Originally posted by: Lugia2009
Originally posted by: Lincoln
(Sorry, I didn't put the games in the right order, that was the Naruto cart you looked at. I fixed it.)
So it just needs the same pinout, I thought it had to be the exact same chip. Okay, that's good.
But what about the other games, king of fighters only has 2 RAM chips, where would the ROM be stored on that game?
I guess the KoF rom would have to be under the epoxy, by process of elimination. If I'm reading datasheets right,
LC3664BML-10 is 8 KByte ram and
TC55328J-25 is 32 KByte ram. I would guess the first is chr-ram, since I've never seen more than 8K for chr-ram. I can't imagine 32K is enough space for the whole rom. so the second chip is probably wram. That leaves the space under the epoxy. Assuming all that, the KoF would be a difficult donor. Not that it can't be done I guess, but that's over my head.
for samurai spirits I think the smaller pcb with the epoxy blob is the ROM . the blank chip on the front looks like it's another RAM chip. You would probably have to trace out the board to determine the pinout from that.
and while I'm thinking through all of this, it should be possible to use 2x 27C080 eproms in place of the flash chip for the rom. I think you would use the highest address line to enable one chip or the othe at a time. I've never done that but it's a thought.
if you haven't done so already I would recommend asking over at nesdev. those guys are wizards and they should have better info than some bum repro maker (me).
