In , a reverse engineer known as trap15 successfully dumped the internal ROM using custom-built "trojan" software. This allowed David "Haze" Haywood and other developers to implement true sound emulation in MAME starting with version 0.154 . Common Games Requiring nmk004.bin

: Most MAME sets require nmk004.bin to be present in either the specific game's ZIP file or a parent/device ROM set (usually named nmk004.zip ).