> > It looks like an early type 3 JVS IO board.
>
> on the photo may be seen Sega 315-6414 chip, which is main (and the only big one)
> component of Sega "Type 3" JVS IO, probably some MCU.
> why there is additional Xilinx FPGA + Hitachi SH4 CPU + RAM + SRAM + Flash ROM ? I'm
> not sure, probably for some additional functions.
> so, it's more like advanced type 3 IO.
>
> > Andy apparently had one similiar but not identical.
> > http://triplemoonstar.brinkster.net/theshed/default.asp?stockid=2602
>
> they are similar at hardware level but totally different in software and functional.
> 837-14633 is (probably) JVS IO board
> 837-14438 is hopper/payout/etc cash related controller for later Cash Cube games, but
> it is *not* JVS, Andy's site incorrect in this part.
>
> it is hard to find correct information in the net about not common games or hardware.
> as for Donkey Kong Banana Kingdom game - literally everywhere in the net said it uses
> Triforce hardware, but as we see, in reality, it uses "Capcom medal" hardware
> (alien.cpp in MAME)
The extra SH4 is indeed intruiging. It makes me wonder if it could be a developer version board or maybe a diagnostic board?
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