The designation "DL-1425" refers to a specific ROM revision set. In the wild world of arcade restoration, operators would often swap chips to upgrade games, or conversely, use mismatched parts to cobble together working machines. A collector might have a cabinet labeled "Dragon's Lair," but the chips inside could be a Frankenstein mix of different eras.
: Starting with MAME 0.186 , the file dl-1425.bin replaced the older, obsolete qsound.bin . If you are using an older ROM set with a newer version of MAME, you will likely encounter a missing file error. mame dl-1425.bin
: Without this file, games using QSound will either crash or run without audio. The designation "DL-1425" refers to a specific ROM