|#F5XX||%xxxx0x01 xxxxxxxx||[[8255]] PIO Port B (Vsync,PrnBusy,Tape,etc.)||Read|| -
|-
|#F6XX||%xxxx0x10 xxxxxxxx||[[8255]] PIO Port C (KeybRow,Tape,[[PSG]] Control)|| - ||Write
|-
|#F7XX||%xxxx0x11 xxxxxxxx||[[8255]] PIO Control-Register|| - ||Write