ok, think thats rigth (or?). where can i find now the mame.xml?
pi@retropie:/opt/retropie/emulators/mame4all $ ./mame -listxml
M.A.M.E. v0.37 BETA 5 (Jul 20 2016) - Multiple Arcade Machine Emulator
Copyright (C) 1997-2013 by Nicola Salmoria and the MAME Team
MAME is an emulator: it reproduces, more or less faithfully, the behaviour of
several arcade machines. But hardware is useless without software, so an image
of the ROMs which run on that hardware is required. Such ROMs, like any other
commercial software, are copyrighted material and it is therefore illegal to
use them if you don't own the original arcade machine. Needless to say, ROMs
are not distributed together with MAME. Distribution of MAME together with ROM
images is a violation of copyright law and should be promptly reported to the
authors so that appropriate legal action can be taken.
Usage: MAME gamename [options]
MAME -list for a brief list of supported games
MAME -listfull for a full list of supported games
Other lists:
-listinfo -listdetails -gamelistheader -gamelistfooter -gamelist
-listgames -listclones -listsamdir -listcrc -listdupcrc
-listromsize -listcpu -wrongorientation -wrongfps -noclones
Options
-listroms -listsamples -verifyroms -verifysets
-vset -verifysamples -vsam -romident -isknown -sourcefile
Pi Options
-nodrz80_snd Switch off DrZ80 core for sound (on by default)
-drz80 Switch on DrZ80 core (may cause instability)
-nocyclone Switch off Cyclone core
-nosound Switch off sound
pi@retropie:/opt/retropie/emulators/mame4all $