MAME Path Handling¶
MAME has a specific order it uses when checking for user files such as ROM sets and cheat files.
Order of Path Loading¶
Let’s use an example of the cheat file for AfterBurner 2 for Sega Genesis/MegaDrive (aburner2 in the megadrive softlist), and your cheatpath is set to “cheat” (as per the default) – this is how MAME will search for that cheat file:
aburner2.xmlNotice that it checks for a .ZIP file first before a .7Z file.
<arbitrary path>/aburner2.xmlIt will look for the first (if any)
aburner2.xmlfile it can find inside that zip, no matter what the path is.
megadriv/aburner2.xmlNow it is specifically looking for the file and folder combination, but inside the cheat.zip file.
<arbitrary path>/megadriv/aburner2.xmlLike before, except looking for the first (if any)
megadrivfolder inside the zip.
aburner2.xmlNow we start checking 7ZIP files.
<arbitrary path>/megadriv/aburner2.xmlSimilar to zip, except now 7ZIP files.
[todo: ROM set loading is slightly more complicated, adding CRC. Get that documented in the next day or two.]