


dat.ĭATs describe the ROM contents including filenames, file sizes, and checksums to verify contents are not incorrect or corrupt. Once you begin working with software tools to help validate, rebuild, or filter your ROM collection, you will quickly encounter the need for 'DAT' files, so named because they usually (but not always!) have the file extension. I've already got the Neo Geo BIOS zip file in the /retroarch/cores/system, and Retroarch is already pointing to that directory. I have games (in.ZIP format) in the /roms folder but when trying to play in Retroarch (Launch Archive using FB Alpha 2012 NeoGeo core) it says 'No items'. Hey all, I'm new here and need some help with Retroarch on a N3DS. Amiga, apple2, atari 2600, atari 5200, atari 7800, atarijaguar, atarilynx, comodore 64. Here is a rom collection that I use for retropie. If your goal is to have working ROMs, it is almost always simpler to download a full ROM collection that has already been verified to match the emulator you chose. Note: the process of verifying and rebuilding ROMs is complex and requires a substantial investment of time and effort in order to master. So how do you tell you have the right ROM if you aren't sure that your set matches the version required by the emulator you chose? What if you don't have the right version? Note: If you're reading this doc because you're starting an arcade emulation project, begin by reading Getting Started with Arcade Emulation.
