![]() 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
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