1/29/2024 0 Comments Sengoku 3 mame romIn 2000, SNK filed for bankruptcy, and most of its more prestigious properties, like Samurai Showdown and even The King of Fighters for a short stint, were passed on to various small developers like Eolith and Yuki Enterprises. Sengoku 3 was developed after the “demise” of SNK in the late 90s. The third, final, and very unexpected installment of the Sengoku series is superior to the first two games on a logarithmic scale. on the todo list.So after two interesting but ultimately sub-standard beat-em-ups, the Sengoku series finally delivers. Unlikely i'll get it fully working but even just manually switching a few games would be a start, sadly cpld dumps in the other thread are bad so would be coding something new from scratch. I'm thinking I might try and source some NOS (or more likely crap from china ) on ebay and have a crack at getting the cart working again. Will attempt to dump the atmega soon, probably secured but might get luckyĪlso in process of creating schematics, nearly finished prog board so far, cha board todo.Īlso found out today, i've still got a very old version of Quartus (Altera dev tool suite) with support for these old cpld's on an old XP box, think i've got programmer somewhere too. I think the atmega is storing/loading soft dip settings but not yet confirmed, need to go through the code in detail soon. Lots writes to 2ffff0, 25fff0, 2fffc0, presumably communicating with the cpld and atmega, also reading data from 200000-2fffff region so looks like it should have a P2 data rom somewhere in P1 or P2 roms which i've yet to locate. Got the menu code running in Mame, turns out it uses only S rom graphics, no C, uses two S roms with trivial bankswitch mechanism. PCB held up great, 24 remove/resolder cycles, just one pad started to lift on the very last chip. dumped a Mega Drive 112-in-1 multi-cart whilst I was at it But even then the physical removing, reprogramming, refitting of all the chips is still a major time consuming task!įull dump totals just under 3GB, zips to around 1.2GBĮagle-eyed will notice one extra chip there. I guess the dream would be if the whole process could be wrapped up in an application, just drag-drop the roms and it would spit out images for all the chips, roms, cplds, mcu, then reprogram the whole thing. (easy if required)Īll-in-all, possible but long way to go, well at least I wouldn't say anything there is impossible anyway possibly edit C rom data for menu, atm looks like menu just uses S for graphics, tbc.as above but for the Atmega8 mcu (will see if I can dump this at some point, although probably secured).Also factor in, there's the SNK chip functionality to do (the PCM, ZMC, NEO-273 etc.) not just the multi-cart specific stuff (logic definitions are available in the Mister FPGA project which might work ok for this) understanding of the cplds, dump (if not secured), reverse to logic, edit, reprogram -or- create new logic from scratch (I can't attempt the former as mine are dead).To have full control of the cart there's still. Ability to reflash the roms is just the first hurdle. In terms of wiping the slate clean, picking a list of games and reprogramming the whole cart as desired, that is still very far off. I guess something like changing a hack/clone of a game to the official (or different hack) should be possible too. for NAM I could quite easily erase the duplicated V and replace with the correct one. Click to expand.At this stage it's only really fixes, eg.
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