{|{{Prettytable|width: 700px; font-size: 2em;}}
|''I/O''||''Binary''||''Port''||''Read''||''Write''
|-
|#7FXX||%0xxxxxxx xxxxxxxx||[[Gate Array]]|| ||Write
|-
|#BCXX||%x0xxxx00 xxxxxxxx||6845 [[CRTC]] Address-Register|| - ||Write
|-
|#BDXX||%x0xxxx01 xxxxxxxx||6845 [[CRTC]] Data-Register|| - ||Write
|-
|#BEXX||%x0xxxx10 xxxxxxxx||6845 [[CRTC]] Status-Register||Read|| -
|-
|#BFXX||%x0xxxx11 xxxxxxxx||6845 [[CRTC]] Video-Address-Register||Read|| -
|-
|#DFXX||%xx0xxxxx xxxxxxxx||select ROM|| - ||Write
|-
|#EFXX||%xxx0xxxx xxxxxxxx||Printer Port|| - ||Write
|-
|#F4XX||%xxxx0x00 xxxxxxxx||8255 PIO Port A||Read||Write
|-
|#F5XX||%xxxx0x01 xxxxxxxx||8255 PIO Port B||Read|| -
|-
|#F6XX||%xxxx0x10 xxxxxxxx||8255 PIO Port C|| - ||Write
|-
|#F7XX||%xxxx0x11 xxxxxxxx||8255 PIO Control-Register|| - ||Write
|-
|#F8B0||?||Vidi-CPC Video-Digitiser||?||?
|-
|#F8B1||?||Vidi-CPC Video-Digitiser||?||?
|-
|#F8DC - #F8DD||?||CPCI Serial Interface||Read||Write
|-
|#F8E0||?||Z80 STI Indirect Data Register||Read||Write
|-
|#F8E1||?||Z80 STI Gen. Purpose I/O Interrupt||Read||Write
|-
|#F8E8||?||Z80 STI Pointer Vector Register||Read||Write
|-
|#F8E8||?||Music Machine|| - ||Write
|-
|#F8EC||?||Z80 STI USART Control Register||Read||Write
|-
|#F8EC||?||Music Machine|| - ||Write
|-
|#F8ED||?||Z80 STI Receiver Status Register||Read||Write
|-
|#F8EE||?||Z80 STI Transmitter Status Register||Read||Write
|-
|#F8EF||?||Z80 STI USART Data Register||Read||Write
|-
|#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
|-
|#F8FF||%1111100x 111xxxxx||CPCISA control port|| - ||Write
|-
|#F9B0||?||Vidi-CPC Video-Digitiser||?||?
|-
|#F9FC - #F9FE||?||Otten & Fecht 1 MB RAM-Disc||?||?
|-
|#FA7E||%xxxxxx0x0 0xxxxxxx||Floppy Motor Control|| - ||Write
|-
|#FADC||?||Z80-SIO / DART port A Data Register||Read||Write
|-
|#FADD||?||Z80-SIO / DART port A Control Reg.||Read||Write
|-
|#FADE||?||Z80-SIO / DART port B Data Register||Read||Write
|-
|#FADF||?||Z80-SIO / DART port B Control Reg.||Read||Write
|-
|#FB7E||%xxxxxx0x1 0xxxxxx0||765 FDC (internal) Status Register||Read|| -
|-
|#FB7F||%xxxxxx0x1 0xxxxxx1||765 FDC (internal) Data Register||Read||Write
|-
|#FBDC||?||8253 Timer counter 0||Read||Write
|-
|#FBDD||?||8253 Timer counter 1||Read||Write
|-
|#FBDE||?||8253 Timer counter 2||Read||Write
|-
|#FBDF||?||8253 Timer Modus Select|| - ||Write
|-
|#FBE0||?||Hard Disc Data Port||Read||Write
|-
|#FBE1||?||Hard Disc Status, Reset||Read||Write
|-
|#FBE2||?||Hard Disc Select, Configuration||Read||Write
|-
|#FBE3||?||Hard Disc DMA, Interrupt||Read||Write
|-
|#FBE4||?||Hard Disc Reset||Read||Write
|-
|#FBE0 - #FBE3||?||dk'tronics RTC.||?||?
|-
|&FBE8||?||dk'tronics RTC.||?||?
|-
|#FBEE||?||SSA1 dk'tronics Speech-Module||Read||Write
|-
|#FBF0 - #FBFF||?||Otten & Fecht 1 MB RAM-Disc||?||?
|-
|#FBF6||?||765 FDC (Vortex,ext) Status Register||Read|| -
|-
|#FBF7||?||765 FDC (Vortex,ext) Data Register||Read||Write
|-
|#FC00 - #FDFF||%1111110x xxxxxxxx||CPCISA 16bits mode high byte latch||Read||Write
|-
|#FD00 - #FD3F||?||SYMBiFACE II||Read||Write
|-
|#FE00 - #FFFF||%1111111x xxxxxxxx||CPCISA I/O access (low byte)||Read||Write
|-
|#FEE8||?||Multiface II||?||?
|-
|#FEEA||?||Multiface II||?||?
|-
|#FFXX||?||CPC Booster (XX=#00..#28 are used now)||Read||Write
|-
|}