! Address !! Read !! Write
|-
| FADC 0xFADC || Channel A data || Channel A data
|-
| FADD 0xFADD || Channel A control || Channel A control
|-
| FADE 0xFADE || Channel B data || Channel B data
|-
| FADF 0xFADF || Channel B control || Channel B control
|-
| FBDC 0xFBDC || 8253 Load counter 0 || 8253 Read counter 0
|-
| FBDD 0xFBDD || 8253 Load counter 1 || 8253 Read counter 1
|-
| FBDE 0xFBDE || 8253 Load counter 2 || 8253 Read counter 2
|-
| FBDF 0xFBDF || Write mode word || -
|}