Currently the Stern Nine Ball has a whole list of issues but slowly they are getting found and fixed. Will probably have 30-50 hours of labor in the electrical and mechanical repair and restoration. Playfield will likely be sent out for professional restoration and clear coat. The paint is so dry and flaky and there are areas of wear that would rapidly increase if played heavily until it is protected under automotive clearcoat.
That emulator only covers the electronics and not the physical playfield. Is there an open source pinball simulator which can be merged with it? Microsoft included a pinball game with Windows 95 and there was the Pinball Construction Set before that.
Visual Pinball is a freeware and source available video game engine for pinball tables and similar games such as pachinko machines. The software is composed of an editor and the simulator part itself. It runs on Microsoft Windows. The program is also able to operate with Visual PinMAME, an emulator for ROM images from real pinball machines. A huge variety of user-created Visual Pinball tables are available on the internet. Players can choose between faithful recreations of existing pinball machi...
According to this chart =Bally/Stern#Stern, many of the Stern games use the same circuit boards. What is critical when trying to figure out what the code does is the schematic showing what switches, bulbs and solenoids are connected.