I have changed this in mame.ini.-
#
# CORE SWITCHRES OPTIONS
#
modeline 1
monitor CUSTOM
orientation horizontal
connector auto
interlace 1
doublescan 1
cleanstretch 0
changeres 1
powerstrip 0
lock_system_modes 1
lock_unsupported_modes 1
refresh_dont_care 0
dotclock_min 0
sync_refresh_tolerance 2.0
frame_delay 0
lcd_range auto
crt_range0 15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
crt_range1 auto
crt_range2 auto
crt_range3 auto
crt_range4 auto
crt_range5 auto
crt_range6 auto
crt_range7 auto
crt_range8 auto
crt_range9 auto
---------------------------
But when i launch games, switchres: could not find a video mode that meets your specs
and all games at same resolution...