For Momotarou Dentetsu Happy on bsnes cores:
	Copy "data.rom" to your "System" directory (where your BIOS are)
	Copy "Momotarou Dentetsu Happy (Japan).srm" (rename to your game's ROM filename if it's different) to your "Save-files" directory

Note:
This "data.rom" is not compatible with other SPC7110 games, like Super Power League 4 or Tengai Makyou Zero.