|
|-
| ADC START
| &F8F8
| Reading or writing to this port will start analogue to digital conversion
|-
| ADC READ
| &F8F4(Read only)
| The contents of the A-to-D can be read via this port. Note that the A-to-D must have been startet at least 20uS before this port can be read
|-
| DAC WRITE
| &F8F0(Write only)
| Data can written to the DAC via this port
|-
| INTERUPT SEL
| &F8E8(Write only)
| INTERUPT SEL
| Writing 01 to this port disables internal Amstrad interrupts and replaces the IRQ signal from ACIA. Writing 00 restores normality.
|-
| &F8EC(Write only)| ACIA StatusControl| See [[6850 ACIA chip]] for details|-| &F8ED(Write only)| ACIA Data write| See [[6850 ACIA chip]] for details|-
| &F8EE(Read only)
| Se Motorola datasheetACIA Status| See [[6850 ACIA chip]] for details
|-
| ACIA Data read
| &F8EF(Read only)
| Se Motorola datasheetACIA Data read| See [[6850 ACIA chip]] for details
|-
| ACIA Control| &F8ECF8F0(Write only)| Se Motorola datasheetDAC WRITE| Data can written to the DAC via this port
|-
| ACIA Data write| &F8EDF8F4 (Write Read only)| Se Motorola datasheetADC READ| The contents of the A-to-D can be read via this port. Note that the A-to-D must have been startet at least 20uS before this port can be read|-| &F8F8| ADC START| Reading or writing to this port will start analogue to digital conversion
|}