The problem arises because most modern MAME builds default to for accuracy. If dl1425.bin is absent, the emulator halts. The "fix" is a combination of:
mame64 sf2 -verbose
This reveals a core tension: The original arcade hardware is no longer manufactured. QSound Labs no longer supports the chip. The only way to experience Dynasty Wars (hypothetically) on a modern Steam Deck or RetroPie is through this exact chain: dl1425bin (the data) + qsoundhle (the translator) + fix (the repair). The community +fix acts as a de facto maintenance contract that the original rights holder declined to provide.