> > 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?
|