|#F7XX||%xxxx0x11 xxxxxxxx||[[8255]] PIO Control-Register|| - ||Write
|-
|#F880 - #F8AFF88F||%1111 1000 1xxx 1000 xxxx||[[ACMECTC-AY]] WIP DataExpansion (CTC #F880-F883, YMZ #F884 and #F888)|| - || Write
|-
|#F8B0||?||[[VIDI digitizer|Vidi-CPC Video-Digitiser]], CRTC Index||?||Write