![]() ![]() ![]() This is how I got that check defeated: (For Asian Mega-CD Bios ROM: EPR-14563H 12/28-1991 1.00) Still, it doesn't solve the problem of the Mega-CD itself having a Mega Drive console region check on it's own BIOS ROM. So what I do to make PAL and US games work on my asian Mega CD is manually paste the japanese security program at the correct offset (0x00200) of the first sector and pad the size difference with 68000 NOP instructions (4E 71). security program: 1412 bytes -> "PRODUCED BY OR UNDER LICENSE FROM SEGA ENTERPRISES, LTD" Japanese security program: 342 Bytes -> "PRODUCED BY OR UNDER LICENCE FROM KABUSHIKI KAISHA SEGA ENTERPRISES"Įuropean security program: 1390 bytes -> "PRODUCED BY OR UNDER LICENSE FROM SEGA ENTERPRISES, LTD" I found out that it *tries* to relocate the boot loader of the game and injects the proper "security program" for the target region.Īlso I found out that the three regions have respectively: Since 2004/2005 (I don't remember well) I've been buying US and EU games and re-burning them on CDRs.īecause I don't like Datel's CDX and other similar stuff occupying my Mega Drive cartridge slot, I started to research how actually the SCDCONV program works. While we're at it (Dreamcast region modchip thread) I took my old MEGA-CD out of storage and started to thinker with it. ![]()
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