I'd really like to get my hands on the H1 system, as I'm intrigued by it too. Unfortunately it doesn't come up for sale very often. I've seen both Cool Riders and Aqua Stage go on ebay a few years back, but not for prices I'd be willing to pay. I had a line on a faulty one that I would've happily paid for, as even non-working or partially working systems are still very useful for reverse engineering, but the owner changed his mind in the end and decided not to sell. I hope to get this system at some point, as I'd definitely like to document the hardware. From a technical point of view it'd be a very interesting system, being the last of the "Super Scalar" line and created around 5 years later than the System 32.
I've focused exclusively on Sega systems (hey, I've got to draw the line somewhere!), but here's the "short list" of unique Sega arcade hardware I currently own:
-Dottori Kun
-Zaxxon
-System 2
-System 16B
-System 18
-System 24 (ROM/Disk)
-System 32
-System Multi 32
-System C
-System E
-Mega Play
-STV
-X Board
-Y Board
-Hang On
-Enduro Racer
-Model 1
-Model 2A
-Model 2B
-Model 2C
-Model 3 Step 2
-Naomi (Cart/DIMM/GD-ROM)
-Naomi 2
I have duplicates for some of this hardware, but those are the distinct systems I currently own.
Here's the list of remaining systems I definitely plan to acquire if they appear at a good price (and I have money):
-OutRun
-System 16A
-H1
There's a spattering of other notable but less interesting hardware I'd get if it's cheap, but these are the main ones left I'd like to acquire for their technical merit.
I'm probably going to start on either the System 16 or the System 32. The System 16 is closer to home, since it's 68000/Z80 based, so I can code for it in my sleep. I played around with the System 32 a decade or so ago though, when I broke the copy protection for SegaSonic Arcade. You mentioned a clear bug in Golden Axe II, and I have that game for the system. I might investigate that one first, and start getting a feel for the graphics hardware. Did an assembler ever turn up for the NEC V60? I didn't even have a datasheet for it back then. There's plenty of V60 docs now (although annoyingly still no V70 pinout), but I don't have any development tools in my archive, and if there's one out there somewhere my Google-fu is currently failing me. Are you aware of something lurking out there that can spit out V60 machine code? If not I might have to hack together a quick and dirty minimal assembler first.
I've also got a couple of dead FD1149's (System32 protection device) I want to get decapped too, as I'm really curious what's driving that. I'll probably have a crack at it myself. I've got some 70% nitric and 98% sulphuric acid in the garage (don't we all?), so I might as well. If it all goes horribly sideways I can send the "backup" device to Caps0ff. Hopefully we can identify a way to externally dump them, assuming there's some kind of data to dump that is. I'd also like to figure out how to externally re-program the FD1089/FD1094 modules. They must have been programmable externally by Sega, so we should be able to program them too. Anyway, I'm getting ahead of myself, one project at a time.
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