Just made myself a copy of Mario Unlimited for my first repro, and it works great. I am having a heck of a time with SMB2j though. My donor is Image Fight(Tsrom-07) I am using loopys mmc3 hack. I wired up the 27c010 for the CHR according to the NES EPROM conversion thread on here. I used a 27c512 for the PRG with no rewiring. Do I need to use a 32 pin EPROM for the PRG? I did this exact same thing to SMB3 and same result........solid pink screen : - (. I thought for sure that 27c512 chips were pin compatible with mask roms. Any help would be greatly appreciated.