In order to provide support for Star Rider for my Dexter project, I've been spending a lot of effort reverse engineering Star Rider's PIF board (the board that controls the laserdisc player), including disassembling almost all of the ROM program (at least, I think it's almost all hehe). Not wanting to lose/forget what I've learned, I've put it all up on a wiki page for now. Hopefully, it will help to someday fully understand this fascinatingly complex game's hardware