:








Source:mamedev.emulab.it/kale/