|-
|#FADF||?||[[Amstrad Serial Interface]] Z80-SIO / DART port B Control Reg.||Read||Write
|-
|#FADF||?||[[Cirkit serial interface]] 8251 UART data register||Read||Write
|-
|#FAE6||?||Port A - [[IDE8255]]||?||?
|-
|#FBDF||?||[[Amstrad Serial Interface]] 8253 Timer Modus Select|| - ||Write
|-
|#FBDF||?||[[Cirkit serial Interface]] 8251 UART status/control register||Read||Write
|-
|#FBxx+0||?||CPCI [[Real Time Clock]] Index (DIY)||-||Write