|-
|#F880-#F88F||%1111 1000 1000 xxxx||[[CTC-AY]] Expansion (CTC #F880-F883, YMZ Right #F884 and YMZ Left #F888)|| - || Write
|-
|#F890-#F8AF||%1111 1000 10xx xxxx||[[ACME]] WIP Expansion|| - || Write
|-
|#F8B0||?||[[VIDI digitizer|Vidi-CPC Video-Digitiser]], CRTC Index||?||Write
|-
|#F980 - #F98F||%1111 1001 1000 xxxx||[[CTC-AY]] (YMZ Right #F984 and YMZ Left #F988)|| - || Write
|-
|#F990 - #F9AF||%1111 1001 10xx xxxx||[[ACME]] WIP Expansion|| - || Write
|-
|#F9B0||?||[[VIDI digitizer|Vidi-CPC Video-Digitiser]], Config (W) and Capture Data (R)||Read||Write