listroms
Option Category #
# FRONTEND COMMANDS
#
Description This option will generate a complete list of all the roms required by a system giving the CRC, ROM name, size and SHA1.

If you add a system name after the -listroms it will only tell you the information for that system. There is a wildcard option that will let you generate a list containing systems of certain names e.g. -listroms puck* will generate a list of systems starting with puck. If you want to direct the list to a text file then use this command mame64 -listroms >listroms.txt. Again you can use this on a specific system by adding the system name after the -listroms.
Full Command -listroms <system|wildcard>
Alt. Command none
Reverse Command none
Example mame64 -listroms
mame.ini Command none
Command Default none
Argument Format <system|wildcard>