Most legitimate indexes go offline within weeks. If you find one today, download what you need immediately. However, be aware that many "index" pages that appear on Google are actually honeypots or outdated caches.
A complete index should include CHDs for games that originally used hard drives or CD-ROMs, though these significantly increase the total storage size. 2. Set Organization (Merged vs. Non-Merged) index of mame roms
This is the section most authors ignore, but you need to read it. Most legitimate indexes go offline within weeks
./mame -listfull | grep -i "working" > working_roms.txt A complete index should include CHDs for games
: The parent game is in one file, and each clone is in its own file. Clones in this set cannot run without the parent file.
MAME updates constantly (currently version .270+). A ROM that worked in MAME version .100 might be broken in version .270 because the emulation accuracy changed. A good index will often be labeled by version (e.g., MAME 0.236 ROMs ).