As of MAME 0.250 and newer, the core team has been aggressively rewriting device drivers to be more modular. There is a long-term goal to move away from raw .bin sound CPU files and toward "device ROMs" that are verified against redump.org standards.
MAME allows multiple ROM paths. In mame.ini , add the folder containing your parent ROMs. You can also simply copy the sp5001-a.bin file directly from the parent ZIP into the clone's ZIP. (Note: This increases file size but works for non-merged scenarios). Sp5001-a.bin Mame
