Wow, getting your hands on both games for this system must've taken some effort. As it happens, since you have access to the hardware, you can help with this quite a bit. I'm interested in looking at this system from a hardware perspective first. When you're looking at a system from a software perspective, the first thing you want is a memory map. When you're looking at a system from a hardware perspective, the first thing you want is a schematic. If you don't have a schematic but you do have the hardware, you can figure out a lot of information with a few datasheets and many hours of tracing and probing. If you don't have either though, some really good pictures can still tell you a lot. I've seen very few pictures of the H1 PCB, and none of the video board, and the ASCII art in the MAME driver doesn't really cut it. If you could take one of your H1 systems, separate each board from the stack, and take some really clear high resolution pictures of each pcb on both sides, where the IC labels are readable and the board traces are as clear as possible, that would help a lot. Taking a single picture for the entire board, then four closer pictures of the board, one for each quadrant (with some overlap), is usually a good idea.
It sounds simple, but you'd be surprised how often questions come up when trying to emulate a system which you can answer just by looking at the physical board. These pictures by themselves won't radically improve emulation, but they at least help to establish some definitive facts about the system. Documentation can be wrong, research can be flawed, and sources can be incorrect, but pictures of the real system are indisputable fact, and we need as much of that as we can get.
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Re: Undumped earlier Sega Hang-On revision
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