#F8E1 : Z80 STI Gen. Purpose I/O Interrupt write / read
#F8E8 : Z80 STI Pointer Vector Register write / read
#F8E8 : Music Machine write
#F8EC : Z80 STI USART Control Register write / read
#F8EC : Music Machine write
#F8ED : Z80 STI Receiver Status Register write / read
#F8ED : Music Machine write
#F8EE : Z80 STI Transmitter Status Register write / read
#F8EE : Music Machine read
#F8EF : Z80 STI USART Data Register write / read
#F8EF : Music Machine read
#F8E2-#F8E4 : Dobbertin Eprommer 4003 ? / ?
#F8F0 : Music Machine write
#F8F2 : Dobbertin Eprommer 4003 ? / ?
#F8F4 : Music Machine read
#F8F8 : Music Machine write
#F9B0 : Vidi-CPC Video-Digitiser ? / ?
#F9FC-#F9FE : Otten & Fecht 1 MB RAM-Disc ? / ?