Por qué no pruebas esto?

a mi me funcina



### dreamcast.ini (mamewah v1.60) ###

emulator_title Sega Dreamcast

### List Generation Settings ###
rom_path c:\emuladores\consolas\sega\dreamcast\roms
rom_extension cdi
dat_file
nms_file c:\emuladores\consolas\sega\dreamcast\chankast.nms
catver_ini_file
list_generation_method rom_folder

### Execution Settings ###
emulator_executable c:\emuladores\consolas\sega\dreamcast\chankastwrapper.exe
commandline_format "[rompath]\[name].[romext]"{nodosbox}{safelaunch}
alt_commandline_format_1 [name]
alt_commandline_format_2 [name]
game_specific_config_path