Zelda no Densetsu (FDS) When you push blocks to open locked doors, this patch plays the secret chime sfx instead of the normal door sound. FDS prototype and other versions already use secret chime also. Please be sure your disk rom is: fds_header - zelda_densetsu_door_chime.ips 131,016 bytes -or- no_fds_header - zelda_densetsu_door_chime.ips 131,000 bytes