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Thanks a lot Apocalypse for these conversions. I was looking to play Zunzunkyou no Yabou on my C2 board and glad to enjoy it now on real hardware. :)

Hi guys, I've already done some Mega System 1 conversions in the past. The BPROM is not the only thing to swap, there is a protection chip on every rom board labeled M50747. It is noted "Encryption (key #)" on the MAME source code. Fortunately there are only 3 different keys (2 are truly...

Hi guys, Great to see a forum talking without restrictions about arcade technics ! Fell into arcade repairs and stuff some Years ago but unfortunately not that much time to dig into it lately. Hope to keep a bit connected with the great international community.