-verifyroms . The game name is optional and only used if you don't want to generate a list for all of MAME's games. The wildcard will let you verify a list of roms of certain games e.g. -verifyroms puck* will verify a list of games starting with puck. The example will verify the complete set of roms used by MAME and redirect it to a text file called verifylist.txt. You can open the text file in notepad.
-romident . File is the name of the file you need to identify. MAME will give you an error of 0-9 depending on whether it knows what the rom is. Errors are...
0: means all files were identified 7: means all files were identified except for 1 or more "non-ROM" files 8: means some files were identified 9: means no files were identified