That’s quite a bit dealing with the non coinop hardware.The midi add-on pcbs look to be off to the races soon after a few of the desktop computer pcb cards have been recently supported in MAME.
Will musical equipment being supported such as keyboards and drums/percussion be part of the items covered in the future? If they already are such as the Casio Rz-1 drum sample unit and I missed that earlier, my bad.
I won’t expect any Synclavier stuff being supported anytime soon.