Use a ROM manager like or RomVault . These tools read a "MAME 0.235 XML dat file" (available from the MAME dev site) and verify every ZIP. They will tell you exactly which ROMs are missing or corrupt.
: Like most MAME versions, ROMs do not need to be unzipped. Simply place the files into your BIOS Files : Ensure your set includes essential BIOS files (like neogeo.zip ), as many games will not launch without them. Where to Find It mame 0.235 rom set
When downloading a "0.235 full set," you will encounter three main formats. Your choice depends on your storage space and how you plan to use the emulator. Description Understanding the MAME 0