Emulator support is as follows:
*Dobbertin HD20 with Dobbertin SmartWatch is emulated by MAME
*Symbiface II or X-Mass IDE/PATA is emulated by ACE, Caprice Forever, MAME, WinAPE, WinCPC, Arnold, Virtual CPC, MAME, ACE, Caprice Forever
*Albireo is emulated by ACE, Caprice Forever
*M4 Board is emulated by CPCemu