|-
|#FCE7||?||Port C - [[IDE8255]]||Read||Write
|-
|#FD08 - #FD0F||%11111101 00001xxx||[[X-Mass|X-MASS]]||Read||Write
|-
|#FD00 - #FD3F||%11111101 00xxxxxx||[[Programming:SYMBiFACE_II|SYMBiFACE II]]||Read||Write
|-
|#FD08 - #FD0F||%11111101 00001xxx||[[X-Mass|X-MASS]]||Read||Write
|-
|#FD80 - #FD87||%11111101 10000xxx||CPC-CPLink - FIFO Interface card for Co-processors, incl. Raspberry Pi ||Read||Write