Arcade Emulation Help, OnionOS

I just changed from MinUI to OnionOS on my Miyoo Mini+ to try more forms of emulation such as Arcade. I specifically want to play Bosconian. I got it running via the core “MAME 2003-Plus” using two different ROMsets, “bosco” and “boscomd” from the Archive.org “MAME 2003-Plus Reference Full Non-Merged ROMsets”...